Somegwaza
- Ngqoko Village locals, Composer Not Specified, Dargie, Dave
- Authors: Ngqoko Village locals , Composer Not Specified , Dargie, Dave
- Date: 1985
- Subjects: Folk music , Field recordings , Africa, Sub-Saharan , Africa South Africa Ngqoko Village sa
- Language: isiXhosa
- Type: sound recordings , field recordings , sound recording-musical
- Identifier: http://hdl.handle.net/10962/319690 , vital:60210 , International Library of African Music, Rhodes University, Makhanda, South Africa , Dave Dargie Field Tapes, Rhodes University, Makhanda, South Africa , DD150A-02
- Description: Traditional Xhosa song for special occasions with clapping accompaniment
- Full Text: false
- Date Issued: 1985
- Authors: Ngqoko Village locals , Composer Not Specified , Dargie, Dave
- Date: 1985
- Subjects: Folk music , Field recordings , Africa, Sub-Saharan , Africa South Africa Ngqoko Village sa
- Language: isiXhosa
- Type: sound recordings , field recordings , sound recording-musical
- Identifier: http://hdl.handle.net/10962/319690 , vital:60210 , International Library of African Music, Rhodes University, Makhanda, South Africa , Dave Dargie Field Tapes, Rhodes University, Makhanda, South Africa , DD150A-02
- Description: Traditional Xhosa song for special occasions with clapping accompaniment
- Full Text: false
- Date Issued: 1985
Soze Umbone odlalisa ngam
- Group of young boys and girls, Composer not specified, Dargie, Dave
- Authors: Group of young boys and girls , Composer not specified , Dargie, Dave
- Date: 1985
- Subjects: Folk music , Field recordings , Africa, Sub-Saharan , Africa South Africa Lumko f-sa
- Language: Xhosa
- Type: sound recordings , field recordings , sound recording-musical
- Identifier: http://hdl.handle.net/10962/294967 , vital:57274 , International Library of African Music, Rhodes University, Makhanda, South Africa , Dave Dargie Field Tapes, Rhodes University, Makhanda, South Africa , DD090-12
- Description: Group of young people perform traditional Umtshotsho dance song with clapping accompaniment.
- Full Text: false
- Date Issued: 1985
- Authors: Group of young boys and girls , Composer not specified , Dargie, Dave
- Date: 1985
- Subjects: Folk music , Field recordings , Africa, Sub-Saharan , Africa South Africa Lumko f-sa
- Language: Xhosa
- Type: sound recordings , field recordings , sound recording-musical
- Identifier: http://hdl.handle.net/10962/294967 , vital:57274 , International Library of African Music, Rhodes University, Makhanda, South Africa , Dave Dargie Field Tapes, Rhodes University, Makhanda, South Africa , DD090-12
- Description: Group of young people perform traditional Umtshotsho dance song with clapping accompaniment.
- Full Text: false
- Date Issued: 1985
Spenser's Colin Clout : an introductory study
- Authors: Brown, Molly Anne
- Date: 1985
- Subjects: Spenser, Edmund, 1552?-1599 -- Criticism and interpretation , Faerie Queene , English poetry , Epic , Criticism , Interpretation , Clout, Colin (Fictitious character)
- Language: English
- Type: text , Thesis , Masters , MA
- Identifier: vital:2180 , http://hdl.handle.net/10962/d1001831
- Description: From introduction: In the sixth book of The Faerie Qveene, the reader is presented with a vision of the Graces and their attendants dancing on Mount Acidale to the piping of a simple shepherd. Spenser identifies this favoured musician as Colin Clout and then goes on to pose a seemingly inconsequential rhetorical question. "Who knowes not Colin Cloute?” he asks. The note of confident pride which can be discerned in the query clearly reveals Spenser's peculiar interest in one of his most intriguing creations. It is almost impossible to read a representative selection of Spenser's poetical works without noticing the hauntingly frequent appearances of his "Southerne shepheardes boye". Colin appears or is named in no fewer than six of Spenser's poems.
- Full Text:
- Date Issued: 1985
- Authors: Brown, Molly Anne
- Date: 1985
- Subjects: Spenser, Edmund, 1552?-1599 -- Criticism and interpretation , Faerie Queene , English poetry , Epic , Criticism , Interpretation , Clout, Colin (Fictitious character)
- Language: English
- Type: text , Thesis , Masters , MA
- Identifier: vital:2180 , http://hdl.handle.net/10962/d1001831
- Description: From introduction: In the sixth book of The Faerie Qveene, the reader is presented with a vision of the Graces and their attendants dancing on Mount Acidale to the piping of a simple shepherd. Spenser identifies this favoured musician as Colin Clout and then goes on to pose a seemingly inconsequential rhetorical question. "Who knowes not Colin Cloute?” he asks. The note of confident pride which can be discerned in the query clearly reveals Spenser's peculiar interest in one of his most intriguing creations. It is almost impossible to read a representative selection of Spenser's poetical works without noticing the hauntingly frequent appearances of his "Southerne shepheardes boye". Colin appears or is named in no fewer than six of Spenser's poems.
- Full Text:
- Date Issued: 1985
Spoken Prayer and Response
- Jouberton Choir, Composer Not Specified, Dargie, Dave
- Authors: Jouberton Choir , Composer Not Specified , Dargie, Dave
- Date: 1985
- Subjects: Folk music , Field recordings , Africa, Sub-Saharan , Africa South Africa Jouberton f-sa
- Language: isiXhosa
- Type: sound recordings , field recordings , sound recording-musical
- Identifier: http://hdl.handle.net/10962/296593 , vital:57468 , International Library of African Music, Rhodes University, Makhanda, South Africa , Dave Dargie Field Tapes, Rhodes University, Makhanda, South Africa , DD093-28
- Description: Sunday Mass Hymn with Marimba accompaniment.
- Full Text: false
- Date Issued: 1985
- Authors: Jouberton Choir , Composer Not Specified , Dargie, Dave
- Date: 1985
- Subjects: Folk music , Field recordings , Africa, Sub-Saharan , Africa South Africa Jouberton f-sa
- Language: isiXhosa
- Type: sound recordings , field recordings , sound recording-musical
- Identifier: http://hdl.handle.net/10962/296593 , vital:57468 , International Library of African Music, Rhodes University, Makhanda, South Africa , Dave Dargie Field Tapes, Rhodes University, Makhanda, South Africa , DD093-28
- Description: Sunday Mass Hymn with Marimba accompaniment.
