Structure and temporal variation of trematode and gastropod communities in a freshwater ecosystem. Export

@article{Gerard2001Structure-and-temporal-variation-of-trematode-and-gastropod, abstract = {The infro- and component community dynamics of digenetic trematodes in a freshwater gastropod community were examined over a 33-month period. The gastropod and trematode communities were composed of 17 and 10 species respectively. A total of 9,831 snails was collected; among them, 192 belonging to 14 species were infected by larval trematodes. The size of infected snails was significantly greater than that of healthy ones, and the increase of prevalence with size/age was interpreted as related to the increased probability of ultimately becoming parasitized. The trematode community was rich in allogenic species, but the most frequent trematode (cercariaeum) was autogenic and generalist (a range of 12 snail host species). There was a significantly positive relationship between the frequency of trematode species in the community and the number of first intermediate host species. A great temporal heterogeneity occurred in the prevalence of the snails, mainly attributed to the great temporal fluctuations of snail host populations and the variability of freshwater ecological conditions. The data on the occurrence of larval trematodes in 14 host species over the 33-month study allowed indicate a significant negative correlation between the abundance of gastropods and the prevalence of trematodes.}, address = {UMR CNRS 6553 Ecobio, Equipe Physiologie et Ecophysiologie, Universite de Rennes I, Avenue du General Leclerc, 35042 Rennes, France. claudia.gerard@univ-rennes1.fr}, author = {Gerard, C.}, citeulike-article-id = {1693487}, journal = {Parasite}, keywords = {age, animals, density, developmentparasitology, dynamics, ecosystem, factors, female, france, fresh, histologygrowth, host-parasite, larva, longitudinal, male, parasites\_and\_pollution, population, prevalence, purificationphysiology, relations, seasons, snailsanatomy, studies, trematodaclassificationisolation, water}, number = {4}, pages = {275--287}, posted-at = {2007-09-25 18:15:32}, priority = {0}, title = {Structure and temporal variation of trematode and gastropod communities in a freshwater ecosystem.}, volume = {8}, year = {2001} }

TY - JOUR ID - Gerard2001Structure-and-temporal-variation-of-trematode-and-gastropod L3 - citeulike-article-id:1693487 N2 - The infro- and component community dynamics of digenetic trematodes in a freshwater gastropod community were examined over a 33-month period. The gastropod and trematode communities were composed of 17 and 10 species respectively. A total of 9,831 snails was collected; among them, 192 belonging to 14 species were infected by larval trematodes. The size of infected snails was significantly greater than that of healthy ones, and the increase of prevalence with size/age was interpreted as related to the increased probability of ultimately becoming parasitized. The trematode community was rich in allogenic species, but the most frequent trematode (cercariaeum) was autogenic and generalist (a range of 12 snail host species). There was a significantly positive relationship between the frequency of trematode species in the community and the number of first intermediate host species. A great temporal heterogeneity occurred in the prevalence of the snails, mainly attributed to the great temporal fluctuations of snail host populations and the variability of freshwater ecological conditions. The data on the occurrence of larval trematodes in 14 host species over the 33-month study allowed indicate a significant negative correlation between the abundance of gastropods and the prevalence of trematodes. IS - 4 JF - Parasite AD - UMR CNRS 6553 Ecobio, Equipe Physiologie et Ecophysiologie, Universite de Rennes I, Avenue du General Leclerc, 35042 Rennes, France. claudia.gerard@univ-rennes1.fr EP - 287 TI - Structure and temporal variation of trematode and gastropod communities in a freshwater ecosystem. VL - 8 SP - 275 KW - age KW - animals KW - density KW - developmentparasitology KW - dynamics KW - ecosystem KW - factors KW - female KW - france KW - fresh KW - histologygrowth KW - host-parasite KW - larva KW - longitudinal KW - male KW - parasites_and_pollution KW - population KW - prevalence KW - purificationphysiology KW - relations KW - seasons KW - snailsanatomy KW - studies KW - trematodaclassificationisolation KW - water AU - Gerard, C PY - 2001/// ER -