Parasites of South African wildlife. XI. Description of a new race of Cooperia rotundispiculum Gibbons and Khalil, 1980

During surveys of the helminths of South African wildlife, a Cooperia sp. that closely resembles Cooperia rotundispiculum Gibbons & Khalil, 1980, was recovered from several antelope species. This nematode has spicules 0,140-0,248mm long and has 18-20 longitudinal cuticular ridges, whereas typical C. rotundispiculum has spicules 0,179-226 mm long and has 14 ridges. In view of the few differences between the 2 helminths, the Cooperia sp. is described here as a race of C. rotundispiculum.The articles have been scanned in colour with a HP Scanjet 5590; 600dpi. Adobe Acrobat XI Pro was used to OCR the text and also for the merging and conversion to the final presentation PDF-format.Foundation for Research Development.mn201

The haemocytology and histology of the haemopoietic organs of South African freshwater fish. III. The leucocytes, plasma cells and macrophages of Clarias gariepinus and Sarotherodon mossambicus

The various leucocytes, plasma cells and macrophages are described and illustrated. Eosinophils and basophils are lacking in Clarias gariepinus but present in Sarotherodon mossambicus. The leucocytes of C. gariepinus resemble those found in mammals, as do the plasma cells and macrophages of both species. A possible mechanism for their formation is postulated.The articles have been scanned in colour with a HP Scanjet 5590; 600dpi. Adobe Acrobat XI Pro was used to OCR the text and also for the merging and conversion to the final presentation PDF-format

A revision of the genus Impalaia Mönnig, 1924

A revision of the genus lmpalaia Monnig, 1924 forms the subject of this report. Besides the type species, lmpalaia tuberculata Monnig, 1924, there are 2 valid species, viz., I. nudicollis Monnig, 1931and I. okapiae (Van den Berghe, 1937). I. tuberculata longispiculata (Wetzel & Fortmeyer, 1960), I. somaliensis (Crovieri, 1929) and I. aegyptiaca Soliman, 1956 are synonymous with I. tuberculata. I. taurotragi (LeRoux, 1936) appears to be an aberrant form of/. nudicollis. A parasite/host checklist is included.The articles have been scanned in colour with a HP Scanjet 5590; 300dpi. Adobe Acrobat XI Pro was used to OCR the text and also for the merging and conversion to the final presentation PDF-format

Parasites of South African freshwater fish. VII. Nematodes of some scaled fishes from the Hartbeespoort Dam, Transvaal

The nematode parasites of 16 large-scaled yellowfish, Barbus marequensis , six silverfish, Barbus mattozi, six small-scaled yellowfish , Barbus polylepis, 52 canary kurper, Chetia flaviventris , 11 carp, Cyprinus carpio , 45 Mozambique bream, Oreochromis mossambicus and a single-banded bream, Tilapia sparrmani, caught in the Hartbeespoort Dam, Transvaal, were collected, identified and counted. Contracaecum spp. larvae were recovered from one O. mossambicus, 40 Chetia flaviventris, three Cyprinus carpio, one B. marequensis and five B. mattozi, Rhabdochona esseniae from five B. marequensis, Rhabdochona spp. from one O. mossambicus and four Cyprinus carpio, and unidentified nematode larvae from two O. mossambicus, three Chetia flaviventris, two Cyprinus carpio and from the single T. sparrmani. Burdens in the infected fishes were generally small, and small-scaled yellowfish did not harbour any worms. Only Mozambique bream and canary kurper were caught at regular intervals, but even in these species no pattern of seasonal prevalence of the nematodes was evident.The articles have been scanned in colour with a HP Scanjet 5590; 600dpi. Adobe Acrobat XI Pro was used to OCR the text and also for the merging and conversion to the final presentation PDF-format.Council for Scientific and Industrial Research.mn201

Paracooperia horaki n.sp. (Nematoda: Trichostrongylidae) from the nyala Tragelaphus angasi Gray, 1849.

A new species of Paracooperia Travassos, 1935 was found in small numbers in the small intestines of 36 out of 68 nyala Tragelaphus angasi Gray 1849 in the Mkuzi, Ndumu and Umfolozi Game Reserves, Natal. The worms, for which the name Paracooperia horaki is proposed, can be differentiated from the closely related Paracooperia devossi Boomker & Kingsley, 1984 by the absence of ridges on 1 of the branches of the spicules, the slightly longer branches of the tips of the dorsal ray and the large hemispheric knobs on the ends of the spicules. Furthermore, the branch of the spicules that bears the hook-like process is about two thirds the length of the spicule in P. devossi and almost the entire length of the spicule in P. horaki. The ovigerous females of P. horaki have 2 or 3 expanded ridges in front of the vulva that form vulvar flaps. The females without eggs resemble those of P. devossi and have only a single vulvar flap.The articles have been scanned in colour with a HP Scanjet 5590; 600dpi. Adobe Acrobat XI Pro was used to OCR the text and also for the merging and conversion to the final presentation PDF-format

Parasites of South African freshwater fish. II. Redescription of the African species of the genus Phyllodistomum Braun, 1899 (Trematoda: Gorgoderinae) and the description of a new species

