UCL Division of Biosciences


Meiotic drive doesn't cause condition-dependent reduction of the sexual ornament in stalk-eyed flies

4 June 2021

Reduced eyespan likely reflects compensatory resource allocation to different traits in response to drive-mediated destruction of sperm.

Ronan Finnegan publication

Using the ‘sex-ratio’ (SR) meiotic drive system of the Malaysian stalk-eyed fly Teleopsis dalmanni, eyespan in males carrying the SR chromosome was studied, as this trait is a highly exaggerated, sexually dimorphic trait, known to have heightened condition-dependent expression. Results do not support the hypothesis that reduced sexual ornament size in meiotic drive males is due to a condition-dependent response to the putative increase in mutation load.