- Full Text: false
- Date Issued: 1985
Stative Verbs
- Authors: De Villiers, André R W
- Date: 1985
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/460756 , vital:76033 , https://journals.co.za/doi/epdf/10.10520/AJA00284459_414
- Description: New Coin is one of South Africa's most established and influential poetry journals. It publishes poetry, and poetry-related reviews, commentary and interviews. New Coin places a particular emphasis on evolving forms and experimental use of the English language in poetry in the South African context. In this sense it has traced the most exciting trends and currents in contemporary poetry in South Africa for a decade of more. The journal is published twice a year in June and December by the Institute for the Study of English in Africa (ISEA), Rhodes University.
- Full Text:
- Date Issued: 1985
- Authors: De Villiers, André R W
- Date: 1985
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/460756 , vital:76033 , https://journals.co.za/doi/epdf/10.10520/AJA00284459_414
- Description: New Coin is one of South Africa's most established and influential poetry journals. It publishes poetry, and poetry-related reviews, commentary and interviews. New Coin places a particular emphasis on evolving forms and experimental use of the English language in poetry in the South African context. In this sense it has traced the most exciting trends and currents in contemporary poetry in South Africa for a decade of more. The journal is published twice a year in June and December by the Institute for the Study of English in Africa (ISEA), Rhodes University.
- Full Text:
- Date Issued: 1985
Subulela kuThixo, Alleluia
- Zingisa Seminary Congregation, Composer not specified, Dargie, Dave
- Authors: Zingisa Seminary Congregation , Composer not specified , Dargie, Dave
- Date: 1985
- Subjects: Folk music , Sacred music , Field recordings , Africa, Sub-Saharan , Africa South Africa Umtata sa
- Language: isiXhosa
- Type: sound recordings , field recordings , sound recording-musical
- Identifier: http://hdl.handle.net/10962/416232 , vital:71330 , International Library of African Music, Rhodes University, Makhanda, South Africa , Dave Dargie Field Tapes, Rhodes University, Makhanda, South Africa , DDC146b-13
- Description: Catholic mass hymn, accompanied by clapping.
- Full Text: false
- Date Issued: 1985
- Authors: Zingisa Seminary Congregation , Composer not specified , Dargie, Dave
- Date: 1985
- Subjects: Folk music , Sacred music , Field recordings , Africa, Sub-Saharan , Africa South Africa Umtata sa
- Language: isiXhosa
- Type: sound recordings , field recordings , sound recording-musical
- Identifier: http://hdl.handle.net/10962/416232 , vital:71330 , International Library of African Music, Rhodes University, Makhanda, South Africa , Dave Dargie Field Tapes, Rhodes University, Makhanda, South Africa , DDC146b-13
- Description: Catholic mass hymn, accompanied by clapping.
- Full Text: false
- Date Issued: 1985
Sung Prayer and Amen
- Christ the New Man Centre Congregation, Composer not specified, Dargie, Dave
- Authors: Christ the New Man Centre Congregation , Composer not specified , Dargie, Dave
- Date: 1985
- Subjects: Folk music , Field recordings , Africa, Sub-Saharan , Africa South Africa Garankuwa f-sa
- Language: Sestswana
- Type: sound recordings , field recordings , sound recording-musical
- Identifier: http://hdl.handle.net/10962/295412 , vital:57333 , International Library of African Music, Rhodes University, Makhanda, South Africa , Dave Dargie Field Tapes, Rhodes University, Makhanda, South Africa , DD092-05
- Description: Sung mass at Christ the New Man Centre, GaRankuwa with clapping and drum accompaniment.
- Full Text: false
- Date Issued: 1985
- Authors: Christ the New Man Centre Congregation , Composer not specified , Dargie, Dave
- Date: 1985
- Subjects: Folk music , Field recordings , Africa, Sub-Saharan , Africa South Africa Garankuwa f-sa
- Language: Sestswana
- Type: sound recordings , field recordings , sound recording-musical
- Identifier: http://hdl.handle.net/10962/295412 , vital:57333 , International Library of African Music, Rhodes University, Makhanda, South Africa , Dave Dargie Field Tapes, Rhodes University, Makhanda, South Africa , DD092-05
- Description: Sung mass at Christ the New Man Centre, GaRankuwa with clapping and drum accompaniment.
- Full Text: false
- Date Issued: 1985
Sung Prayer with response
- Guguletu St Gabriel's Church Congregation, Composer not specified, Dargie, Dave
- Authors: Guguletu St Gabriel's Church Congregation , Composer not specified , Dargie, Dave
- Date: 1985
- Subjects: Folk music , Sacred music , Field recordings , Africa, Sub-Saharan , Africa South Africa Cape Town sa
- Language: isiXhosa
- Type: sound recordings , field recordings , sound recording-musical
- Identifier: http://hdl.handle.net/10962/416655 , vital:71371 , International Library of African Music, Rhodes University, Makhanda, South Africa , Dave Dargie Field Tapes, Rhodes University, Makhanda, South Africa , DDC148b-02
- Description: Catholic mass prayer with response, accompanied by the drum.
- Full Text: false
- Date Issued: 1985
- Authors: Guguletu St Gabriel's Church Congregation , Composer not specified , Dargie, Dave
- Date: 1985
- Subjects: Folk music , Sacred music , Field recordings , Africa, Sub-Saharan , Africa South Africa Cape Town sa
- Language: isiXhosa
- Type: sound recordings , field recordings , sound recording-musical
- Identifier: http://hdl.handle.net/10962/416655 , vital:71371 , International Library of African Music, Rhodes University, Makhanda, South Africa , Dave Dargie Field Tapes, Rhodes University, Makhanda, South Africa , DDC148b-02
- Description: Catholic mass prayer with response, accompanied by the drum.
