46 research outputs found
A record of three cases of human infection in Southern Africa with a common tapeworm of rats
No Abstrac
Pereiraia raphiceri sp. nov. (Nematode : Ascaropsinae) from a steenbuck (Raphicerus campestris Thunberg, 1811)
A new species of ascaropsid nematode, Pereiraia raphiceri, is described from the abomasum of Raphicerus campestris, N.W. Cape. Its chief characteristics are the tubular pharynx with annular thickenings; asymmetrically placed cervical papillae, a short and narrow cervical ala on either side; coiled and alate posterior extremity of the male, presence of four pairs of lateral, stalked, precloacal papillae, two pairs of ventral sessile papillae behind cloaca, and four pairs of minute papillae near tip of tail. Spicules unequal, left 1 · 8 and right 0 · 4 mm long. Vulva in anterior half of body. Eggs oval, smooth, thick-shelled, and fully embryonated when laid.The articles have been scanned in colour with a HP scanjet 5590; 300dpi.
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Preliminary note on the life-history of Gaigeria pachyscelis (Raill. and Henry, 1910), a hookworm of sheep
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Observations on the life-history of Bunostomum trigonocephalum, a hookworm of sheep and goats
1. Eggs passed in the faeces of sheep or goats or obtained from the uteri or gravid females are able to hatch in from 24 to 36 hours under suitable conditions of aeration, temperature and moisture.
2. The larvae have three preparasitic stages each separated by an ecdysis. The cuticle of the second stage is retained as a protective sheath for the third or infective stage which is reached in five to eight days after hatching.
3. Morphologically and biologically the different larvae are practically identical to those of Gaigeria pachyscelis.
4. Infection of the host takes place either by penetration of the skin or via the mouth.
5. After penetrating the skin the larvae proceed to the lungs which they reach within six days; the route taken is presumably via the blood stream.
6. In the lungs the larvae remain for about five days during which period they feed, grow and pass into the fourth stage provided with a provisional buccal capsule.
7. The larvae now migrate to the intestine presumably via the trachea, mouth and oesophages. When first seen in the intestine they have already shed their sheath, but no sex differentiation is yet evident; sex differentiation sets in about four days later. Buccal lancets also appear.
8. The larvae attach themselves to the intestinal villi and feed on the liberated blood. They grow and begin to pass into the final or fifth stage in about a week after reaching the intestine.
9. Final ecdysis takes place about 10 days later.
10. Growth continues and the egg laying stage is reached in nine to ten weeks after infection.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 final presentation PDF-Format.Includes bibliographical referencesab201
On some helminths from the "Nylghiae" Boselaphus tragocamelus (Pall) with observations on the parasitic larval stages of the stomach worm Ashworthius martinagliai sp. n.
Four helminths are recorded from the Nylghiae (Boselaphus tragocamelus), India. One of these – Ashworthius martinagliai – a trichostrongylid stomach-worm, is new to science. Its morphology is described, together with the early fourth stage and late fourth stage female larva. Trichuris globulosus, Cotylophoron cotylophoron and Gastrothylax crumenifer are recorded from this host.The articles have been scanned in colour with a HP Scanjet 5590;300dpi.
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Observations on cestode parasites of guinea-fowl from Southern Africa
Ortlepp reports on collections of cestodes from guinea-fowl in southern Africa located in the Veterinary Research Institute at Onderstepoort. Most of the specimens were much shrunken and coiled, rendering their study difficult. 4 new species are described. The main characteristics of Cotugnia transvaalensis n.sp. from Nutnida meleagris in the Transvaal, C. gutterae n.sp. from Guttera edouardi in Mozambique and of C. crassa and C. meleagridis (also from guinea-fowl) are shown in a table. Several fragments of Raillietina (Raillietina) angusta n.sp. from N. meleagris in Onderstepoort are characterized by the narrow strobila. Hispaniolepis multiuncinata n.sp. from G. edouardi in Northern Rhodesia is compared with related forms. Material of Davainea nana, R. (R.) steinhardti, R. (R.) pintneri, R. (Paroniella) numida, Porogynia paronai and Ascometra numida is described; comparisons are made with the descriptions of other authors. All but R. (R.) angusta of the new species and some of the known species are figured. J.W.S.The articles have been scanned in colour with a HP scanjet 5590; 300dpi.
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South African helminths. Part V. Some avian and mammalian helminths
Some helminths are described and discussed which were recovered from six species of birds and three species of mammals. Of particular interest is the multiple infection encountered in the Reed Cormorants and Giant Bustard; in one case of the former seven different kinds of worms were present, namely
Prosthogonimus cuneatus (Rud., 1809), Harvardia sandgroundi Baer, 1932 and Parphostomum radiatum Duj., 1845 (Trematoda); Ligula intestinalis Linn., 1758, Paradilepsis delachauxi (Fuhrm., 1909) and Hymenolepis cormoranti sp. n. (Cestoda); and the nematode Contracaecum carlislei sp. nov. The Giant Bustard harboured eight different worm species, the majority of which appear to be new to science; these helminths were Schistometra conoideis (Bloch, 1782), Schistometra sp., Idiogenes kori, sp. nov. and Idiogenes kolbei sp. nov. (Cestoda) and Subulura otidis sp. nov., Acuaria semei sp. nov., Histiocephalus choriotidis sp. nov. and two immature female specimens of a Habronema sp. (Nematoda).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.Includes bibliographical referencesab201
South African helminths. Part III. Some mammalian and avian cestodes
The writer here describes eight new species of Cestodes, three from mammals and five from birds; the mammalian species are Inermicapsifer leporis sp. n. from a hare, Catenotaenia geosciuri sp. n. from a suricat. The avian species are Railiettina (Skrjabinia) deweti sp. n. from a guinea fowl, Schistometra korhaani sp. n. from a bustard, Onderstepoortia taeniaeformis gen. and sp. n. from a stone curlew, Cladotaenia freani sp. n. and Cladotaenia vulturi from birds of prey.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.Includes bibliographical referencesab201
South African helminths Part VI : some helminths, chiefly from rodents
Of 10 new species of helminths described 7 are from rodents, 2 from antelopes and I from the rock rabbit, viz., Paralibyostrongylus vondioei gen. and sp. nov. from the cane rat; Longistrongylus schrenki sp. nov. from the waterbuck; Paracooperia raphiceri sp. nov. from the steenbuck; Longistriata (L.) capensis sp. nov., Heligmonoides stellenboschius sp. nov. and Hehgmospiroides spira gen. and sp. nov. from mice; Libyostrongylta bathyergi sp. nov., Longistriata (L.) bathyergi sp. nov. and Heterakis macrospiculum sp. nov. from the dune mole; and Theileriana brevioesophagus sp. nov. from the rock rabbit. R.T.L.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 final presentation PDF-Format.Includes bibliographical referencesab201
Pseudandrya mkuzii sp. nov, (Cestoda : Hymenolepidldae) from Ichneumia albicauda
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