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ORIGINAL ARTICLE doi:10.1111/j.1558-5646.2011.01411.x
 

Summary: ORIGINAL ARTICLE
doi:10.1111/j.1558-5646.2011.01411.x
SEXUAL SELECTION AND THE EVOLUTION
OF GENITAL SHAPE AND COMPLEXITY
IN WATER STRIDERS
Locke Rowe1,2
and G ¨oran Arnqvist3,4
1
Department of Ecology and Evolutionary Biology, University of Toronto, Toronto, Ontario M5S 3B2, Canada
2
E-mail: Locke.Rowe@utoronto.ca
3
Animal Ecology, Department of Ecology and Evolution, University of Uppsala, SE ­ 752 36 Uppsala, Sweden
Received November 11, 2010
Accepted June 22, 2011
Animal genitalia show two striking but incompletely understood evolutionary trends: a great evolutionary divergence in the
shape of genitalic structures, and characteristic structural complexity. Both features are thought to result from sexual selection,
but explicit comparative tests are hampered by the fact that it is difficult to quantify both morphological complexity and divergence
in shape. We undertake a comparative study of multiple nongenitalic and male genital traits in a clade of 15 water strider species
to quantify complexity and shape divergence. We show that genital structures are more complex and their shape more divergent

  

Source: Arnqvist, Göran - Department of Animal Ecology, Uppsala Universitet
Rowe, Locke - Department of Ecology and Evolutionary Biology, University of Toronto

 

Collections: Environmental Sciences and Ecology