- Full Text: false
- Date Issued: 1985
Tarhu Bawo
- Zionists, Composer not specified, Dargie, Dave
- Authors: Zionists , Composer not specified , Dargie, Dave
- Date: 1985
- Subjects: Folk music , Field recordings , Africa, Sub-Saharan , Africa South Africa City not specified f-sa
- Language: isiXhosa
- Type: sound recordings , field recordings , sound recording-musical
- Identifier: http://hdl.handle.net/10962/298098 , vital:57664 , International Library of African Music, Rhodes University, Makhanda, South Africa , Dave Dargie Field Tapes, Rhodes University, Makhanda, South Africa , DD097-18
- Description: Religious music.
- Full Text: false
- Date Issued: 1985
- Authors: Zionists , Composer not specified , Dargie, Dave
- Date: 1985
- Subjects: Folk music , Field recordings , Africa, Sub-Saharan , Africa South Africa City not specified f-sa
- Language: isiXhosa
- Type: sound recordings , field recordings , sound recording-musical
- Identifier: http://hdl.handle.net/10962/298098 , vital:57664 , International Library of African Music, Rhodes University, Makhanda, South Africa , Dave Dargie Field Tapes, Rhodes University, Makhanda, South Africa , DD097-18
- Description: Religious music.
- Full Text: false
- Date Issued: 1985
Teacher-stress in South African state high schools
- Authors: Laughton, Lorraine Rosemary
- Date: 1985
- Subjects: Teachers -- Job stress -- South Africa High school teachers -- South Africa -- Attitudes High school teachers -- South Africa -- Social conditions
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: vital:1879 , http://hdl.handle.net/10962/d1005865
- Full Text:
- Date Issued: 1985
- Authors: Laughton, Lorraine Rosemary
- Date: 1985
- Subjects: Teachers -- Job stress -- South Africa High school teachers -- South Africa -- Attitudes High school teachers -- South Africa -- Social conditions
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: vital:1879 , http://hdl.handle.net/10962/d1005865
- Full Text:
- Date Issued: 1985
The arrangement and structure of feather melanin granules as a taxonomic character in African starlings (Sturnidae)
- Craig, Adrian J F K, Hartley, Alex H
- Authors: Craig, Adrian J F K , Hartley, Alex H
- Date: 1985
- Subjects: To be catalogued
- Language: English
- Type: article
- Identifier: http://hdl.handle.net/10962/465507 , vital:76615 , https://www.jstor.org/stable/4086659
- Description: Electron micrographs of transverse sections of starling feathers, show-ing different structural types:(a) type A, Creatophora cinerea;(b) type B, Poeoptera kenricki;(c) type B, Lamprotornis purpureiceps;(d) type C, Spreo fischeri. nus Hylopsar, and are grouped as a superspecies by Hall and Moreau (1970). Here similar colors apparently are produced by a very different underlying structure. While these species share type B with the genus Poeoptera, there are differences in the details of the melanin granule arrangement, as well as other morphological differences.
- Full Text:
- Date Issued: 1985
- Authors: Craig, Adrian J F K , Hartley, Alex H
- Date: 1985
- Subjects: To be catalogued
- Language: English
- Type: article
- Identifier: http://hdl.handle.net/10962/465507 , vital:76615 , https://www.jstor.org/stable/4086659
- Description: Electron micrographs of transverse sections of starling feathers, show-ing different structural types:(a) type A, Creatophora cinerea;(b) type B, Poeoptera kenricki;(c) type B, Lamprotornis purpureiceps;(d) type C, Spreo fischeri. nus Hylopsar, and are grouped as a superspecies by Hall and Moreau (1970). Here similar colors apparently are produced by a very different underlying structure. While these species share type B with the genus Poeoptera, there are differences in the details of the melanin granule arrangement, as well as other morphological differences.
- Full Text:
- Date Issued: 1985
The development of the system of individual tenure for Africans: with special reference to the Glen Grey Act, c1894-1922
- Authors: Ally, Russell Thomas
- Date: 1985
- Subjects: Cape of Good Hope (South Africa) -- History , Labor policy -- South Africa -- History , Black people -- Employment -- South Africa -- History , South Africa -- Politics and government -- History
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:2576 , http://hdl.handle.net/10962/d1003122 , Cape of Good Hope (South Africa) -- History , Labor policy -- South Africa -- History , Black people -- Employment -- South Africa -- History , South Africa -- Politics and government -- History
- Description: The Glen Grey Act was promulgated in August 1894. The main provisions of the Act were for the survey into individual allotments of land held tribally and for a system of local self-government. Described by its originator, C.J. Rhodes, as a 'Bill for Africa, it was first applied to the district of Glen Grey and subsequently extended (in a piece-meal fashion) to a number of districts in the Transkei. The Act was introduced at a crucial stage in South Africa's history. During this period the country stood poised on the threshhold of a significant and far-reaching transformation. The South Africa of 'old', predominantly agricultural and rural was giving way to a 'new' South Africa, modern and industrial. At the centre of this development was the mineral discoveries of the 1860s and 1880s. The period of colonial conquest had also virtually been completed. Most of the hitherto independent African chiefdoms had either been broken up or were under European control. The most urgent problem which now faced the new rulers was devising a policy to govern the millions of black people over whom they had assumed responsibility. Of crucial concern was the creation of working class to minister to the needs of the developing economy. This task was made all the more difficult by the divisions which existed among the ruling groups at the time. To all intents and purposes the country was made up of essentially four independent and autonomous regions. Although the economic changes which were taking place would hasten the unification of the country, until that happened it was well-nigh impossible for a uniform 'native policy' to take shape. The inevitable consequence was the emergence of a number of regional responses to what was essentially a country-wide issue. As the unification of South Africa drew closer however these different regional responses began to vie with each other for supremacy at a national level. The Glen Grey policy then was the response of the Cape to the changes which were taking place in the country. As such, it drew much of its inspiration from the traditions which had developed in the Cape Colony. Its initiators did not however view it as only a regional policy. For them it had applicability to the whole country. It was therefore to be expected that they would attempt to 'sell' their policy to the rest of the country. In the end however it won few adherents outside of the Cape Colony and when Union became an established fact it bowed out to a policy favoured largely by the northern provinces. To be sure the Glen Grey system did linger on for a while in those districts where it had first been applied but it would not be long before it was to fall into official disapproval. While the Glen Grey Act was ushered in with much fanfare and vaunted expectations, its demise was silent and ignominous. The grandiose course which it had charted for the taking-in-hand of the 'native question' came to naught, as did the profound and far-reaching changes which it was believed the policy would inaugurate. The origins of this policy, its implementation and actual working, and the reasons why in the end it foundered and was abandoned will be the main themes of this thesis.
