A link between host dispersal and parasite diversity in two sympatric cichlids of Lake Tanganyika

Autor: Maarten P.M. Vanhove, Jolien Bamps, Antoine Pariselle, Filip Volckaert, Arnout F. Grégoir, Joost A. M. Raeymaekers, Pascal I. Hablützel
Přispěvatelé: Institut des Sciences de l'Evolution de Montpellier (UMR ISEM), École pratique des hautes études (EPHE), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Montpellier (UM)-Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Centre National de la Recherche Scientifique (CNRS)-Institut de recherche pour le développement [IRD] : UR226, Laboratory of Animal Diversity and Systematics, Catholic University of Leuven - Katholieke Universiteit Leuven (KU Leuven)
Jazyk: angličtina
Rok vydání: 2015
Předmět:
Zdroj: Freshwater Biology
Freshwater Biology, Wiley, 2015, 60 (2), pp.323-335. ⟨10.1111/fwb.12492⟩
ISSN: 0046-5070
1365-2427
DOI: 10.1111/fwb.12492⟩
Popis: A major goal in ecology is to unravel how species assemblages emerge and how they are structured across the landscape. Host-parasite systems are particularly interesting in this context, as limited host dispersal may promote the differentiation of parasite communities. We examined whether the patterns of species diversity in Cichlidogyrus, a genus of monogenean parasitic flatworms with a direct life cycle, are consistent with the hypothesis that parasite diversity is driven by host dispersal. This was carried out by comparing two sympatric cichlid hosts (Tropheus moorii and Simochromis diagramma) with contrasting dispersal abilities. Genetic connectivity among host populations along the Zambian shoreline of Lake Tanganyika was estimated using microsatellite genotyping. Cichlidogyrus parasites were isolated and identified morphologically to the species level.Simochromis diagramma, a host with a high dispersal capacity, was infected by a low number of Cichlidogyrus species, and the parasite assemblages were similar among host populations. In contrast, T.moorii, a host with a low dispersal capacity, was infected by a large number of Cichlidogyrus species, and the parasite assemblages differed strongly among host populations. These outcomes were thus as expected from the hypothesis. Because of the strong host specificity of these Cichlidogyrus species, a lack of connectivity among host populations might facilitate allopatric speciation of the parasite.
Databáze: OpenAIRE
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