A preliminary review of the Indo-Pacific Gobiid fishes of the genus Gnatholepis
- Randall, John E, 1924-, Greenfield, David W
- Authors: Randall, John E, 1924- , Greenfield, David W
- Date: 2001
- Language: English
- Type: Text
- Identifier: vital:15022 , http://hdl.handle.net/10962/d1019863 , ISSN 0073-4381 , Ichthyological Bulletin J.L.B. Smith Institute of Ichthyology; No. 69
- Description: The gobiid fish genus Gnatholepis Bleeker is characterised as follows: dorsal-fin rays VI+I,10-12, the spines slender, none filamentous; anal-fin rays I,11-12; pectoral-fin rays 14-19, none free of membrane; pelvic disc with a frenum; scales on body largely ctenoid, 28-31 in longitudinal series; gill-rakers short, 1 + 3-4; anterior interorbital pores 2; sensory papillae on cheek primarily in a pattern of 4 or 5 vertical rows; body moderately elongate, the depth 3.8-5.4 in SL; head and body compressed; dorsal profile of head initially near-vertical, often with a slight anterior protuberance above upper lip; lower lip with a ventral flap on side of jaw; mouth inferior, the gape slightly oblique; teeth anteriorly in jaws in several rows, the outer row in upper jaw as slender well spaced canines (outer row of teeth at front of lower jaw may or may not be caniniform); tongue bilobed; gill opening ending slightly below level of lower edge of pectoral-fin base; caudal fin rounded, usually longer than head; a dark line extending ventrally from eye, sometimes with one or more side branches. Of the 21 nominal Indo-Pacific species that have been described in Gnatholepis, only 5 are recognised as valid. G. anjerensis (Bleeker), for which a neotype is described, occurs from East Africa and the Red Sea to the Hawaiian Islands and French Polynesia [synonyms include G. deltoides (Seale), G. knighti Jordan and Evermann, and G. corlettei (Herre)]. G. cauerensis (Bleeker) is provisionally divided into 4 subspecies, mainly by modal differences in pectoral-ray counts and slight colour variation: G.cauerensis cauerensis from East Africa to the Society Islands (G. scapulostigma Herre and G. inconsequens Whitley are synonyms); G. c. australis from Rarotonga, Cook Islands to the Pitcairn Islands; G. c. hawaiiensis from the Hawaiian Islands; and G. c. pascuensisfrom at Easter Island. G. davaoensis Seale, also provided with a neotype and description, ranges from the Ryukyu Islands to the Solomon Islands, Papua New Guinea, and Indonesia (G. gemmus Herre is a synonym). G. gymnocara, n. sp., is described from 26 specimens from shallow water of Queensland and the Northern Territory, Australia; it is unique in having 12 anal-fin soft-rays, prepectoral scales, no scales on cheek and opercle, median predorsal zone naked or with only a few small scales across its anterior part, and a large black spot on fourth interspinous membrane of dorsal fin in males. Gnatholepis sp., also a new species from northern Australia, will be described by Helen K. Larson; it is distinct in having 10 dorsal soft-rays, 15-17 pectoral-fin rays, no scales on cheek, opercle, median predorsal zone, or prepectoral area; and the last 2 to 4 mid-lateral blotches of the male dark brown to black. The count of pectoral-fin rays is the most useful meristic character to separate the species and subspecies of Gnatholepis: G. anjerensis, with 14-17 rays, has a strongly modal count of 16; G. cauerensis cauerensis and G. c. hawaiiensis have 16-19 rays (strongly modal 17); G. c. australis has 17-19 rays (modally 18); G. c. pascuensis has 18 or 19 rays, modally 19; G. davaoensis has 15-17 rays, modally 17. , Rhodes University Libraries (Digitisation)
- Full Text:
- Date Issued: 2001
- Authors: Randall, John E, 1924- , Greenfield, David W
- Date: 2001
- Language: English
- Type: Text
- Identifier: vital:15022 , http://hdl.handle.net/10962/d1019863 , ISSN 0073-4381 , Ichthyological Bulletin J.L.B. Smith Institute of Ichthyology; No. 69