- Full Text:
- Date Issued: 1985
- Authors: Ally, Russell Thomas
- Date: 1985
- Subjects: Cape of Good Hope (South Africa) -- History , Labor policy -- South Africa -- History , Black people -- Employment -- South Africa -- History , South Africa -- Politics and government -- History
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:2576 , http://hdl.handle.net/10962/d1003122 , Cape of Good Hope (South Africa) -- History , Labor policy -- South Africa -- History , Black people -- Employment -- South Africa -- History , South Africa -- Politics and government -- History
- Description: The Glen Grey Act was promulgated in August 1894. The main provisions of the Act were for the survey into individual allotments of land held tribally and for a system of local self-government. Described by its originator, C.J. Rhodes, as a 'Bill for Africa, it was first applied to the district of Glen Grey and subsequently extended (in a piece-meal fashion) to a number of districts in the Transkei. The Act was introduced at a crucial stage in South Africa's history. During this period the country stood poised on the threshhold of a significant and far-reaching transformation. The South Africa of 'old', predominantly agricultural and rural was giving way to a 'new' South Africa, modern and industrial. At the centre of this development was the mineral discoveries of the 1860s and 1880s. The period of colonial conquest had also virtually been completed. Most of the hitherto independent African chiefdoms had either been broken up or were under European control. The most urgent problem which now faced the new rulers was devising a policy to govern the millions of black people over whom they had assumed responsibility. Of crucial concern was the creation of working class to minister to the needs of the developing economy. This task was made all the more difficult by the divisions which existed among the ruling groups at the time. To all intents and purposes the country was made up of essentially four independent and autonomous regions. Although the economic changes which were taking place would hasten the unification of the country, until that happened it was well-nigh impossible for a uniform 'native policy' to take shape. The inevitable consequence was the emergence of a number of regional responses to what was essentially a country-wide issue. As the unification of South Africa drew closer however these different regional responses began to vie with each other for supremacy at a national level. The Glen Grey policy then was the response of the Cape to the changes which were taking place in the country. As such, it drew much of its inspiration from the traditions which had developed in the Cape Colony. Its initiators did not however view it as only a regional policy. For them it had applicability to the whole country. It was therefore to be expected that they would attempt to 'sell' their policy to the rest of the country. In the end however it won few adherents outside of the Cape Colony and when Union became an established fact it bowed out to a policy favoured largely by the northern provinces. To be sure the Glen Grey system did linger on for a while in those districts where it had first been applied but it would not be long before it was to fall into official disapproval. While the Glen Grey Act was ushered in with much fanfare and vaunted expectations, its demise was silent and ignominous. The grandiose course which it had charted for the taking-in-hand of the 'native question' came to naught, as did the profound and far-reaching changes which it was believed the policy would inaugurate. The origins of this policy, its implementation and actual working, and the reasons why in the end it foundered and was abandoned will be the main themes of this thesis.
- Full Text:
- Date Issued: 1985
The distribution of the Pied Starling, and southern African biogeography
- Authors: Craig, Adrian J F K
- Date: 1985
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/447882 , vital:74681 , https://doi.org/10.1080/00306525.1985.9639580
- Description: The Pied Starling is restricted to South Africa, Lesotho and Swaziland, but within this region it occupies a variety of habitats. Its modern distribution is certainly influenced by its association with man. However, a comparison with other vertebrate species, and with patterns of plant distribution, suggests that its geographical distribution has been determined primarily by its evolutionary history. A hypothesis for the origin of this species leads to several predictions concerning biogeography in southern Africa.
- Full Text:
- Date Issued: 1985
- Authors: Craig, Adrian J F K
- Date: 1985
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/447882 , vital:74681 , https://doi.org/10.1080/00306525.1985.9639580
- Description: The Pied Starling is restricted to South Africa, Lesotho and Swaziland, but within this region it occupies a variety of habitats. Its modern distribution is certainly influenced by its association with man. However, a comparison with other vertebrate species, and with patterns of plant distribution, suggests that its geographical distribution has been determined primarily by its evolutionary history. A hypothesis for the origin of this species leads to several predictions concerning biogeography in southern Africa.
