Copulation duration, but not paternity share, potentially mediates inbreeding avoidance in Drosophila montana
Ala-Honkola, O., Veltsos, P., Anderson, H., & Ritchie, M. G. (2014). Copulation duration, but not paternity share, potentially mediates inbreeding avoidance in Drosophila montana. Behavioral Ecology and Sociobiology, 68(12), 2013-2021. https://doi.org/10.1007/s00265-014-1807-7
Julkaistu sarjassa
Behavioral Ecology and SociobiologyPäivämäärä
2014Tekijänoikeudet
© Springer Verlag. This is a final draft version of an article whose final and definitive version has been published by Springer.
Studying the incidence of inbreeding avoidance is important for understanding the evolution of mating systems, especially in the context of mate choice for genetic compatibility. We investigated whether inbreeding avoidance mechanisms have evolved in the malt fly, Drosophila montana, by measuring mating latency (a measure of male attractiveness), copulation duration, days to remating, offspring production, and the proportion of offspring sired by the first (P1) and second (P2) male to mate in full-sibling and unrelated pairs. SNP markers were used for paternity analysis and for calculating pairwise relatedness values (genotype sharing) between mating pairs. We found 18 % inbreeding depression in egg-to-adult viability, suggesting that mating with close relatives is costly. Copulation duration was shorter between previously mated females and their brothers than with unrelated males. Based on an earlier study, shorter copulation is likely to decrease the number of inbred progeny by decreasing female remating time. However, shorter copulations did not lead to lower paternity (P2) of full-sibling males. