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Comparative infectivity and survival of first-stage larvae of Angiostrongylus cantonensis and Angiostrongylus malaysiensis. 1995

K Sawabe, and K Makiya
Department of Parasitology and Tropical Public Health, University of Occupational and Environmental Health, Kitakyushu, Japan.

Angiostrongylus malaysiensis was isolated from wild rats Rattus norvegicus in a seaport area of Kitakyushu City, Kyushu, Japan in 1990. The infectivity and survival capacities of first-stage larvae of A. malaysiensis and Angiostrongylus cantonensis were compared under various conditions. Infectivity of first-stage larvae of the former in Biomphalaria glabrata was much lower than that of the latter. In an exposure at various pHs, and with various proteases and tissue homogenates of B. glabrata, the survival of first-stage larvae of A. malaysiensis was also lower than that of A. cantonensis. This lower survival was compared to that of A. cantonensis in response to desiccation of rat feces and high water temperature. First-stage larvae of A. malaysiensis thus appear to be influenced by conditions in the host's feces, specifically temperature and desiccation, and also show a greater sensitivity to pH and component proteases in the snail body than A. cantonensis.

UI MeSH Term Description Entries
D007814 Larva Wormlike or grublike stage, following the egg in the life cycle of insects, worms, and other metamorphosing animals. Maggots,Tadpoles,Larvae,Maggot,Tadpole
D009115 Muridae A family of the order Rodentia containing 250 genera including the two genera Mus (MICE) and Rattus (RATS), from which the laboratory inbred strains are developed. The fifteen subfamilies are SIGMODONTINAE (New World mice and rats), CRICETINAE, Spalacinae, Myospalacinae, Lophiomyinae, ARVICOLINAE, Platacanthomyinae, Nesomyinae, Otomyinae, Rhizomyinae, GERBILLINAE, Dendromurinae, Cricetomyinae, MURINAE (Old World mice and rats), and Hydromyinae. Murids,Murid
D005243 Feces Excrement from the INTESTINES, containing unabsorbed solids, waste products, secretions, and BACTERIA of the DIGESTIVE SYSTEM.
D006863 Hydrogen-Ion Concentration The normality of a solution with respect to HYDROGEN ions; H+. It is related to acidity measurements in most cases by pH pH,Concentration, Hydrogen-Ion,Concentrations, Hydrogen-Ion,Hydrogen Ion Concentration,Hydrogen-Ion Concentrations
D000801 Angiostrongylus A genus of parasitic nematodes of the superfamily METASTRONGYLOIDEA. Two species, ANGIOSTRONGYLUS CANTONENSIS and A. vasorum, infest the lungs of rats and dogs, respectively. A. cantonensis is transmissible to man where it causes frequently fatal infection of the central nervous system.
D000818 Animals Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA. Animal,Metazoa,Animalia
D001700 Biomphalaria A genus of planorbid freshwater snails, species of which are intermediate hosts of Schistosoma mansoni. Australorbis,Australorbis glabratus,Australorbi,Biomphalarias
D012376 Rodent Diseases Diseases of rodents of the order RODENTIA. This term includes diseases of Sciuridae (squirrels), Geomyidae (gophers), Heteromyidae (pouched mice), Castoridae (beavers), Cricetidae (rats and mice), Muridae (Old World rats and mice), Erethizontidae (porcupines), and Caviidae (guinea pigs). Disease, Rodent,Diseases, Rodent,Rodent Disease
D017206 Strongylida Infections Infections with nematodes of the order STRONGYLIDA. Stephanurus dentatus Infections,Syngamiasis,Angiostrongylus Infections,Infections, Stephanurus dentatus,Infections, Strongylida,Angiostrongylus Infection,Infection, Angiostrongylus,Infection, Stephanurus dentatus,Infection, Strongylida,Stephanurus dentatus Infection,Strongylida Infection,Syngamiases
D051381 Rats The common name for the genus Rattus. Rattus,Rats, Laboratory,Rats, Norway,Rattus norvegicus,Laboratory Rat,Laboratory Rats,Norway Rat,Norway Rats,Rat,Rat, Laboratory,Rat, Norway,norvegicus, Rattus

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