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Metazoan parasites of Himantopus mexicanus Muller (Aves) from southwestern Texas, with a checklist of helminth parasites from North America.

Nineteen species of helminths were recovered from 34 of 35 black-necked stilts, Himantopus mexicanus Muller, collected from the Fort Bliss ponds, El Paso County, Texas. New host records are marked with an. The species identified were: Acoleus vaginatus, Davainea himantopodis, Diplophallus polymorphus, Eurycestus avoceti, Hymenolepis himantopodis, Hymenolepis sp. 1, Infula macrophallus, Coacitrema michiganensis, Cyclocoelum lanceolatum, Notocotylus sp., Parastrigea mexicanus, Tanaisia fedtschenkoi, Capillaria sp., C. anatis, C. contorta, C. mergi, Chevreuxia americana, Eustronglydes mergorum, and Splendidofilaria sp. Six species of mallophagan lice and 1 species of nasal mite, Rhinonyssus himantopus, were recovered. Helminths showed little concentration for dominance (0.09), were not very evenly distributed (0.49 +/- 0.08) nor very diverse (0.73 +/- 0.14), and most species were highly aggregated. The helminth community consisted of an unusually large number of core species (10). Three large species of tapeworms exhibited mostly paired infections, were mutually exclusive, and were negatively associated (-1).

Animals

[Comparative study of the cutaneous and ocular lesions of murids Lemniscomys striatus parasitized by Monanema spp. and Atherurus africanus parasitized by Cercopithifilaria sp. with those of human onchocercosis].

Histologic examination of skin and ocular lesions in various rodents infested by various species of Filariae with skin-dwelling microfilariae disclosed very similar aspects as compared to lesions noted in human onchocerciasis: coexistence in the same organ of five following types of lesion: vascular changes; subacute inflammatory cells infiltration; granulomatous lesions; scarring alterations; vascular ectasia.

Animals

Short term in vitro cultivation of malaria parasites in Papua New Guinea for preparation of biosynthetically-labelled parasite antigens.

Short term in vitro cultivation has been used successfully for biosynthetic labelling of TCA precipitable macromolecules of Papua New guinean isolates of Plasmodium falciparum. Conditions satisfactory for completion of the asexual erythrocytic cycle were achieved with aa minimum of sophisticated equipment. The techniques used are described in detail and mention is made of possible applications to assessment of chloroquine resistance and the mode of action of inhibitory antisera.

Antigens