- Full Text:
- Date Issued: 1985
The ecology of Cactoblastis cactorum (Berg) (Lepidoptera : phycitidae) in relation to its effectiveness as a biological control agent of prickly pear and jointed cactus in South Africa
- Authors: Robertson, Hamish Gibson
- Date: 1985
- Subjects: Insect-plant relationships Lepidoptera -- South Africa Cactus -- South Africa Weeds -- Biological control -- South Africa
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:5671 , http://hdl.handle.net/10962/d1005356
- Description: The successful biological control of the shrub-like prickly pear Opuntia stricta Haworth in Australia by cactoblastis cactorum (Berg) was not repeated when C. cactorum, derived from the Australian population, was released in South Africa in the 1930's against the tree prickly pear Opuntia ficus-indica (L.) Miller. Resistance of the woody portions of o. ficus-indica to attack by C. cactorum was regarded as the main reason for the poor performance of C. cactorum in South Africa. C. cactorum also oviposits and feeds on Opuntia aurantiaca Lindley, which is currently South Africa's most important weed and which is also considered to be partly resistant to attack by C. cactorum. This study had three main objectives: (i) to compare the ecology and effectiveness of C. cactorum as a biological control agent on O. ficusindica and O. aurantiaca; (ii) to reassess why C. cactorum has not been as effective a biological control agent in South Africa as it has been in Australia; and (iii) to evaluate whether inundative release or the importation of new biotypes of C. cactorum from South America (where it is indigenous) might be feasible methods of improving its effectiveness as a biological control agent of O. aurantiaca in South Africa. All field work was undertaken at a site near Grahamstown in South Africa. The ecology and effectiveness of C. cactorum on O. ficus-indica and O. aurantiaca was assessed in terms of its oviposition behaviour, survival and feeding on these host plants. The proportion of C. cactorum eggs laid on O. ficus-indica and O. aurantiaca was similar and was influenced by the size, conspicuousness and condition of the host plant as well as by the proximity of the host plant to moth emergence sites. Factors affecting oviposition site selection on the plant are also considered. Life tables, compiled for a summer and a winter generation, showed that the survival of C. cactorum was greater on O. ficus-indica than on O. aurantiaca, mainly because higher egg predation by ants occurred on the latter host plant species. During the period of study, the population size of C. cactorum was reduced by a number of mortality factors, of which egg predation and the effects of low temperatures on fecundity were the most important. Although there was evidence of a partial, positive response by predatory ants to C. cactorum egg densities on plants, the extent of egg predation was also affected by other factors, particularly seasonal effects. C. cactorum destroyed a greater percentage of cladodes on O. ficu-indica than on O. aurantiaca, but even on O. ficus-indica it was unable to contain the growth of plants within the study area. C. cactorum larvae rarely killed the woody rooted cladodes of O. ficus-indica and O. aurantiaca and consequently whole plants were not often destroyed. The detrimental effects of host plant resistance, natural enemies and climate on the effectiveness of C. cactorum as a biological control agent all appear to be greater in South Africa than in most of the regions occupied by C. cactorum in Australia. A field experiment conducted at the study site showed that inundative release methods for improving the effectiveness of C. cactorum on O. aurantiaca are not feasible. The importation of biotypes of C. cactorum from South America that might be better suited for destroying O. aurantiaca infestations in South Africa, is also not a viable option. Results of a survey of a 218 ha area that is regarded as being heavily infested with O. aurantiaca, illustrate how this cactus species has been overrated as a weed problem. It is argued that the present strategy for O. aurantiaca control in South Africa is not based on sound economic or ecological criteria.
- Full Text:
- Date Issued: 1985
- Authors: Robertson, Hamish Gibson
- Date: 1985
- Subjects: Insect-plant relationships Lepidoptera -- South Africa Cactus -- South Africa Weeds -- Biological control -- South Africa
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:5671 , http://hdl.handle.net/10962/d1005356
- Description: The successful biological control of the shrub-like prickly pear Opuntia stricta Haworth in Australia by cactoblastis cactorum (Berg) was not repeated when C. cactorum, derived from the Australian population, was released in South Africa in the 1930's against the tree prickly pear Opuntia ficus-indica (L.) Miller. Resistance of the woody portions of o. ficus-indica to attack by C. cactorum was regarded as the main reason for the poor performance of C. cactorum in South Africa. C. cactorum also oviposits and feeds on Opuntia aurantiaca Lindley, which is currently South Africa's most important weed and which is also considered to be partly resistant to attack by C. cactorum. This study had three main objectives: (i) to compare the ecology and effectiveness of C. cactorum as a biological control agent on O. ficusindica and O. aurantiaca; (ii) to reassess why C. cactorum has not been as effective a biological control agent in South Africa as it has been in Australia; and (iii) to evaluate whether inundative release or the importation of new biotypes of C. cactorum from South America (where it is indigenous) might be feasible methods of improving its effectiveness as a biological control agent of O. aurantiaca in South Africa. All field work was undertaken at a site near Grahamstown in South Africa. The ecology and effectiveness of C. cactorum on O. ficus-indica and O. aurantiaca was assessed in terms of its oviposition behaviour, survival and feeding on these host plants. The proportion of C. cactorum eggs laid on O. ficus-indica and O. aurantiaca was similar and was influenced by the size, conspicuousness and condition of the host plant as well as by the proximity of the host plant to moth emergence sites. Factors affecting oviposition site selection on the plant are also considered. Life tables, compiled for a summer and a winter generation, showed that the survival of C. cactorum was greater on O. ficus-indica than on O. aurantiaca, mainly because higher egg predation by ants occurred on the latter host plant species. During the period of study, the population size of C. cactorum was reduced by a number of mortality factors, of which egg predation and the effects of low temperatures on fecundity were the most important. Although there was evidence of a partial, positive response by predatory ants to C. cactorum egg densities on plants, the extent of egg predation was also affected by other factors, particularly seasonal effects. C. cactorum destroyed a greater percentage of cladodes on O. ficu-indica than on O. aurantiaca, but even on O. ficus-indica it was unable to contain the growth of plants within the study area. C. cactorum larvae rarely killed the woody rooted cladodes of O. ficus-indica and O. aurantiaca and consequently whole plants were not often destroyed. The detrimental effects of host plant resistance, natural enemies and climate on the effectiveness of C. cactorum as a biological control agent all appear to be greater in South Africa than in most of the regions occupied by C. cactorum in Australia. A field experiment conducted at the study site showed that inundative release methods for improving the effectiveness of C. cactorum on O. aurantiaca are not feasible. The importation of biotypes of C. cactorum from South America that might be better suited for destroying O. aurantiaca infestations in South Africa, is also not a viable option. Results of a survey of a 218 ha area that is regarded as being heavily infested with O. aurantiaca, illustrate how this cactus species has been overrated as a weed problem. It is argued that the present strategy for O. aurantiaca control in South Africa is not based on sound economic or ecological criteria.
