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Phenotypic and genetic variation in emergence and development time of a trimorphic damselfly

In English

Författare

Summary, in English

Although colour polymorphisms in adult organisms of many taxa are often adaptive in the context of sexual selection or predation, genetic correlations between colour and other phenotypic traits expressed early in ontogeny could also play an important role in polymorphic systems. We studied phenotypic and genetic variation in development time among female colour morphs in the polymorphic damselfly Ischnura elegans in the field and by raising larvae in a common laboratory environment. In the field, the three different female morphs emerged at different times. Among laboratory-raised families, we found evidence of a significant correlation between maternal morph and larval development time in both sexes. This suggests that the phenotypic correlation between morph and emergence time in the field has a parallel in a genetic correlation between maternal colour and offspring development time. Maternal colour morph frequencies could thus potentially change as correlated responses to selection on larval emergence dates. The similar genetic correlation in male offspring suggests that sex-limitation in this system is incomplete, which may lead to an ontogenetic sexual conflict between selection for early male emergence (protandry) and emergence times associated with maternal morph.

Publiceringsår

2005

Språk

Engelska

Sidor

1464-1470

Publikation/Tidskrift/Serie

Journal of evolutionary biology

Volym

18

Issue

6

Dokumenttyp

Artikel i tidskrift

Förlag

John Wiley & Sons Inc.

Ämne

  • Biological Sciences

Status

Published

Forskningsgrupp

  • Genetics of Sex Differences
  • Evolution and Ecology of Phenotypes in Nature

ISBN/ISSN/Övrigt

  • ISSN: 1420-9101