PubMed Health⌕ Search

Biomedical subjects

J Boomker

Publications and source records attributed to J Boomker.

At least 73 records · Page 4Linked to original sources
PubMed1991

Parasites of South African wildlife. X. Helminths of red duikers, Cephalophus natalensis, in Natal.

The helminths of the following red duikers, Cephalophus natalensis, were examined: 24 from 3 game reserves in Natal and 1 that had originated from Charters Creek, Natal, shortly before it died in the National Zoological Gardens, Pretoria. The 21 animals from Charters Creek harboured 16 nematode species, a nematode genus, 2 cestode species and paramphistomes. The 2 red duiker from Fanies Island harboured 4 nematode species, 3 nematode genera and 1 cestode species, while the single red duiker from Ndumu was infected with 3 nematode species. The antelope from the National Zoological Gardens, Pretoria, harboured 2 nematode species, 1 nematode genus and 1 cestode species. A race of Cooperia rotundispiculum was the most abundant nematode in duikers from all the reserves. Hyostrongylus rubidus is a new parasite record in South Africa and in red duikers, and was present in 80% of the antelope. Although primarily a parasite of swine, Hyostrongylus rubidus should be regarded as a definitive parasite of these antelope.

Animals↗
PubMed1991

Parasites of South African wildlife. VII. Helminths of suni, Neotragus moschatus, in Natal.

The helminths of 4 suni, Neotragus moschatus, from the Tembe National Elephant Park, KwaZulu, Natal, were collected, counted and identified. Cooperia hungi, a race of Cooperia rotundispiculum, Haemonchus vegliai, Setaria cornuta, a Skrjabinema sp., Strongyloides papillosus, Trichostrongylus anomalus and Trichostrongylus deflexus are new parasite records for suni in Africa. Megacooperia woodfordi was recovered for the first time from South African antelope.

Animals↗
PubMed1990

Internal parasites of giraffes (Giraffa camelopardalis angolensis) from Etosha National Park, Namibia.

During three seasonal periods, parasitological samples were collected from six giraffes (Giraffa camelopardalis angolensis) in the Etosha National Park, Namibia. The helminths recovered included Parabronema skrjabini, Skrjabinema spp., Haemonchus mitchelli and Echinococcus sp. larvae; Cytauxzoon sp. was the only hematozoan found. The low mean abundances of all helminths which ranged from 18 to 531 may be attributed to the low rainfall of this region or because the giraffe is not a preferred host for these species of helminths.

Animals↗
PubMed1990

Parasites of South African wildlife. V. A. description of the males of Oesophagostomum mocambiquei Ortlepp, 1964 from warthogs, Phacochoerus aethiopicus (Pallas, 1766).

Oesophagostomum mocambiquei Ortlepp, 1964 was described from 9 females recovered from a warthog, Phacochoerus aethiopicus (Pallas, 1766), from northern Mozambique. Large numbers of O. mocambiquei were recovered during subsequent surveys of the parasites of warthogs from the Kruger National Park and the Hoedspruit Nature Reserve. The males, which have not yet been described, resemble those of Oesophagostomum santosdiasi Ortlepp, 1964 in the principal measurements. They can, however, be differentiated by the shape of the mouth capsule, which is round in O. mocambiquei and oval in O. santosdiasi. A simplified key for the identification of the Oesophagostomum species that occur in warthogs in South Africa and Namibia is provided and the differences between them tabulated. The names Oesophagostomum moçambiquei and Oesophagostomum santos-diasi are corrected to O. mocambiquei and O. santosdiasi respectively, since diacritic marks are not allowed under the Code of International Zoological Nomenclature.

Animals↗
PubMed1989

Parasites of South African wildlife. III. Helminths of common reedbuck, Redunca arundinum, in Natal.

Twenty-six common reedbuck, Redunca arundinum, were shot in pairs at monthly intervals for 13 consecutive months in the Himeville region of Natal. Ten nematode species, 2 cestodes and 1 trematode were recovered from these animals. Cooperia yoshidai was both the most numerous and most prevalent worm and peak burdens occurred during summer. Thirty-one reedbuck, killed at different intervals in various localities within the St. Lucia Reserve, harboured between 4 and 11 nematode species, 1 cestode and 1 trematode. With the exception of 4 reedbuck shot during January 1987, in which Haemonchus contortus was the most abundant worm, C. yoshidai was again both the most abundant and most prevalent worm. Peak burdens of this nematode occurred during autumn to spring. The helminths of 5 impala, Aepyceros melampus, also shot in the St. Lucia Reserve were examined. Some of the worm species of impala were also found in the reedbuck from the same locality and the helminths of the 2 antelope species are compared. An amended list, which includes several new records of the parasites of common reedbuck in South Africa is provided.