- Full Text:
- Date Issued: 1985
The effect of sewage on the distribution of seaweed at the Bats Cave east bank sewage outfall in East London, South Africa
- Authors: Klenk, Theodore Charles
- Date: 1985 , 2013-03-13
- Subjects: Marine algae -- Dispersal -- South Africa -- East London , Sewage disposal in the ocean -- South Africa -- East London , Plants -- Effect of sewage on
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:4238 , http://hdl.handle.net/10962/d1004768 , Marine algae -- Dispersal -- South Africa -- East London , Sewage disposal in the ocean -- South Africa -- East London , Plants -- Effect of sewage on
- Description: In order to determine which seaweeds were unable to survive in the stressed area and how far the effect of the effluent extended along the coast, various methods were applied and carried out over a two-year period between November 1982 and November 1984. Three major long-term studies took place. The first study was to determine the presence or absence of the seaweeds throughout (1) the entire study area and then (2) in areas broken up into sections with known distances from the outfalls. The second method involved statistical evaluations using point intersect methods and photography to produce information to determine species density, diversity, evenness, and to provide the information required to work with a number of ecological equations in the future. The third method incorporated a long-term survey on cleared plots in various sectors of the study area. The recolonization of the plots was recorded over a thirty-week period. (par. 1.1, p. 6-7)
- Full Text:
- Date Issued: 1985
- Authors: Klenk, Theodore Charles
- Date: 1985 , 2013-03-13
- Subjects: Marine algae -- Dispersal -- South Africa -- East London , Sewage disposal in the ocean -- South Africa -- East London , Plants -- Effect of sewage on
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:4238 , http://hdl.handle.net/10962/d1004768 , Marine algae -- Dispersal -- South Africa -- East London , Sewage disposal in the ocean -- South Africa -- East London , Plants -- Effect of sewage on
- Description: In order to determine which seaweeds were unable to survive in the stressed area and how far the effect of the effluent extended along the coast, various methods were applied and carried out over a two-year period between November 1982 and November 1984. Three major long-term studies took place. The first study was to determine the presence or absence of the seaweeds throughout (1) the entire study area and then (2) in areas broken up into sections with known distances from the outfalls. The second method involved statistical evaluations using point intersect methods and photography to produce information to determine species density, diversity, evenness, and to provide the information required to work with a number of ecological equations in the future. The third method incorporated a long-term survey on cleared plots in various sectors of the study area. The recolonization of the plots was recorded over a thirty-week period. (par. 1.1, p. 6-7)
- Full Text:
- Date Issued: 1985
The fishes of the Okavango drainage system in Angola, South West Africa and Botswana: taxonomy and distribution
- Skelton, Paul H (Paul Harvey), Bruton, M N, Merron, G S, Van der Waal, C W
- Authors: Skelton, Paul H (Paul Harvey) , Bruton, M N , Merron, G S , Van der Waal, C W
- Date: 1985
- Language: English
- Type: Text
- Identifier: vital:15009 , http://hdl.handle.net/10962/d1019742 , ISSN 0073-4381 , Ichthyological Bulletin of the J.L.B. Smith Institute of Ichthyology; No. 50
- Description: The publication of a new phase of research on the fishes of the Okavango drainage starts with this account which gives the valid names and broad distribution patterns of all species known from the system. Eighty species and subspecies are recognised, of which at least two (Parakneria fortuita Penrith; Serranochromis gracilis Greenwood) are endemic. Notes on early collections, synonymy, taxonomic status and distribution are given. New synonyms are recognized under Aplocheilichthys hutereaui (A. schalleri), Aplocheilichthys johnstoni (Haplochilus carlislei) and Ctenopoma multispinis (Ctenopoma machadoi) respectively. Recently published taxonomic changes are incorporated including two genera (Mesobola and Afromastacembelus), a species Serranochromis (Sargochromis) gracilis and the re-allocated Amphilius uranoscopus. The Zambezian Hemichromis species is re-identified as H. elongatus. A number of unresolved taxonomic problems are pointed out and certain dubious records are excluded from the checklist. The Okavango has a diverse fish fauna with tropical affinities. Many fish species are poorly studied. Man-induced threats to the continued natural functioning of this complex and dynamic system, especially large-scale water abstraction, overgrazing, deforestation and biocide spraying to eliminate tsetse fly, make it imperative that studies on the nature and role of the fishes are continued. , Rhodes University Libraries (Digitisation)
- Full Text:
- Date Issued: 1985
- Authors: Skelton, Paul H (Paul Harvey) , Bruton, M N , Merron, G S , Van der Waal, C W
- Date: 1985
- Language: English
- Type: Text
- Identifier: vital:15009 , http://hdl.handle.net/10962/d1019742 , ISSN 0073-4381 , Ichthyological Bulletin of the J.L.B. Smith Institute of Ichthyology; No. 50
- Description: The publication of a new phase of research on the fishes of the Okavango drainage starts with this account which gives the valid names and broad distribution patterns of all species known from the system. Eighty species and subspecies are recognised, of which at least two (Parakneria fortuita Penrith; Serranochromis gracilis Greenwood) are endemic. Notes on early collections, synonymy, taxonomic status and distribution are given. New synonyms are recognized under Aplocheilichthys hutereaui (A. schalleri), Aplocheilichthys johnstoni (Haplochilus carlislei) and Ctenopoma multispinis (Ctenopoma machadoi) respectively. Recently published taxonomic changes are incorporated including two genera (Mesobola and Afromastacembelus), a species Serranochromis (Sargochromis) gracilis and the re-allocated Amphilius uranoscopus. The Zambezian Hemichromis species is re-identified as H. elongatus. A number of unresolved taxonomic problems are pointed out and certain dubious records are excluded from the checklist. The Okavango has a diverse fish fauna with tropical affinities. Many fish species are poorly studied. Man-induced threats to the continued natural functioning of this complex and dynamic system, especially large-scale water abstraction, overgrazing, deforestation and biocide spraying to eliminate tsetse fly, make it imperative that studies on the nature and role of the fishes are continued. , Rhodes University Libraries (Digitisation)
- Full Text:
- Date Issued: 1985
The geochemical stratigraphy of the volcanic rocks of the Witwatersrand triad in the Klerksdorp area, Transvaal
- Authors: Bowen, Teral Barbara
- Date: 1985 , 2013-03-14
- Subjects: Lava -- South Africa -- Transvaal , Igneous rocks -- South Africa -- Transvaal , Geochemistry -- South Africa -- Transvaal
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:4932 , http://hdl.handle.net/10962/d1004932 , Lava -- South Africa -- Transvaal , Igneous rocks -- South Africa -- Transvaal , Geochemistry -- South Africa -- Transvaal