- Description: The gobiid fish genus Gnatholepis Bleeker is characterised as follows: dorsal-fin rays VI+I,10-12, the spines slender, none filamentous; anal-fin rays I,11-12; pectoral-fin rays 14-19, none free of membrane; pelvic disc with a frenum; scales on body largely ctenoid, 28-31 in longitudinal series; gill-rakers short, 1 + 3-4; anterior interorbital pores 2; sensory papillae on cheek primarily in a pattern of 4 or 5 vertical rows; body moderately elongate, the depth 3.8-5.4 in SL; head and body compressed; dorsal profile of head initially near-vertical, often with a slight anterior protuberance above upper lip; lower lip with a ventral flap on side of jaw; mouth inferior, the gape slightly oblique; teeth anteriorly in jaws in several rows, the outer row in upper jaw as slender well spaced canines (outer row of teeth at front of lower jaw may or may not be caniniform); tongue bilobed; gill opening ending slightly below level of lower edge of pectoral-fin base; caudal fin rounded, usually longer than head; a dark line extending ventrally from eye, sometimes with one or more side branches. Of the 21 nominal Indo-Pacific species that have been described in Gnatholepis, only 5 are recognised as valid. G. anjerensis (Bleeker), for which a neotype is described, occurs from East Africa and the Red Sea to the Hawaiian Islands and French Polynesia [synonyms include G. deltoides (Seale), G. knighti Jordan and Evermann, and G. corlettei (Herre)]. G. cauerensis (Bleeker) is provisionally divided into 4 subspecies, mainly by modal differences in pectoral-ray counts and slight colour variation: G.cauerensis cauerensis from East Africa to the Society Islands (G. scapulostigma Herre and G. inconsequens Whitley are synonyms); G. c. australis from Rarotonga, Cook Islands to the Pitcairn Islands; G. c. hawaiiensis from the Hawaiian Islands; and G. c. pascuensisfrom at Easter Island. G. davaoensis Seale, also provided with a neotype and description, ranges from the Ryukyu Islands to the Solomon Islands, Papua New Guinea, and Indonesia (G. gemmus Herre is a synonym). G. gymnocara, n. sp., is described from 26 specimens from shallow water of Queensland and the Northern Territory, Australia; it is unique in having 12 anal-fin soft-rays, prepectoral scales, no scales on cheek and opercle, median predorsal zone naked or with only a few small scales across its anterior part, and a large black spot on fourth interspinous membrane of dorsal fin in males. Gnatholepis sp., also a new species from northern Australia, will be described by Helen K. Larson; it is distinct in having 10 dorsal soft-rays, 15-17 pectoral-fin rays, no scales on cheek, opercle, median predorsal zone, or prepectoral area; and the last 2 to 4 mid-lateral blotches of the male dark brown to black. The count of pectoral-fin rays is the most useful meristic character to separate the species and subspecies of Gnatholepis: G. anjerensis, with 14-17 rays, has a strongly modal count of 16; G. cauerensis cauerensis and G. c. hawaiiensis have 16-19 rays (strongly modal 17); G. c. australis has 17-19 rays (modally 18); G. c. pascuensis has 18 or 19 rays, modally 19; G. davaoensis has 15-17 rays, modally 17. , Rhodes University Libraries (Digitisation)
- Full Text:
- Date Issued: 2001
A survey of selected Eastern Cape estuaries with particular reference to the ichthyofauna
- Vorwerk, Paul D, Whitfield, Alan K, Cowley, Paul D, Paterson, Angus W
- Authors: Vorwerk, Paul D , Whitfield, Alan K , Cowley, Paul D , Paterson, Angus W
- Date: 2001
- Language: English
- Type: Text
- Identifier: vital:15032 , http://hdl.handle.net/10962/d1019908 , ISSN 0073-4381 , Ichthyological Bulletin J.L.B. Smith Institute of Ichthyology; No. 72
- Description: The physical environment and ichthyofauna of 10 estuaries, the East Kleinemonde, Klein Palmiet, Great Fish, Mtati, Mpekweni, Mgwalana, Bira, Gqutywa, Ngculura and Keiskamma, was sampled over a four year period. The ichthyofauna of each estuary was sampled once during winter and once during summer in that period, with the physical environment being sampled on two occasions per season. This investigation provides baseline ichthyofaunal and physical information for these estuaries, the majority of which have never been studied before. The fish data presented for these systems includes species composition, relative abundance, richness and diversity, longitudinal