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Reduced host-specificity in a parasite infecting non-littoral Lake Tanganyika cichlids evidenced by intraspecific morphological and genetic diversity
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SYSNO ASEP 0468863 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Reduced host-specificity in a parasite infecting non-littoral Lake Tanganyika cichlids evidenced by intraspecific morphological and genetic diversity Author(s) Kmentová, N. (CZ)
Gelnar, M. (CZ)
Mendlová, M. (CZ)
Van Steenberge, M. (BE)
Koblmüller, Stephan (UBO-W) ORCID
Vanhove, M. P. M. (BE)Number of authors 6 Article number 39605 Source Title Scientific Reports. - : Nature Publishing Group - ISSN 2045-2322
Roč. 6, č. 39605 (2016)Number of pages 15 s. Language eng - English Country GB - United Kingdom Keywords Monogenean parasites ; Ancyrocephalidae ; adaptive radiation ; statistical tests ; population growth ; DNA polymorphism ; fish families ; Teleostei ; phylogeny Subject RIV EG - Zoology R&D Projects GBP505/12/G112 GA ČR - Czech Science Foundation (CSF) Institutional support UBO-W - RVO:68081766 UT WOS 000390268100001 EID SCOPUS 85007173591 DOI https://doi.org/10.1038/srep39605 Annotation Lake Tanganyika is well-known for its high species-richness and rapid radiation processes. Its assemblage of cichlid fishes recently gained momentum as a framework to study parasite ecology and evolution. It offers a rare chance to investigate the influence of a deepwater lifestyle in a freshwater fish-parasite system. Our study represents the first investigation of parasite intraspecific genetic structure related to host specificity in the lake. It focused on the monogenean flatworm Cichlidogyrus casuarinus infecting deepwater cichlids belonging to Bathybates and Hemibates. Morphological examination of C. casuarinus had previously suggested a broad host range, while the lake's other Cichlidogyrus species are usually host specific. However, ongoing speciation or cryptic diversity could not be excluded. To distinguish between these hypotheses, we analysed intraspecific diversity of C. casuarinus. Monogeneans from nearly all representatives of the host genera were examined using morphometrics, geomorphometrics and genetics. We confirmed the low host-specificity of C. casuarinus based on morphology and nuclear DNA. Yet, intraspecific variation of sclerotized structures was observed. Nevertheless, the highly variable mitochondrial DNA indicated recent population expansion, but no ongoing parasite speciation, confirming, for the first time in freshwater, reduced parasite host specificity in the deepwater realm, probably an adaptation to low host availability. Workplace Institute of Vertebrate Biology Contact Hana Slabáková, slabakova@ivb.cz, Tel.: 543 422 524 Year of Publishing 2017
Number of the records: 1