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Tropical fruit pests and pollinators: biology, economic importance, natural enemies and control, J.E. Peña, J.L. Sharp and M. Wysoki (Eds.): book review

- Villet, Martin H

Authors: Villet, Martin H
Date: 2003
Subjects: To be catalogued
Language: English
Type: text , article
Identifier: http://hdl.handle.net/10962/451790 , vital:75077 , https://hdl.handle.net/10520/EJC32522
Description: This book will interest advanced students and scientists specializing in tropical fruit crops with a focus on horticulture, pollination biology, entomology and especially pest management. The introductory chapter starts with an examination of global trends and statistics in tropical fruit production, and goes on to generalize about their biology.
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Date Issued: 2003

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CANS: Customizable Alarm Notification System, an H. 323 Signalling Service

- Penton, J, Terzoli, Alfredo

Authors: Penton, J , Terzoli, Alfredo
Date: 2002
Language: English
Type: text , article
Identifier: http://hdl.handle.net/10962/427562 , vital:72447 , https://www.cs.ru.ac.za/research/g97p5142/Docs/CANSSATNAC2002.pdf
Description: H. 323 is a standardized signalling protocol for Voice over IP (VoIP) networks, which defines the terminal equipment and services that ena-ble real-time multimedia (data, voice, and video) communication over packetbased networks. One of the major advantages of carrying voice over Computer Networks, as opposed to the traditional SCN, is the pos-sibility of creating a wealth of services and integrating them into the network with minimal time and cost. Among these services, exists a subset that may need to interact at the signalling layer and H. 323 (ver-sion 4) provides mechanisms for this. This paper focuses on an appli-cation that was developed to explore and demonstrate H. 323’s signal-ling service creation and extension mechanisms.
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Date Issued: 2002

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A scientific note on the natural merger of two honeybee colonies (Apis mellifera capensis)

- Neumann, Peter, Pirk, Christian W W, Hepburn, H Randall, Radloff, Sarah E

Authors: Neumann, Peter , Pirk, Christian W W , Hepburn, H Randall , Radloff, Sarah E
Date: 2001
Language: English
Type: text , Article
Identifier: vital:6912 , http://hdl.handle.net/10962/d1011875
Description: Natural mergers of honeybee colonies are commonplace in tropical Africa (Hepburn and Radloff, 1998), but their consequences on organizational structure are unknown. Here we determine the spatial distribution and division of labor of workers (Apis mellifera capensis Esch.) following a merger of two colonies. Two unrelated colonies (each ~3000 bees) were placed in threeframe observation hives. When workers emerged from the sealed brood of each colony, they were individually labeled and reintroduced into their respective mother hives. They are referred to as cohorts Aand B, each comprising 300 workers of the same age. The behaviors and positions of all labeled workers and queens were recorded twice daily for 24 days (Kolmes, 1989; Pirk et al., 2000). On day 14 colony B was dequeened, left its nest and merged with colony A on day 15.
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Date Issued: 2001

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Labour Law amendments

- SAMWU

Authors: SAMWU
Date: Feb 2001
Subjects: SAMWU
Language: English
Type: text
Identifier: http://hdl.handle.net/10962/111107 , vital:33380
Description: Our National Executive Committee met on 20/21 February and, amongst others, deliberated on the latest developments around the proposed labour law amendments. After consideration of the document circulated at the recent COSATU CEC and the subsequent CEC resolution on the matter, our NEC resolved as follows: SAMWU expresses its concern at the manner in which negotiations on the amendments were conducted and more specifically the lack of a more thoroughgoing consultative process involving workers. Already it would appear, as cautioned previously, that the Millenium Labour Council has usurped NEDLAC as the site of engagement on matters of this nature with the latter simply assuming a rubber- stamping role. Of major concern to the Union is the proposed joint vision that serves as a preamble to the agreement concluded between the negotiators in the Millenium Labour Council. In the view of SAMWU, the vision constitutes the first formal embrace by COSATU, notwithstanding the Federation’s vision of socialism, of neo-liberal globalisation viz. economic growth for redistribution. The COSATU view has always been the opposite - growth through redistribution. SAMWU cannot support any agreement with business that acknowledges their right to a ‘competitive’ profit and secure investments. Profits derive directly from the exploitation of workers. If any agreement between business, labour and government on the proposed amendments has to contain a preamble, then SAMWU is of the view that it should simply recognise that notwithstanding fundamental differences on an appropriate macro-economic strategy for the country, the parties have been able to reach agreement on various amendments to labour legislation.
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Date Issued: Feb 2001

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Pseudocloeon cataractae (Crass)(Ephemeroptera: Baetidae): new combination and lectotype designation