distributions and length frequency data. Descriptions of the physical environment within each estuary are also presented. The permanently open estuaries had a greater proportion of marine and freshwater species relative to the temporarily open/closed systems which were dominated by marine species dependent on estuaries and estuarine resident species. The permanently open estuaries had a higher Margalef's species richness index relative to the temporarily open/closed systems but the Shannon-Wiener species diversity index did not follow any discernible trend. There were minor longitudinal distribution trends when analysing the community as a whole, with patterns for individual species being more pronounced. The length frequency histograms for estuarine resident species differed between estuary types, while those for the marine migrant species were similar in the different estuary types.\ , Rhodes University Libraries (Digitisation)
- Full Text:
- Date Issued: 2001
- Authors: Vorwerk, Paul D , Whitfield, Alan K , Cowley, Paul D , Paterson, Angus W
- Date: 2001
- Language: English
- Type: Text
- Identifier: vital:15032 , http://hdl.handle.net/10962/d1019908 , ISSN 0073-4381 , Ichthyological Bulletin J.L.B. Smith Institute of Ichthyology; No. 72
- Description: The physical environment and ichthyofauna of 10 estuaries, the East Kleinemonde, Klein Palmiet, Great Fish, Mtati, Mpekweni, Mgwalana, Bira, Gqutywa, Ngculura and Keiskamma, was sampled over a four year period. The ichthyofauna of each estuary was sampled once during winter and once during summer in that period, with the physical environment being sampled on two occasions per season. This investigation provides baseline ichthyofaunal and physical information for these estuaries, the majority of which have never been studied before. The fish data presented for these systems includes species composition, relative abundance, richness and diversity, longitudinal distributions and length frequency data. Descriptions of the physical environment within each estuary are also presented. The permanently open estuaries had a greater proportion of marine and freshwater species relative to the temporarily open/closed systems which were dominated by marine species dependent on estuaries and estuarine resident species. The permanently open estuaries had a higher Margalef's species richness index relative to the temporarily open/closed systems but the Shannon-Wiener species diversity index did not follow any discernible trend. There were minor longitudinal distribution trends when analysing the community as a whole, with patterns for individual species being more pronounced. The length frequency histograms for estuarine resident species differed between estuary types, while those for the marine migrant species were similar in the different estuary types.\ , Rhodes University Libraries (Digitisation)
- Full Text:
- Date Issued: 2001
Activate: 2001 - Tri-varsity 2001
- Date: 2001
- Subjects: Grahamstown -- Newspapers , Journalism, Students -- South Africa , Rhodes University -- Activate , Rhodes University -- Students , Student newspapers and periodicals -- South Africa
- Language: English
- Type: Text
- Identifier: vital:14371 , http://hdl.handle.net/10962/d1019243
- Description: Activate is the Independent Student Newspaper of Rhodes University. Located in Grahamstown, Activate was established in 1947 as Rhodeo, and during apartheid became an active part of the struggle for freedom of expression as part of the now defunct South African Student Press Union. Currently Activate is committed to informing Rhodes University students, staff and community members about relevant issues, mainly on campus. These issues range from hard news to more creative journalism. While Activate acts as a news source, one of its main objectives it to be accessible as a training ground for student journalists. The newspaper is run entirely by the students and is published twice a term. Activate is a free newspaper which receives an annual grant from the Rhodes University Student Representative Council, however, majority of its revenue is generated through advertising.
