Publications des scientifiques de l'IRD

Gregoir A. F., Hablutzel P. I., Vanhove M. P. M., Pariselle Antoine, Bamps J., Volckaert F. A. M., Raeymaekers J. A. M. (2015). A link between host dispersal and parasite diversity in two sympatric cichlids of Lake Tanganyika. Freshwater Biology, 60 (2), p. 323-335. ISSN 0046-5070.

Titre du document
A link between host dispersal and parasite diversity in two sympatric cichlids of Lake Tanganyika
Année de publication
2015
Type de document
Article référencé dans le Web of Science WOS:000347706400008
Auteurs
Gregoir A. F., Hablutzel P. I., Vanhove M. P. M., Pariselle Antoine, Bamps J., Volckaert F. A. M., Raeymaekers J. A. M.
Source
Freshwater Biology, 2015, 60 (2), p. 323-335 ISSN 0046-5070
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.
Plan de classement
Limnologie biologique / Océanographie biologique [034]
Description Géographique
AFRIQUE DE L'EST / TANGANYIKA LAC
Localisation
Fonds IRD [F B010063687]
Identifiant IRD
fdi:010063687
Contact