- Lugo-Ortis, C R, de Moor, Ferdy C

Authors: Lugo-Ortis, C R , de Moor, Ferdy C
Date: 2001
Subjects: To be catalogued
Language: English
Type: text , article
Identifier: http://hdl.handle.net/10962/452189 , vital:75110 , https://hdl.handle.net/10520/EJC32950
Description: Considerable clarification of taxonomic concepts and phylogenetic relationships within small minnow mayflies (Ephemeroptera: Baetidae) has resulted from recent studies involving Afro-tropical genera and species (Lugo-Ortiz and McCafferty 1996a, b, 1997a, b, 1998a-c; Barber-James and McCafferty 1997; McCafferty et al. 1997; Lugo-Ortiz et al. 1999; Lugo-Ortiz et al. 2001).
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Date Issued: 2001

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The weekly newsletter for COSATU - Affiliates and Regions

- COSATU

Authors: COSATU
Date: 2001
Subjects: COSATU
Language: English
Type: text
Identifier: http://hdl.handle.net/10962/109802 , vital:33191
Description: The largest nursing organisation in the country, the Democratic Nursing Organisation of South Africa (DENOSA), has taken a historic decision to join COSATU at its recent congress held last week in Pretoria. The 200 delegates at the congress voted in favour of the move. The congress was held between under theme: ’’Nursing facing challenges. Development and HIV/Aids." COSATU campaigns secretary, Mcedisi Nontseie, said the union’s affiliation is a step forward in the consolidation of public sector unions within the federation. "This also consolidates white collar workers within the federation and further demystifies the long held reactionary notion that COSATU only represents workers in the lower ranks,” said Nontseie. South African Football Players Organisation (SAPPU) and Performing Arts Workers Equity (PAWE) joined the federation last year. DONOSA’s affiliation is set to boost the federation’s membership from its present of 1.8 million.
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Date Issued: 2001

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Evolutionary trends in southern African glossy starlings (Lamprotornis)

- Craig, Adrian J F K

Authors: Craig, Adrian J F K
Date: 2000
Subjects: To be catalogued
Language: English
Type: text , article
Identifier: http://hdl.handle.net/10962/465369 , vital:76598 , https://doi.org/10.1080/00306525.2000.9639921
Description: In southern African six Lamprotornis species occur in savanna woodland. Locally up to five species may be sympatric, dependent on similar food sources and sharing roost sites. All are obligate tree-hole nesters. Morphological differences concern signal structures (tail length and shape, iris coloration, wing notches) rather than adaptations for feeding. There is very little sexual dimorphism, and when body size is accounted for, there are no significant inter- or intra-specific differences in bill dimensions. The long-tailed L. mevesii and L. australis are probably sister taxa, which evolved in southern Africa. L. nitens and L. acuticaudus are also likely to be southern African in origin, whereas L. chalybaeus and L. chloropterus may have evolved to the north, with their current distribution in southern Africa a consequence of later range expansion. Similar modifications of signal structures in sympatric species are evident in northern glossy starlings.
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Date Issued: 2000

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New bells, new founder - Hillandale, South Africa

- Lewis, Colin A

Authors: Lewis, Colin A
Date: 1999
Language: English
Type: Article
Identifier: vital:6163 , http://hdl.handle.net/10962/d1012350
Description: On the afternoon of Sunday 2nd May 1999, the first ring of bells cast in Africa, the bells at Hillandale, were rung for the first time. This is the second ring of bells to be installed in an institution established by the Order of the Holy Cross, and the seventh ring in South Africa and the tenth ring in Africa. , Colin Lewis was Professor of Geography at Rhodes University, Grahamstown, South Africa from 1989 until his retirement at the end of 2007. In 1990, with the strong support of the incumbent Vice-Chancellor, Dr Derek Henderson, he instigated the Certificate in Change Ringing (Church Bell Ringing) in the Rhodes University Department of Music and Musicology - the first such course to be offered in Africa. Since that date he has lectured in the basic theory, and taught the practice of change ringing. He is the Ringing Master of the Cathedral of St Michael and St George, Grahamstown, South Africa.
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Date Issued: 1999

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Temporal variability in the effects of grazing by the territorial limpet Patella longicosta on the productivity of the crustose alga Ralfsia verrucosa

- Kaehler, Sven, Froneman, P William

Authors: Kaehler, Sven , Froneman, P William
Date: 1999
Language: English
Type: Article
Identifier: vital:6935 , http://hdl.handle.net/10962/d1011956
Description: This study reports the effects of grazing by the territorial limpet Patella longicosta on the productivity of the encrusting alga Ralfsia verrucosa. Grazing significantly increased algal growth during the first month of the study (August). Simulated grazing by brushing also enhanced productivity. However, the productivity of grazed and ungrazed algae did not differ significantly during the ensuing three months. As the growth of ungrazed plants remained the same throughout the study, the elevated productivity of grazed plants during August was attributed to increased limpet activity. The variation in grazer-induced algal growth was possibly associated with increased feeding when the limpets embark on energetically costly periods of reproduction.
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Date Issued: 1999

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