- Full Text:
- Date Issued: 2001
- Date: 2001
- Subjects: Grahamstown -- Newspapers , Journalism, Students -- South Africa , Rhodes University -- Activate , Rhodes University -- Students , Student newspapers and periodicals -- South Africa
- Language: English
- Type: Text
- Identifier: vital:14371 , http://hdl.handle.net/10962/d1019243
- Description: Activate is the Independent Student Newspaper of Rhodes University. Located in Grahamstown, Activate was established in 1947 as Rhodeo, and during apartheid became an active part of the struggle for freedom of expression as part of the now defunct South African Student Press Union. Currently Activate is committed to informing Rhodes University students, staff and community members about relevant issues, mainly on campus. These issues range from hard news to more creative journalism. While Activate acts as a news source, one of its main objectives it to be accessible as a training ground for student journalists. The newspaper is run entirely by the students and is published twice a term. Activate is a free newspaper which receives an annual grant from the Rhodes University Student Representative Council, however, majority of its revenue is generated through advertising.
- Full Text:
- Date Issued: 2001
Ichthyofaunal characteristics of a typical temporarily open/closed estuary on the southeast coast of South Africa
- Cowley, Paul D, Heemstra, Phillip C
- Authors: Cowley, Paul D , Heemstra, Phillip C
- Date: 2001
- Subjects: Estuarine fishes -- Ecology -- Indian Ocean , Estuarine ecology -- South Africa , Fish communities -- South Africa , Fish communities -- Indian Ocean
- Language: English
- Type: Text
- Identifier: vital:15021 , http://hdl.handle.net/10962/d1019862 , ISSN 0073-4381 , Ichthyological Bulletin J.L.B. Smith Institute of Ichthyology; No. 71
- Description: The present study was undertaken to describe the species composition, size composition and distribution of the fish fauna associated with the temporarily open/closed East Kleinemonde Estuary on the southeast coast of South Africa. Data collected on the estuary mouth condition from March 1993 to August 1997 indicated that this system was predominantly closed, while open mouth conditions were unseasonal and prevailed for only a short duration following periods of high rainfall. Fishes were sampled throughout the estuary between April 1993 and January 1997 using seine and gill nets. A total of 30 species belonging to 17 families were recorded, including the critically endangered estuarine pipefish Syngnathus watermeyeri. Besides the estuarine pipefish, an additional five species capable of completing their life cycle within the estuary were recorded. The ichthyofaunal community was dominated by 18 marine-spawning species with varying degrees of dependence on estuaries as nursery areas. The marine species that are not dependent on estuaries as nursery areas were represented by three species, while the euryhaline freshwater species, obligate catadromous species and facultative catadromous species were each represented by one species. The dominant members of the estuarine-spawning group were well represented by all post-larval life-history stages, whereas the mean size of each marine-spawning species indicated that juvenile size classes dominated this group. Classification and ordination of both the small- and large-mesh seine net fish assemblages revealed a high degree of similarity throughout the estuary, with the exception of a distinct grouping associated with sandy substrata in the lower reaches of the system. Catch per unit effort (CPUE) data provided evidence of spatial segregation by several species as well as within some families (e.g. Gobiidae). , Rhodes University Libraries (Digitisation)
- Full Text:
- Date Issued: 2001
- Authors: Cowley, Paul D , Heemstra, Phillip C
- Date: 2001
- Subjects: Estuarine fishes -- Ecology -- Indian Ocean , Estuarine ecology -- South Africa , Fish communities -- South Africa , Fish communities -- Indian Ocean
- Language: English
- Type: Text
- Identifier: vital:15021 , http://hdl.handle.net/10962/d1019862 , ISSN 0073-4381 , Ichthyological Bulletin J.L.B. Smith Institute of Ichthyology; No. 71