Animals↗
PubMed1989

Parasites of domestic and wild animals in South Africa. XXIV. Arthropod parasites of bushbuck and common duiker in the Weza State Forest, Natal.

One bushbuck, Tragelaphus scriptus, and 1 common duiker, Sylvicapra grimmia, were shot each month from May 1983 to May 1984 in the Weza State Forest, Natal, i.e. a total of 13 animals of each species. The bushbuck were infested with 8 ixodid tick species, 2 louse species and a louse-fly species. The common duiker harboured 7 tick species and 2 louse species. Ticks of the genus Ixodes were the most numerous and prevalent on both antelope species, but no pattern of seasonal abundance was evident. Although only small numbers were recovered, adult Haemaphysalis aciculifer were present from September to February, nymphs of Rhipicephalus appendiculatus from May to September, and adult Rhipicephalus lunulatus from December to March. The louse-fly, Lipoptena paradoxa, was recovered from some of the bushbuck from October to May.

Animals↗
PubMed1989

Parasites of South African wildlife. IV. Helminths of kudu, Tragelaphus strepsiceros, in the Kruger National Park.

During ongoing surveys of parasites of wild animals in the Kruger National Park, a total of 96 kudu. Tragelaphus strepsiceros, were culled in the southern part of the park at monthly intervals from April 1981 to March 1983. A single kudu was shot in the same area in November 1983. Two more kudu were obtained from Pafuri in the northern part of the Park during October 1981 and another from near Satara in the central part of the Park during October 1982. The helminths of all the kudu were collected and 2 trematode, 4 cestode and 18 nematode species recovered. Amongst the helminths recovered, Agriostomum gorgonis, Cooperia fuelleborni, Cooperia hungi, Cooperia yoshidai, Impalaia tuberculata, a Parabronema sp., a Setaria sp., Strongyloides papillosus, Trichostrongylus falculatus, Schistosoma mattheei, an Avitellina sp., Moniezia benedeni, and Echinococcus sp. larvae appear to be new records for kudu. Haemonchus vegliai, which has been considered a rare nematode, was present in many animals. An amended list of the parasites of kudu is included, and the seasonal abundance of the major nematode species discussed and graphically illustrated.

Animals↗
PubMed1989

Helminth parasites of grysbok, common duikers and Angora and Boer goats in the Valley Bushveld in the eastern Cape Province.

Helminth parasites were collected from 13 grysbok, Raphicerus melanotis, 12 common duikers, Sylvicapra grimmia, 24 Angora goats and 24 Boer goats killed on a farm in Valley Bushveld in the eastern Cape Province. Nematodes belonging to 9 species and a further 2 genera and cestodes belonging to 1 species and a further genus were recovered from the grysbok. Of these, worms of the genus Skrjabinema, Trichostrongylus rugatus, Trichostrongylus pietersei and Nematodirus spathiger were the most prevalent and the most numerous. An amended list of the helminths of grysbok is included. Seven nematodes, identified to species and 1 identified to genus were recovered from the common duikers. N. spathiger and Setaria scalprum were the most prevalent, while N. spathiger and Trichostrongylus axei were the most abundant. The Angora goats were infested with at least 10 nematode species and 2 cestodes and the Boer goats with at least 14 nematode species. With the exception of Trichostrongylus pietersei, the Boer goats harboured more nematodes of each species than did the Angora goats. Nematodirus spp. and worms of the genus Skrjabinema were most numerous in Angora goats, and Nematodirus spp. and Teladorsagia circumcincta in the Boer goats. No clear pattern of seasonal abundance was evident for any of the helmith species in the various hosts.

Animals↗
PubMed1988

Hepatic lesions associated with Cooperioides hepaticae (Nematoda: Trichostrongyloidea) infection in impala (Aepyceros melampus) of the Kruger National Park.

