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Evaluating temperature- and host-dependent reproduction in the parasitic freshwater mussel Unio crassus
Karlstad University, Faculty of Health, Science and Technology (starting 2013), Department of Environmental and Life Sciences (from 2013). Karlstad University, Faculty of Social and Life Sciences, Department of Biology. (Naturresurs rinnande vatten)ORCID iD: 0000-0003-3524-0883
Karlstad University, Faculty of Health, Science and Technology (starting 2013), Department of Environmental and Life Sciences (from 2013). Karlstad University, Faculty of Social and Life Sciences, Department of Biology.ORCID iD: 0000-0002-3541-9835
Karlstad University, Faculty of Health, Science and Technology (starting 2013), Department of Environmental and Life Sciences (from 2013). Karlstad University, Faculty of Social and Life Sciences, Department of Biology.ORCID iD: 0000-0001-6758-5857
2017 (English)In: Hydrobiologia, ISSN 0018-8158, E-ISSN 1573-5117, Vol. 810, no 1, p. 283-293Article in journal (Refereed) Published
Abstract [en]

Adaptation to temperature regimes and host presence may enhance fitness in parasites. In an experimental study, we evaluated the timing of glochidia release by Unio crassus subjected to three spring water temperature regimes in the presence and absence of the host fish Cottus gobio. The timing of glochidia release was delayed at (i) constantly low temperatures (<10°C), in contrast to earlier and pronounced releases at (ii) natural temperature increases that level off at intermediate temperatures (10–15°C), and (iii) higher-than-normal temperatures (10–20°C). Mussels from treatment (i) that had not released glochidia during the experiment did so soon after being moved to the temperature in (ii), indicating a temperature threshold for glochidia release. Neither host fish presence nor the combined effect of temperature and host fish presence significantly affected the timing of glochidia release. The treatment with natural spring water temperatures indicated possible fitness benefits for U. crassus through combined effects of high intensities of glochidia releases and high survival of released glochidia. The furthered understanding of climate change effects on mussel and host phenology in seasonal environments, potentially inducing temporal mismatches of glochidia release to host availability, is key to mussel conservation

Place, publisher, year, edition, pages
Springer, 2017. Vol. 810, no 1, p. 283-293
National Category
Ecology Zoology
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URN: urn:nbn:se:kau:diva-65810DOI: 10.1007/s10750-017-3217-0OAI: oai:DiVA.org:kau-65810DiVA, id: diva2:1177206
Available from: 2018-01-24 Created: 2018-01-24 Last updated: 2018-07-06Bibliographically approved

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Schneider, Lea DominiqueNilsson, Per AndersÖsterling, Martin

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