- Description: The present study was undertaken to describe the species composition, size composition and distribution of the fish fauna associated with the temporarily open/closed East Kleinemonde Estuary on the southeast coast of South Africa. Data collected on the estuary mouth condition from March 1993 to August 1997 indicated that this system was predominantly closed, while open mouth conditions were unseasonal and prevailed for only a short duration following periods of high rainfall. Fishes were sampled throughout the estuary between April 1993 and January 1997 using seine and gill nets. A total of 30 species belonging to 17 families were recorded, including the critically endangered estuarine pipefish Syngnathus watermeyeri. Besides the estuarine pipefish, an additional five species capable of completing their life cycle within the estuary were recorded. The ichthyofaunal community was dominated by 18 marine-spawning species with varying degrees of dependence on estuaries as nursery areas. The marine species that are not dependent on estuaries as nursery areas were represented by three species, while the euryhaline freshwater species, obligate catadromous species and facultative catadromous species were each represented by one species. The dominant members of the estuarine-spawning group were well represented by all post-larval life-history stages, whereas the mean size of each marine-spawning species indicated that juvenile size classes dominated this group. Classification and ordination of both the small- and large-mesh seine net fish assemblages revealed a high degree of similarity throughout the estuary, with the exception of a distinct grouping associated with sandy substrata in the lower reaches of the system. Catch per unit effort (CPUE) data provided evidence of spatial segregation by several species as well as within some families (e.g. Gobiidae). , Rhodes University Libraries (Digitisation)
- Full Text:
- Date Issued: 2001
It's the training that did it: a primer for media trainers to assess their impact
- Authors: Berger, Guy
- Date: 2001
- Language: English
- Type: Text
- Identifier: vital:536 , http://hdl.handle.net/10962/d1008555
- Description: To improve journalism, media trainers need information about what’s working and what needs work in the courses they deliver. This means assessing the impact of this training – as it affects attitudes, information, skills and results in the workplace. To isolate the role that training plays, research and evaluation have to take place long before a course begins and continue till long after. This booklet explains the complexities involved, and it provides the tools for trainers to devise usable strategies to assess the impact of their work. The author critically draws from extensive management training literature, and produces a revised theory that he applies to the unique enterprise of journalism training and its assessment.
- Full Text:
- Date Issued: 2001
- Authors: Berger, Guy
- Date: 2001
- Language: English
- Type: Text
- Identifier: vital:536 , http://hdl.handle.net/10962/d1008555
- Description: To improve journalism, media trainers need information about what’s working and what needs work in the courses they deliver. This means assessing the impact of this training – as it affects attitudes, information, skills and results in the workplace. To isolate the role that training plays, research and evaluation have to take place long before a course begins and continue till long after. This booklet explains the complexities involved, and it provides the tools for trainers to devise usable strategies to assess the impact of their work. The author critically draws from extensive management training literature, and produces a revised theory that he applies to the unique enterprise of journalism training and its assessment.
- Full Text:
- Date Issued: 2001
Review of the deep-sea anglerfishes (Lophiiformes: Ceratioidei) of southern Africa
- Anderson, M Eric, Leslie, Robin W
- Authors: Anderson, M Eric , Leslie, Robin W
- Date: 2001
- Language: English
- Type: Text
- Identifier: vital:15029 , http://hdl.handle.net/10962/d1019903 , ISSN 0073-4381 , Ichthyological Bulletin of the J.L.B. Smith Institute of Ichthyology; No. 70
- Description: Deep-sea anglerfishes (Lophiiformes, Ceratioidei) of the familes Caulophrynidae, Melanocetidae, Himantolophidae, Diceratiidae, Oneirodidae, Thaumatichthyidae, Centrophrynidae, Ceratiidae, Gigantactinidae and Linophrynidae from southern Africa are reviewed since the publication of the book Smiths’ Sea Fishes (1986, 1991). Twenty-three new records of ceratioid anglerfishes are reported for the region, bringing the total to 32. No new taxa are described. The faunal area for southern African deep-sea fishes is expanded from that of Smiths’ Sea Fishes in order to include several literature records and recognize the broad distributions of these fishes through the deep-pelagic Atlantic/Indo-Pacific transit zone. Keys to all families, genera and species, as well as descriptions of all southern African specimens, are provided. The bulk of this material was collected during research cruises of South Africa’s RS AFRICANA and MEIRING NAUDE. , Rhodes University Libraries (Digitisation)
- Full Text:
- Date Issued: 2001
- Authors: Anderson, M Eric , Leslie, Robin W
- Date: 2001
- Language: English