- Description: This study lias initiated with the aim of identifying the existence of any geochemical criteria which may be used to distinguish between the various volcanic formations within the Witwatersrand triad. The Witwatersrand triad comprises three sequences: the Dominion Group at the base, the Witwatersrand Supergroup in the middle, and the Ventersdorp Supergroup at the top. It is underlain by Archaean basement rocks, and covered by rocks of the Transvaal sequence. The Dominion Group consists of the sedimentary Rhenosterspruit quartzite Formation at the base, overlain by a bimodal component of the Syferfontein Porphyry succession of lavas. Basaltic lavas are the major component of the Rhenosterhoek Formation, while the overlying Formation consists primarily of dacitic porphyries. Intercalations of one lava type within the other are common, however, so each formation is not the exclusive domain of only one lava type. The Witwatersrand Supergroup, a predominantly argillaceous and arenaceous sequence, contains two narrow volcanic horizons, one of wbich, the Jeppestown Amygdaloid (now Crown Formation), consisting of tholeiitic andesites, occurs in the study area. The overlying Ventersdorp Supergroup has, at its base, the basaltic Klipriviersberg Group, of which four out of six formations are present in the study area, namely, the Alberton, Orkney, Loraine and Edenville Formations. This group is succeeded unconformably by the PIatberg Group, consisting of the sedimentary Kameel doorns Formation, followed by the (informal) Goedgenoeg, Makwassie Quartz Porphyry and Rietgat Formations. The Goedgenoeg and Rietgat Formations are basaltic, whil e the Mawassie rocks range from basaltic to dacitic, the majority being tholeiitic andesites and andesites . The Pniel sequence at the top of the Ventersdorp Supergroup consists of the sedimentary Bothaville Formation, and the Allarridge Formation, the lavas of which are basaltic with some andesitic tendencies. A well-defined geochemical stratigraphy was found to exist. From the eleven volcanic formations examined, nine distinct geochemical units emerged, as the Loraine and Edenville Formations were found to have the same geochemical characteristics, as did the Goedgenoeg and Rietgat Formations. Despite having undergone law-grade greenschist facies metamorphism, very clear variation patterns with height are displayed by the immobile elements Ti, P, Kb, Zr and Y, and the light rare earth elements La, Ce and Nd. In contrast, much scatter was observed in the variation patterns of Na, K, Mn, Ba and Rb. Three techniques were employed to effect discrimination between formations - orthosonal discrimination, interelement and ratio vs ratio plots, and discriminant analysis. Confidence limits placed on normal probability plots served to isolate outlier samples for further examination by the various discrimination techniques. A successful test of the efficacy of the discrimination techniques was afforded when fourteen samples from an unknown succession were positively identified as representative of the Klipriviersberg Group
- Full Text:
- Date Issued: 1985
- Authors: Bowen, Teral Barbara
- Date: 1985 , 2013-03-14
- Subjects: Lava -- South Africa -- Transvaal , Igneous rocks -- South Africa -- Transvaal , Geochemistry -- South Africa -- Transvaal
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:4932 , http://hdl.handle.net/10962/d1004932 , Lava -- South Africa -- Transvaal , Igneous rocks -- South Africa -- Transvaal , Geochemistry -- South Africa -- Transvaal
- Description: This study lias initiated with the aim of identifying the existence of any geochemical criteria which may be used to distinguish between the various volcanic formations within the Witwatersrand triad. The Witwatersrand triad comprises three sequences: the Dominion Group at the base, the Witwatersrand Supergroup in the middle, and the Ventersdorp Supergroup at the top. It is underlain by Archaean basement rocks, and covered by rocks of the Transvaal sequence. The Dominion Group consists of the sedimentary Rhenosterspruit quartzite Formation at the base, overlain by a bimodal component of the Syferfontein Porphyry succession of lavas. Basaltic lavas are the major component of the Rhenosterhoek Formation, while the overlying Formation consists primarily of dacitic porphyries. Intercalations of one lava type within the other are common, however, so each formation is not the exclusive domain of only one lava type. The Witwatersrand Supergroup, a predominantly argillaceous and arenaceous sequence, contains two narrow volcanic horizons, one of wbich, the Jeppestown Amygdaloid (now Crown Formation), consisting of tholeiitic andesites, occurs in the study area. The overlying Ventersdorp Supergroup has, at its base, the basaltic Klipriviersberg Group, of which four out of six formations are present in the study area, namely, the Alberton, Orkney, Loraine and Edenville Formations. This group is succeeded unconformably by the PIatberg Group, consisting of the sedimentary Kameel doorns Formation, followed by the (informal) Goedgenoeg, Makwassie Quartz Porphyry and Rietgat Formations. The Goedgenoeg and Rietgat Formations are basaltic, whil e the Mawassie rocks range from basaltic to dacitic, the majority being tholeiitic andesites and andesites . The Pniel sequence at the top of the Ventersdorp Supergroup consists of the sedimentary Bothaville Formation, and the Allarridge Formation, the lavas of which are basaltic with some andesitic tendencies. A well-defined geochemical stratigraphy was found to exist. From the eleven volcanic formations examined, nine distinct geochemical units emerged, as the Loraine and Edenville Formations were found to have the same geochemical characteristics, as did the Goedgenoeg and Rietgat Formations. Despite having undergone law-grade greenschist facies metamorphism, very clear variation patterns with height are displayed by the immobile elements Ti, P, Kb, Zr and Y, and the light rare earth elements La, Ce and Nd. In contrast, much scatter was observed in the variation patterns of Na, K, Mn, Ba and Rb. Three techniques were employed to effect discrimination between formations - orthosonal discrimination, interelement and ratio vs ratio plots, and discriminant analysis. Confidence limits placed on normal probability plots served to isolate outlier samples for further examination by the various discrimination techniques. A successful test of the efficacy of the discrimination techniques was afforded when fourteen samples from an unknown succession were positively identified as representative of the Klipriviersberg Group
- Full Text:
- Date Issued: 1985
The geochemistry of basic volcanics of the Dordabis Formation northeast of Dordabis and their significance for correlations within, and evolution of, the Rehoboth Magmatic Arc
- Marsh, Julian S, Williams-Jones, I E
- Authors: Marsh, Julian S , Williams-Jones, I E
- Date: 1985
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/69763 , vital:29577 , http://www.mme.gov.na/files/publications/95f_Williams-Jones and Marsh_Dordabis Fm.pdf
- Description: Gevers (1934) named the succession of quartzites, feld-spathic sandstones, massive conglomeratic arkoses and sedimentary breccias around Dordabis, the Dordabis Series. He considered this series to be of Nama age and the basic volcanics in the series to be post Nama, pre-Karoo eruptive diabase. Schalk (pers. comm.) has found the succession to be pre-Damara in age and possibly equivalent to the Sinclair Sequence. These ‘Dordabis Series’ rocks have since been incorrectly included into the Marienhof Formation of the Rehoboth Sequence on the 1980 1:1 000 000 Geological Map of SWA/Namibia. In this report, it is suggested that this succession be called the Dordabis Formation.