During 1980 a survey of the parasites of freshwater fish was conducted in the Sabie and Crocodile Rivers in the southern part of the Kruger National Park, Transvaal. A new species of Phyllodistomum, Braun, 1899, for which the name Phyllodistomum bavuri is proposed, was found in the urinary bladder of many of the catfish, Clarias gariepinus (Burchell, 1822), examined. The new species resembles Phyllodistomum linguale Odhner, 1902 and Phyllodistomum vanderwaali Prudhoe & Hussey, 1977, but may be differentiated from the former species in that the ovary and the vitellaria are smooth, while those of P. linguale are irregularly lobed. The ovary of P. vanderwaali is irregularly lobed while that of P. bavuri never has more than 3 indistinct lobes. In addition, P. bavuri is much larger than P. vanderwaali. P. bavuri is readily differentiated from the other 4 African species of Phyllodistomum, namely, Phyllodistomum spatula (Odhner, 1902), Phyllodistomum spatulaeforme (Odhner, 1902), Phyllodistomum ghanense Thomas, 1958 and Phyllodistomum symmetrorchis Thomas, 1958. For comparative purposes the African species are briefly redescribed and illustrated. P. bavuri occurred throughout the year and their numbers do not appear to fluctuate seasonally in the Kruger National Park.The articles have been scanned in colour with a HP Scanjet 5590; 600dpi. Adobe Acrobat XI Pro was used to OCR the text and also for the merging and conversion to the final presentation PDF-format.University of Pretoria.am201

The haemocytology and histology of the haemopoietic organs of South African freshwater fish. IV. Ultrastructure of some cells of Clarias gariepinus and Sarotherodon mossambicus

This paper describes the ultrastructure of several cells found in the blood and haemopoietic tissues of the catfish (Clarias gariepinus) and the Mozambique bream (Sarotherodon mossambicus). The cells are haemocytoblasts, small lymphoid haemoblasts, thrombocytes, monocytes, lymphocytes, developing and mature neutrophilic granulocytes, plasma cells and macrophages. The various organelles normally found in mammalian haemocytes, plasma cells and macrophages were observed in those of fish. With the exception of the mature erythrocytes, which resemble the normoblasts of mammals, the various cells show distinct similarities to those of other fish species as well as of mammals.The articles have been scanned in colour with a HP Scanjet 5590; 600dpi. Adobe Acrobat XI Pro was used to OCR the text and also for the merging and conversion to the final presentation PDF-format

Parasites of South African freshwater fish. I. Some nematodes of the catfish [Clarias gariepinus (Burchell, 1822)] from the Hartbeespoort Dam

A seasonal study of the parasites of fish in the Hartbeespoort Dam was undertaken in 1979. This paper deals with 4 nematode species recovered from catfish, namely, Paracamallanus cyathopharynx (Baylis, 1923), Procamallanus laeviconchus (Wedl, 1862), Contracaecum sp. and Skrjabinocara sp. Total numbers of parasites recovered are tabulated and their seasonal variation illustrated diagrammatically. Paracamallanus cyathopharynx was recovered from 23 out of 43 catfish examined and Procamallanus laeviconchus from 13, while Contracaecum sp. larvae were present in all the catfish. Skrjabinocara sp. was recovered from 1 catfish only, but it is not regarded as being parasitic in fish, as it was also recovered from 1 out of 4 cormorant examined. Paracamallanus cyathopharynx and Procamallanus laeviconchus are illustrated and the measurements of the Hartbeespoort Dam material compared with those given by various authors who recovered the same parasites from other fish species elsewhere in Africa.The articles have been scanned in colour with a HP Scanjet 5590; 600dpi. Adobe Acrobat XI Pro was used to OCR the text and also for the merging and conversion to the final presentation PDF-format

Parasites of South African freshwater fish. V. Description of two new species of the genus Spinitectus Fourment, 1883 (Nematoda: Cystidicolidae)

Spinitectus petterae n. sp. was recovered from catfish, Clarias gariepinus (Burchell, 1822) and Spinitectus zambezensis n. sp. from squeakers, Synodontis zambezensis Peters, 1852 in the Kruger National Park. The nematodes are easily differentiated from each other in that Spinitectus petterae has an additional pair of papillae on the pseudolabia, the males have considerably longer spicules and a different configuration of the tips of the left spicule, and the vulva of the females is considerably closer to the anus than is the case with Spinitectus zambezensis. The new species differ from Spinitectus allaeri Campana-Rouget, 1961 , Spinitectus mormyri Campana-Rouget, 1961 and Spinitectus thurstonae Ogden, 1967 in having more spines per row in the 1st 2 rows. Despite possible conspecificity with Spinitectus polli Campana-Rouget, 1961 , Spinitectus zambezensis should be regarded as a valid species because of the morphological, geographical and host differences.The articles have been scanned in colour with a HP Scanjet 5590; 600dpi. Adobe Acrobat XI Pro was used to OCR the text and also for the merging and conversion to the final presentation PDF-format.Foundation for Research Development.mn201

Cooperia acutispiculum n. sp. (Nematoda: Trichostrongylidae) from the kudu, Tragelaphus strepsiceros (Pallas, 1766)

A new species of nematode, Cooperia acutispiculum, was collected from the small intestine of 3 out of 4 kudu Tragelaphus strepsiceros (Pallas, 1766) and 2 out of 3 grey duiker, Sylvicapra grimmia (Linnaeus, 1758), culled in the Kruger National Park, Transvaal. The males of this species are unique amongst members of the genus Cooperia in that the spicules are acutely pointed and the lateral branches of the distal part of the dorsal ray are wavy in appearance. The females could not be identified because of simultaneous infection of the type host with Cooperia neitzi (Monnig, 1932).The articles have been scanned in colour with a HP Scanjet 5590; 600dpi. Adobe Acrobat XI Pro was used to OCR the text and also for the merging and conversion to the final presentation PDF-format