- Type: Text
- Identifier: vital:15029 , http://hdl.handle.net/10962/d1019903 , ISSN 0073-4381 , Ichthyological Bulletin of the J.L.B. Smith Institute of Ichthyology; No. 70
- Description: Deep-sea anglerfishes (Lophiiformes, Ceratioidei) of the familes Caulophrynidae, Melanocetidae, Himantolophidae, Diceratiidae, Oneirodidae, Thaumatichthyidae, Centrophrynidae, Ceratiidae, Gigantactinidae and Linophrynidae from southern Africa are reviewed since the publication of the book Smiths’ Sea Fishes (1986, 1991). Twenty-three new records of ceratioid anglerfishes are reported for the region, bringing the total to 32. No new taxa are described. The faunal area for southern African deep-sea fishes is expanded from that of Smiths’ Sea Fishes in order to include several literature records and recognize the broad distributions of these fishes through the deep-pelagic Atlantic/Indo-Pacific transit zone. Keys to all families, genera and species, as well as descriptions of all southern African specimens, are provided. The bulk of this material was collected during research cruises of South Africa’s RS AFRICANA and MEIRING NAUDE. , Rhodes University Libraries (Digitisation)
- Full Text:
- Date Issued: 2001
Rhodes University Research Report 2001
- Authors: Rhodes University
- Date: 2001
- Language: English
- Type: Text
- Identifier: vital:556 , http://hdl.handle.net/10962/d1011936
- Description: [From Introduction] This is the first formal research report published by Rhodes University. The reason research reports have not been published previously is that the annual Council and Senate report was largely a research report and it was unnecessary to duplicate this report. However, the required format of the University’s Annual Report has changed considerably from 2001 and no longer includes detailed information on the research outputs. I would like to add my congratulations to that of the Vice-Chancellor to all the staff and postgraduate students for their research efforts in 2001. Rhodes continues to be the leading Institution in South Africa in terms of research outputs relative to its size (determined by Government subsidy income). This is very significant and it is critical that this prominence be maintained, particularly in view of the recent restructuring of Higher Education in South Africa and the greater emphasis likely to be placed on research productivity by the revised funding formula. Research at Rhodes is actively supported by the University’s Management and a variety of internal support services including, amongst others, the Library, Information Technology, laboratory and equipment support services and the entire academic, administrative and financial infrastructure. Without this support it would be impossible to conduct research. Special thanks must go to the staff in the Research Office for all their efforts in promoting research and in particular to Moira Pogrund who complied the majority of this report.
- Full Text:
- Date Issued: 2001
- Authors: Rhodes University
- Date: 2001
- Language: English
- Type: Text
- Identifier: vital:556 , http://hdl.handle.net/10962/d1011936
- Description: [From Introduction] This is the first formal research report published by Rhodes University. The reason research reports have not been published previously is that the annual Council and Senate report was largely a research report and it was unnecessary to duplicate this report. However, the required format of the University’s Annual Report has changed considerably from 2001 and no longer includes detailed information on the research outputs. I would like to add my congratulations to that of the Vice-Chancellor to all the staff and postgraduate students for their research efforts in 2001. Rhodes continues to be the leading Institution in South Africa in terms of research outputs relative to its size (determined by Government subsidy income). This is very significant and it is critical that this prominence be maintained, particularly in view of the recent restructuring of Higher Education in South Africa and the greater emphasis likely to be placed on research productivity by the revised funding formula. Research at Rhodes is actively supported by the University’s Management and a variety of internal support services including, amongst others, the Library, Information Technology, laboratory and equipment support services and the entire academic, administrative and financial infrastructure. Without this support it would be impossible to conduct research. Special thanks must go to the staff in the Research Office for all their efforts in promoting research and in particular to Moira Pogrund who complied the majority of this report.
- Full Text:
- Date Issued: 2001
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