Inbreeding does not alter the response to an experimental heat wave in a freshwater snail
Leicht, K., Jokela, J., & Seppälä, O. (2019). Inbreeding does not alter the response to an experimental heat wave in a freshwater snail. PLoS ONE, 14(8), Article e0220669. https://doi.org/10.1371/journal.pone.0220669
Published inPLoS ONE
© 2019 The Authors
Global climate change affects natural populations of many species by increasing the average temperature and the frequency of extreme weather events (e.g. summer heat waves). The ability of organisms to cope with these environmental changes can, however, depend on their genetic properties. For instance, genetic load owing to inbreeding could alter organisms’ responses to climate change-mediated environmental changes but such effects are often overlooked. We investigated the effects of an experimental heat wave (25°C versus 15°C) on life history (reproduction, size) and constitutive immune defence traits (phenoloxidase-like and antibacterial activity of haemolymph) in relation to inbreeding by manipulating the mating type (outcrossing, self-fertilization) in two populations of a hermaphroditic freshwater snail, Lymnaea stagnalis. High temperature increased reproduction and size of snails but impaired their immune function. In one of the two study populations, inbreeding reduced reproductive output of snails indicating inbreeding depression. Furthermore, this effect did not depend on the temperature snails were exposed to. Our results suggest that L. stagnalis snails can be negatively affected by inbreeding but it may not alter their responses to heat waves. ...
PublisherPublic Library of Science
ISSN Search the Publication Forum1932-6203
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Additional information about fundingThis research was supported by the Biological Interactions Doctoral Program (BIOINT) to KL, and the Emil Aaltonen Foundation and Swiss National Science Foundation (grants 31003A 140876 and 31003A 169531) to OS. The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.
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