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Wing dimorphism as an adaptive strategy in water-striders (Gerris)

2009; BioMed Central; Volume: 84; Issue: 1 Linguagem: Inglês

10.1111/j.1601-5223.1976.tb01196.x

1601-5223

Olli Järvinen, Kari Vepsäläinen,

Animal Behavior and Reproduction

HereditasVolume 84, Issue 1 p. 61-68 Open Access Wing dimorphism as an adaptive strategy in water-striders (Gerris) Olli Järvinen, Corresponding Author Olli Järvinen Department of Genetics, University of Helsinki, Finland2Department of Genetics, University of Helsinki, P. Rautatiekatu 13, SF-00100 Helsinki 10, FinlandSearch for more papers by this authorKari Vepsäläinen, Kari Vepsäläinen Department of Genetics, University of Helsinki, FinlandSearch for more papers by this author Olli Järvinen, Corresponding Author Olli Järvinen Department of Genetics, University of Helsinki, Finland2Department of Genetics, University of Helsinki, P. Rautatiekatu 13, SF-00100 Helsinki 10, FinlandSearch for more papers by this authorKari Vepsäläinen, Kari Vepsäläinen Department of Genetics, University of Helsinki, FinlandSearch for more papers by this author First published: December 1976 https://doi.org/10.1111/j.1601-5223.1976.tb01196.xCitations: 15AboutPDF ToolsExport 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 Abstract Several hypotheses have been suggested to account for the adaptive significance of the different wing morphs in water-striders (Gerris, Heteroptera). Stability and isolation of population sites should favour short-wingedness; increased rates of population extinction should increase the fitness of the long-winged individuals. Further, if the populations are often resource (food) limited, dimorphism may be optimal. Combinations of other selective pressures can also produce local dimorphism, which need not be optimal — dimorphism can result from mixing of individuals from different population sites. The term morphism cycle is coined to express a cyclical change: when a region (comprising a great number of population sites) is initially colonized, long-wingedness is favoured, but short-wingedness becomes more advantageous after the colonization phase. However, if the populations become totally short-winged, they probably face a relatively high risk of extinction, and the cycle may begin anew. 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