The evolution of reproductive character displacement conflicts with how sexual selection operates within a species

Higgie, Megan, and Blows, Mark W. (2008) The evolution of reproductive character displacement conflicts with how sexual selection operates within a species. Evolution, 62 (5). pp. 1192-1203.

[img] PDF (Published Version) - Published Version
Restricted to Repository staff only

View at Publisher Website: http://dx.doi.org/10.1111/j.1558-5646.20...
 
59
3


Abstract

Processes that affect the evolution of female preferences or male display traits involved in mating decisions in different geographic areas have the potential to result in within-species divergence. This could occur via reinforcement of mate recognition in species using the same traits for species recognition and sexual selection. Sympatric individuals experience reinforcement of female preferences and male display traits, whereas allopatric individuals do not, creating the potential for divergent sexual selection in sympatric and allopatric populations. Sexual selection operates on the cuticular hydrocarbons (CHCs) of Drosophila serrata, and reinforcement on the CHCs of populations sympatric with D. birchii. Here, we manipulate sexual selection in D. serrata populations generated by hybridizing natural sympatric and allopatric populations. Under the influence of sexual selection, male CHCs evolved from an intermediate phenotype to resemble an allopatric phenotype, which was driven by female choice. Additionally, female choice resulted in evolution of an allopatric female preference, so that allopatric males were preferred to sympatric males. Allopatric CHCs and preferences represent a sexual selection optimum via female choice. Sympatric populations display suboptimal phenotypes relative to their allopatric conspecifics. The combination of reinforcement and sexual selection can therefore generate divergence in female preferences and male display traits.

Item ID: 24305
Item Type: Article (Research - C1)
ISSN: 1558-5646
Keywords: Drosophila serrata, female preference, mate choice, reinforcement, selection experiment, sympatry and allopatry
Date Deposited: 08 Feb 2013 00:57
FoR Codes: 06 BIOLOGICAL SCIENCES > 0603 Evolutionary Biology > 060303 Biological Adaptation @ 60%
06 BIOLOGICAL SCIENCES > 0603 Evolutionary Biology > 060311 Speciation and Extinction @ 40%
SEO Codes: 97 EXPANDING KNOWLEDGE > 970106 Expanding Knowledge in the Biological Sciences @ 100%
Downloads: Total: 3
More Statistics

Actions (Repository Staff Only)

Item Control Page Item Control Page