- Full Text:
- Date Issued: 1985
- Authors: Marsh, Julian S , Williams-Jones, I E
- Date: 1985
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/69763 , vital:29577 , http://www.mme.gov.na/files/publications/95f_Williams-Jones and Marsh_Dordabis Fm.pdf
- Description: Gevers (1934) named the succession of quartzites, feld-spathic sandstones, massive conglomeratic arkoses and sedimentary breccias around Dordabis, the Dordabis Series. He considered this series to be of Nama age and the basic volcanics in the series to be post Nama, pre-Karoo eruptive diabase. Schalk (pers. comm.) has found the succession to be pre-Damara in age and possibly equivalent to the Sinclair Sequence. These ‘Dordabis Series’ rocks have since been incorrectly included into the Marienhof Formation of the Rehoboth Sequence on the 1980 1:1 000 000 Geological Map of SWA/Namibia. In this report, it is suggested that this succession be called the Dordabis Formation.
- Full Text:
- Date Issued: 1985
The geochemistry of potassic lavas from Vulsini, central Italy and implications for mantle enrichment processes beneath the Roman region
- Rogers, N W, Hawkesworth, C J, Parker, R J, Marsh, Julian S
- Authors: Rogers, N W , Hawkesworth, C J , Parker, R J , Marsh, Julian S
- Date: 1985
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/136034 , vital:37330 , https://doi.org/10.1007/BF00378265
- Description: Major and trace element and 143Nd/144Nd (0.51209–0.51216) and 87Sr/86Sr (0.70879–0.71105) isotope analyses are presented on a representative group of lavas from the Vulsini district of the Roman magmatic province. Three distinct series are identified; the high-K and low-K series are similar to those described from other Italian volcanoes, while the third is represented by a group of relatively undifferentiated leucite basanites which are thought to be near-primary mantle melts.
- Full Text: false
- Date Issued: 1985
- Authors: Rogers, N W , Hawkesworth, C J , Parker, R J , Marsh, Julian S
- Date: 1985
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/136034 , vital:37330 , https://doi.org/10.1007/BF00378265
- Description: Major and trace element and 143Nd/144Nd (0.51209–0.51216) and 87Sr/86Sr (0.70879–0.71105) isotope analyses are presented on a representative group of lavas from the Vulsini district of the Roman magmatic province. Three distinct series are identified; the high-K and low-K series are similar to those described from other Italian volcanoes, while the third is represented by a group of relatively undifferentiated leucite basanites which are thought to be near-primary mantle melts.
- Full Text: false
- Date Issued: 1985
The host-searching behaviour of coccophagus atratus compere (Aphalinidae: hymenoptera)
- Authors: Clark, Maxwell Maitland
- Date: 1985
- Subjects: Coccophagus , Hymenoptera , Insects -- Host plants , Insect-plant relationships
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5630 , http://hdl.handle.net/10962/d1004923 , Coccophagus , Hymenoptera , Insects -- Host plants , Insect-plant relationships
- Description: The host-searching behaviour of the parasitoid Coccophagus atratus Compere was investigated. C. atratus parasitoids have unusual host relationships. Female offspring develop in scale insects but male offspring develop hyperparasitically on their conspecific females, or on other parasitoid species. C. atratus females, therefore, must locate, identify and oviposit into two different types of hosts. A primary aim of this thesis, was to identify when and how the behaviour of a female, searching for hosts suitable for female offspring, differed from that of a female searching for hosts suitable for male offspring. This was done by investigating and comparing the behaviour of virgin and mated females. Virgin females can lay only male eggs while mated females can lay both male and female eggs. The role of plant odours and host odours in attracting C. atratus females to the host habitat and to their scale insect hosts was examined with the aid of an olfactometer. Field observations, to test the validity of results obtained in laboratory experiments, indicated that C. atratus females do not search initially for for their hosts' food plants, but search directly for hosts. Only when hosts were physically located did the behaviour of virgin and mated females differ. Recognition cues used by the females to distinguish between the two types of hosts were identified. Finally, the implications of results obtained were discussed in relation to ecological and evolutionary aspects of heteronomous parasitoid biology.
- Full Text:
- Date Issued: 1985
- Authors: Clark, Maxwell Maitland
- Date: 1985
- Subjects: Coccophagus , Hymenoptera , Insects -- Host plants , Insect-plant relationships
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5630 , http://hdl.handle.net/10962/d1004923 , Coccophagus , Hymenoptera , Insects -- Host plants , Insect-plant relationships
- Description: The host-searching behaviour of the parasitoid Coccophagus atratus Compere was investigated. C. atratus parasitoids have unusual host relationships. Female offspring develop in scale insects but male offspring develop hyperparasitically on their conspecific females, or on other parasitoid species. C. atratus females, therefore, must locate, identify and oviposit into two different types of hosts. A primary aim of this thesis, was to identify when and how the behaviour of a female, searching for hosts suitable for female offspring, differed from that of a female searching for hosts suitable for male offspring. This was done by investigating and comparing the behaviour of virgin and mated females. Virgin females can lay only male eggs while mated females can lay both male and female eggs. The role of plant odours and host odours in attracting C. atratus females to the host habitat and to their scale insect hosts was examined with the aid of an olfactometer. Field observations, to test the validity of results obtained in laboratory experiments, indicated that C. atratus females do not search initially for for their hosts' food plants, but search directly for hosts. Only when hosts were physically located did the behaviour of virgin and mated females differ. Recognition cues used by the females to distinguish between the two types of hosts were identified. Finally, the implications of results obtained were discussed in relation to ecological and evolutionary aspects of heteronomous parasitoid biology.
- Full Text:
- Date Issued: 1985