Sexual traits are sensitive to genetic stress and predict extinction risk in the stalk-eyed fly, Diasemopsis meigenii.
Bottom Line: However, this hypothesis has received little testing and results are inconsistent.This heterosis was greater in male eyespan than in male wing length, but not female eyespan.The elevated response in male eyespan to genetic stress mirrored the result found using environmental stress during larval development and suggests that common mechanisms underlie the patterns observed.
Affiliation: Department of Genetics, Evolution and Environment, University College London, Darwin Building, Gower Street, London, WC1E 6BT, United Kingdom.Show MeSH
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Mentions: To test for the presence of inbreeding depression, the inbred lines were used to generate outbred and inbred crosses using a modified protocol developed by Prokop et al. (2010) shown in Figure1. Crosses were carried out using virgin flies collected from 17 inbred lines that had undergone at least 11 generations of full-sibling inbreeding. For each outbred cross (line i × line j), two reciprocal families were set up (one with male i × female j, the other with male j × female i). To balance this, each inbred cross (line i × line i) was also replicated (Fig.1). This design meant that the same number of inbred and outbred crosses were set up.
Affiliation: Department of Genetics, Evolution and Environment, University College London, Darwin Building, Gower Street, London, WC1E 6BT, United Kingdom.