Intrahepatic biliary lesions were observed in two of 12 lambs, seven of 12 yearlings and 10 of 25 adult impala (Aepyceros melampus) surveyed in the Kruger National Park, Republic of South Africa. Lesions were associated with the nematode Cooperioides hepaticae, a trichostrongyloid parasite that inhabits the bile ducts of impala, and ranged from a mild chronic-eosinophilic cholangitis to foci of florid hyperplastic cholangitis with duct ectasia. The latter almost always contained viable worms and, after the worms died, the lesions appeared as foreign-body granulomas. Infection was acquired early in life; severe lesions were seen most frequently in yearlings. Adults were less severely infected, which suggested an acquired immunity. Although the incidence of infection was high, cooperiiasis did not appear to be a serious herd-health problem at the time of this study.

Animals↗
PubMed1988

Parasites of domestic and wild animals in South Africa. XXIII. Helminth and arthropod parasites of warthogs, Phacochoerus aethiopicus, in the eastern Transvaal Lowveld.

A total of 69 warthogs, Phacochoerus aethiopicus, were collected from 4 localities within the Kruger National Park, eastern Transvaal Lowveld. These animals harboured 16 nematode species, 2 trematodes, 1 or 2 species of adult cestodes and the larval stages of 4 cestodes. No pattern of seasonal abundance could be determined for any of the helminths. The warthogs were also infested with 3 flea species, 1 louse species, 8 ixodid tick species, 1 argasid tick and the nymphae of a pentastomid. The seasonal abundance of fleas of the genus Echidnophaga, of the sucking louse Haematopinus phacochoeri and the ixodid ticks Amblyomma hebraeum, Rhipicephalus appendiculatus, Rhipicephalus simus and Rhipicephalus zambeziensis was determined.

Animals↗
PubMed1988

Parasites of South African wildlife. II. Helminths of kudu, tragelaphus strepsiceros, from South West Africa/Namibia.

A total of 23 kudu, Tragelaphus strepsiceros, were shot at 2-month intervals from June 1983 to April 1984 in the Etosha Game Reserve in the north of South West Africa/Namibia. The parasite survey conducted on these animals yielded 2 cestode and 12 nematode species. Haemonchus vegliai and Cooperia neitzi were the most prevalent nematodes and occurred in 13 animals each, followed by Cooperia acutispiculum and an Onchocerca sp. (9 animals each). The remaining nematodes were present in 4 (17%) or fewer of the antelope. C. neitzi was the most numerous nematode, a total of 3,564 being recovered from all the antelope, followed by C. acutispiculum (2,552) and H. vegliai (1,050). Individual total worm burdens varied from 4-1,326 with 2 kudu harbouring no worms. The mean burden of 399 worms was considered negligible. A single kudu was shot in the Namib-Naukluft Park in the south of the country. This animal harboured no parasites.

Animals↗
PubMed1988

Arthropod parasites of common reedbuck, Redunca arundinum, in Natal.

Twenty-five common reedbuck, Redunca arundinum, from the Himeville region, 21 from the Eastern Shores Nature Reserve, 4 from the Charter's Creek Nature Reserve and 2 from the St Lucia Game Park, Natal were examined for arthropod parasites. The reedbuck from Himeville were infested with 4 ixodid tick species, those from the Eastern Shores with 7 species and those from Charter's Creek and St Lucia with 6 species. Rhipicephalus evertsi evertsi was the only tick common to the 4 localities. The lice Damalinia reduncae and Linognathus fahrenholzi were present on the reedbuck from each locality. In addition 3 red duiker, Cephalophus natalensis, and 2 bushbuck, Tragelaphus scriptus, from the Charter's Creek Nature Reserve plus 2 impala, Aepyceros melampus, from the St Lucia Game Park were examined for ixodid ticks. The red duiker were infested with 3 tick species and the bushbuck and impala with 4 each.

Animals↗
PubMed1987

Parasites of South African wildlife. I. Helminths of bushbuck, Tragelaphus scriptus, and grey duiker, Sylvicapra grimmia, from the Weza State Forest, Natal.

