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Bayesian inference supports the host selection hypothesis in explaining adaptive host specificity by European bitterling
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SYSNO ASEP 0473546 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Bayesian inference supports the host selection hypothesis in explaining adaptive host specificity by European bitterling Author(s) Smith, Carl (UBO-W) RID, ORCID, SAI Number of authors 1 Source Title Oecologia. - : Springer - ISSN 0029-8549
Roč. 183, č. 2 (2017), s. 379-389Number of pages 11 s. Language eng - English Country NL - Netherlands Keywords Brood parasite ; Host–parasite co-evolution ; Oviposition ; Spawning site ; Superparasitism Subject RIV EG - Zoology OECD category Ecology R&D Projects GA13-05872S GA ČR - Czech Science Foundation (CSF) Institutional support UBO-W - RVO:68081766 UT WOS 000394254500007 EID SCOPUS 84997077997 DOI 10.1007/s00442-016-3780-5 Annotation Generalist parasites have the capacity to infect multiple hosts. The temporal pattern of host specificity by generalist parasites is rarely studied, but is critical to understanding what variables underpin infection and thereby the impact of parasites on host species and the way they impose selection on hosts. Here, the temporal dynamics of infection of four species of freshwater mussel by European bitterling fish (Rhodeus amarus) was investigated over three spawning seasons. Bitterling lay their eggs in the gills of freshwater mussels, which suffer reduced growth, oxygen stress, gill damage and elevated mortality as a result of parasitism. The temporal pattern of infection of mussels by European bitterling in multiple populations was examined. Using a Bernoulli Generalized Additive Mixed Model with Bayesian inference it was demonstrated that one mussel species, Unio pictorum, was exploited over the entire bitterling spawning season. As the season progressed, bitterling showed a preference for other mussel species, which were inferior hosts. Temporal changes in host use reflected elevated density-dependent mortality in preferred hosts that were already infected. Plasticity in host specificity by bitterling conformed with the predictions of the host selection hypothesis. The relationship between bitterling and their host mussels differs qualitatively from that of avian brood parasites. Workplace Institute of Vertebrate Biology Contact Hana Slabáková, slabakova@ivb.cz, Tel.: 543 422 524 Year of Publishing 2018
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