1. 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. 2. 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. 3.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. 4. Because of the strong host specificity of these Cichlidogyrus species, a lack of connectivity among host populations might facilitate allopatric speciation of the parasite.
Located in
Library
/
RBINS Staff Publications
Whereas environmental studies are today an important part of urban archaeological research in many towns and cities in Europe, they often focus on individual sites and do not always result in larger syntheses. To exploit the full potential of urban environmental studies in Brussels, Belgium, a specific framework has been developed, explicitly aimed at coping with the inherent complexity of urban investigations, including the variety of research themes that need to be dealt with, the challenges of fast-evolving environmental research, and how to address the needs of different stakeholders. This article discusses how the framework was created, the challenges that have been dealt with over the past few decades, and how we can further improve the framework for the future.
Located in
Library
/
RBINS Staff Publications 2025