Thirteen bushbuck, Tragelaphus scriptus, and 13 grey duikers, Sylvicapra grimmia, were culled in the Weza State Forest, Natal, from May 1983-May 1984. The maximum number of worms recovered from a single bushbuck was 393. Of the total number of worms recovered from all the bushbuck, Paracooperia devossi were the most numerous, followed by Ostertagia harrisi, a Cooperia sp. and Haemonchus vegliai. P. devossi and O. harrisi were more numerous during winter and the Cooperia sp. more numerous during summer. Grey duiker harboured from 0-230 worms. The same Cooperia sp. as was recovered from the bushbuck and Trichostrongylus axei were the most numerous. The larvae of Taenia hydatigena were recovered from 5 duikers. The Cooperia sp. was more numerous during summer and T. axei during winter, the remaining worms showing no seasonal pattern of abundance. Amended lists of the helminth parasites found in these antelope in the Republic of South Africa are provided.

Animals↗
PubMed1986

The helminth parasites of various artiodactylids from some South African nature reserves.

The helminth species composition and helminth burdens of 4 grey duikers, 12 bushbuck, 2 nyala, 2 giraffe, a steenbok, an oribi, a waterbuck and a tsessebe from the Kruger National Park (KNP); of a steenbok and a greater kudu from the farm Riekerts Laager, Transvaal; of a single blue duiker from the Tsitsikama Forest National Park, and of a blue wildebeest, a red hartebeest, a gemsbok and 2 springbok from the Kalahari Gemsbok National Park (KGNP) were collected, counted and identified. New parasite records are: Agriostomum equidentatum from the gemsbok, Cooperia neitzi from the bushbuck, Cooperia sp. from the gemsbok and the red hartebeest, Cooperia yoshidai from the waterbuck and the tsessebe, Dictyocaulus viviparus from the bushbuck, Haemonchus bedfordi from the waterbuck, Haemonchus contortus from the gemsbok, Haemonchus krugeri from the steenbok from the KNP, Impalaia nudicollis from the gemsbok and the red hartebeest, Impalaia tuberculata from the oribi and the waterbuck, Impalaia spp. from the kudu, Longistrongylus meyeri from the steenbok from Riekerts Laager and the gemsbok, Longistrongylus sabie from the steenbok from the KNP, Longistrongylus schrenki from the tsessebe, Parabronema sp. from the tsessebe and the red hartebeest, Paracooperia serrata from the gemsbok and the steenbok from the KGNP, Pneumostrongylus calcaratus from the bushbuck, Strongyloides sp. from the gemsbok, Trichostrongylus sp. from the gemsbok, the red hartebeest and the steenbok from the KGNP, Trichostrongylus axei from the blue duiker, Trichostrongylus falculatus from the bushbuck and the oribi, Trichostrongylus instabilis from the bushbuck, the steenbok from the KNP and the oribi and Trichostrongylus thomasi from the grey duikers and tsessebe. Host specificity of the parasites was not marked and crossinfestation was common. This was not true for the giraffe, since none of the helminths of these animals were found in the antelope and vice versa.

Animals↗
PubMed1986

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.

Animals↗
PubMed1986

Trichostrongylus auriculatus n. sp. (Nematoda: Trichostrongylidae) from the steenbok, Raphicerus campestris (Thunberg, 1811).

During a pilot survey of the parasites of some artiodactylids in the Kalahari Gemsbok National Park a new species of Trichostrongylus Looss, 1905 was recovered from the small intestine of a steenbok, Raphicerus campestris (Thunberg, 1811), a gemsbok, Oryx gazella (Linnaeus, 1758), and a red hartebeest, Alcelaphus buselaphus (Pallas, 1766). The male spicules were 0,120-0,148 mm long and an ear-shaped protuberance was present on the shaft of the left spicule. The presence of only a single protuberance is characteristic of the species.

Animals↗
PubMed1986

Trichostrongylus angistris n. sp. from the red duiker Cephalophus natalensis A. Smith, 1834 and a redescription of Trichostrongylus minor Mönnig, 1932.

Trichostrongylus angistris n. sp. was found in the abomasa of 13 red duiker Cephalophus natalensis A. Smith, 1834, culled in the Charter's Creek Nature Reserve, Natal. The species is closely related to Trichostrongylus minor Mönnig, 1932 and can be differentiated from it by the shorter dorsal ray and the different shape of the gubernaculum and spicules. The shoes of the spicules of T. minor are set at an angle to the long axis, while those of T. angistris are curved. Upon re-examination, the Trichostrongylus spp., tentatively identified as Trichostrongylus capricola Ransom, 1907 and Trichostrongylus vitrinus Looss, 1905, proved to be T. angistris. In this paper, T. angistris is compared with T. capricola and T. vitrinus and T. minor is redescribed.

Animals↗