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Correlated evolution between male ejaculate allocation and female remating behaviour in seed beetles (Bruchidae)
 

Summary: Correlated evolution between male ejaculate allocation and female
remating behaviour in seed beetles (Bruchidae)
M. KATVALA, J. L. RO¨ NN & G. ARNQVIST
Evolutionary Biology Centre, Department of Animal Ecology, Uppsala University, Sweden
Introduction
Morphological traits involved in post-mating sexual
selection, such as sperm morphology and the dimensions
of the female reproductive tract, have been shown to
coevolve in several vertebrate and invertebrate taxa (e.g.
Dybas & Dybas, 1981; Briskie & Montgomerie, 1993;
Briskie et al., 1997; Pitnick et al., 1999, 2003; Presgraves
et al., 1999; Ilango & Lane, 2000; Morrow & Gage, 2000;
Koene & Schulenburg, 2003; Minder et al., 2005; Bren-
nan et al., 2007; Ro¨nn et al., 2007). Such correlated
evolution is normally thought to be generated by sperm
competition, which occurs when sperm from two or
more males compete for the fertilization of a given set of
ova (Parker, 1998). Comparative studies across species, as
well as experimental studies within species, have shown
that sperm competition affects the evolution of several

  

Source: Arnqvist, Göran - Department of Animal Ecology, Uppsala Universitet

 

Collections: Environmental Sciences and Ecology