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Larval trematode communities in Radix auricularia and Lymnaea stagnalis in a reservoir system of the Ruhr River

BACKGROUND: Analysis of the data available from traditional faunistic approaches to mollusc-trematode systems covering large spatial and/or temporal scales in Europe convinced us that a parasite community approach in well-defined aquatic ecosystems is essential for the substantial advancement of our...

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Autores principales: Soldánová, Miroslava, Selbach, Christian, Sures, Bernd, Kostadinova, Aneta, Pérez-del-Olmo, Ana
Formato: Texto
Lenguaje:English
Publicado: BioMed Central 2010
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2910012/
https://www.ncbi.nlm.nih.gov/pubmed/20576146
http://dx.doi.org/10.1186/1756-3305-3-56
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author Soldánová, Miroslava
Selbach, Christian
Sures, Bernd
Kostadinova, Aneta
Pérez-del-Olmo, Ana
author_facet Soldánová, Miroslava
Selbach, Christian
Sures, Bernd
Kostadinova, Aneta
Pérez-del-Olmo, Ana
author_sort Soldánová, Miroslava
collection PubMed
description BACKGROUND: Analysis of the data available from traditional faunistic approaches to mollusc-trematode systems covering large spatial and/or temporal scales in Europe convinced us that a parasite community approach in well-defined aquatic ecosystems is essential for the substantial advancement of our understanding of the parasite response to anthropogenic pressures in urbanised areas which are typical on a European scale. Here we describe communities of larval trematodes in two lymnaeid species, Radix auricularia and Lymnaea stagnalis in four man-made interconnected reservoirs of the Ruhr River (Germany) focusing on among- and within-reservoir variations in parasite prevalence and component community composition and structure. RESULTS: The mature reservoir system on the Ruhr River provides an excellent environment for the development of species-rich and abundant trematode communities in Radix auricularia (12 species) and Lymnaea stagnalis (6 species). The lake-adapted R. auricularia dominated numerically over L. stagnalis and played a major role in the trematode transmission in the reservoir system. Both host-parasite systems were dominated by bird parasites (13 out of 15 species) characteristic for eutrophic water bodies. In addition to snail size, two environmental variables, the oxygen content and pH of the water, were identified as important determinants of the probability of infection. Between-reservoir comparisons indicated an advanced eutrophication at Baldeneysee and Hengsteysee and the small-scale within-reservoir variations of component communities provided evidence that larval trematodes may have reflected spatial bird aggregations (infection 'hot spots'). Two life history groupings of dominant species, the 'cyprinid' and 'anatid' parasites, that depict two aspects of progressive eutrophication in this mature reservoir system, were identified. CONCLUSIONS: We conclude that trematode communities in the lake-adapted R. auricularia are better suited for monitoring the effect of environmental change on host-parasite associations in the reservoir system on the Ruhr River and other similar systems due to the important role of this host in trematode transmission in lakes. Whereas variations in trematode community diversity and abundance may indicate the degree of eutrophication on a larger scale (among reservoirs), the infection rates of the two life history groups of dominant species, the 'cyprinid' and 'anatid' assemblages, may be particularly useful in depicting environmental variability, eutrophication effects and infection 'hot spots' on smaller spatial scales.
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spelling pubmed-29100122010-07-27 Larval trematode communities in Radix auricularia and Lymnaea stagnalis in a reservoir system of the Ruhr River Soldánová, Miroslava Selbach, Christian Sures, Bernd Kostadinova, Aneta Pérez-del-Olmo, Ana Parasit Vectors Research BACKGROUND: Analysis of the data available from traditional faunistic approaches to mollusc-trematode systems covering large spatial and/or temporal scales in Europe convinced us that a parasite community approach in well-defined aquatic ecosystems is essential for the substantial advancement of our understanding of the parasite response to anthropogenic pressures in urbanised areas which are typical on a European scale. Here we describe communities of larval trematodes in two lymnaeid species, Radix auricularia and Lymnaea stagnalis in four man-made interconnected reservoirs of the Ruhr River (Germany) focusing on among- and within-reservoir variations in parasite prevalence and component community composition and structure. RESULTS: The mature reservoir system on the Ruhr River provides an excellent environment for the development of species-rich and abundant trematode communities in Radix auricularia (12 species) and Lymnaea stagnalis (6 species). The lake-adapted R. auricularia dominated numerically over L. stagnalis and played a major role in the trematode transmission in the reservoir system. Both host-parasite systems were dominated by bird parasites (13 out of 15 species) characteristic for eutrophic water bodies. In addition to snail size, two environmental variables, the oxygen content and pH of the water, were identified as important determinants of the probability of infection. Between-reservoir comparisons indicated an advanced eutrophication at Baldeneysee and Hengsteysee and the small-scale within-reservoir variations of component communities provided evidence that larval trematodes may have reflected spatial bird aggregations (infection 'hot spots'). Two life history groupings of dominant species, the 'cyprinid' and 'anatid' parasites, that depict two aspects of progressive eutrophication in this mature reservoir system, were identified. CONCLUSIONS: We conclude that trematode communities in the lake-adapted R. auricularia are better suited for monitoring the effect of environmental change on host-parasite associations in the reservoir system on the Ruhr River and other similar systems due to the important role of this host in trematode transmission in lakes. Whereas variations in trematode community diversity and abundance may indicate the degree of eutrophication on a larger scale (among reservoirs), the infection rates of the two life history groups of dominant species, the 'cyprinid' and 'anatid' assemblages, may be particularly useful in depicting environmental variability, eutrophication effects and infection 'hot spots' on smaller spatial scales. BioMed Central 2010-06-24 /pmc/articles/PMC2910012/ /pubmed/20576146 http://dx.doi.org/10.1186/1756-3305-3-56 Text en Copyright ©2010 Soldánová et al; licensee BioMed Central Ltd. http://creativecommons.org/licenses/by/2.0 This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
spellingShingle Research
Soldánová, Miroslava
Selbach, Christian
Sures, Bernd
Kostadinova, Aneta
Pérez-del-Olmo, Ana
Larval trematode communities in Radix auricularia and Lymnaea stagnalis in a reservoir system of the Ruhr River
title Larval trematode communities in Radix auricularia and Lymnaea stagnalis in a reservoir system of the Ruhr River
title_full Larval trematode communities in Radix auricularia and Lymnaea stagnalis in a reservoir system of the Ruhr River
title_fullStr Larval trematode communities in Radix auricularia and Lymnaea stagnalis in a reservoir system of the Ruhr River
title_full_unstemmed Larval trematode communities in Radix auricularia and Lymnaea stagnalis in a reservoir system of the Ruhr River
title_short Larval trematode communities in Radix auricularia and Lymnaea stagnalis in a reservoir system of the Ruhr River
title_sort larval trematode communities in radix auricularia and lymnaea stagnalis in a reservoir system of the ruhr river
topic Research
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2910012/
https://www.ncbi.nlm.nih.gov/pubmed/20576146
http://dx.doi.org/10.1186/1756-3305-3-56
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