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Two cues for sex determination in Gammarus duebeni : Adaptive variation in environmental sex determination?

2005; Wiley; Volume: 50; Issue: 1 Linguagem: Inglês

10.4319/lo.2005.50.1.0346

1939-5604

Alison M. Dunn, John Clarence Hogg, Andrew Kelly, Melanie J. Hatcher,

Insect-Plant Interactions and Control

Limnology and OceanographyVolume 50, Issue 1 p. 346-353 ArticleFree Access Two cues for sex determination in Gammarus duebeni: Adaptive variation in environmental sex determination? Alison M. Dunn, Corresponding Author Alison M. Dunn Centre for Biodiversity and Conservation, School of Biology, University of Leeds, LS2 9JT, United KingdomCorresponding author (a.dunn@leeds.ac.uk)Search for more papers by this authorJohn C. Hogg, John C. Hogg Centre for Biodiversity and Conservation, School of Biology, University of Leeds, LS2 9JT, United KingdomSearch for more papers by this authorAndrew Kelly, Andrew Kelly Centre for Biodiversity and Conservation, School of Biology, University of Leeds, LS2 9JT, United KingdomPresent address: Scottish Universities Environmental Research Centre, Scottish Enterprise Technology Park, East Kilbride, Glasgow G76 OQF, United KingdomSearch for more papers by this authorMelanie J. Hatcher, Melanie J. Hatcher School of Biological Sciences, University of Bristol, Woodland Road, Bristol BS8 1UG, United KingdomSearch for more papers by this author Alison M. Dunn, Corresponding Author Alison M. Dunn Centre for Biodiversity and Conservation, School of Biology, University of Leeds, LS2 9JT, United KingdomCorresponding author (a.dunn@leeds.ac.uk)Search for more papers by this authorJohn C. Hogg, John C. Hogg Centre for Biodiversity and Conservation, School of Biology, University of Leeds, LS2 9JT, United KingdomSearch for more papers by this authorAndrew Kelly, Andrew Kelly Centre for Biodiversity and Conservation, School of Biology, University of Leeds, LS2 9JT, United KingdomPresent address: Scottish Universities Environmental Research Centre, Scottish Enterprise Technology Park, East Kilbride, Glasgow G76 OQF, United KingdomSearch for more papers by this authorMelanie J. Hatcher, Melanie J. Hatcher School of Biological Sciences, University of Bristol, Woodland Road, Bristol BS8 1UG, United KingdomSearch for more papers by this author First published: 19 January 2005 https://doi.org/10.4319/lo.2005.50.1.0346Citations: 20 AboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onFacebookTwitterLinked InRedditWechat Abstract In the crustacean Gammarus duebeni, sex is determined by the interaction of a number of environmental, genetic and parasitic factors, which may, in turn, influence sex ratios and population dynamics. We produce novel evidence that environmental sex determination (ESD) in G. duebeni depends primarily on the interaction of two environmental cues: day length and temperature. Whereas previous work found that male-biased sex ratios were produced under long day conditions and female biases under short days, we show that, at the lower temperatures normally experienced by this species at northern latitudes, the reverse pattern can occur. We measured ESD in four U.K. populations and found among-population variation in the level of ESD and in the cues that determined sex. In the light of these findings, we conclude that patterns of ESD across the four populations may reflect selection based on differences in breeding season and discrete/overlapping generations. Citing Literature Volume50, Issue1January 2005Pages 346-353 RelatedInformation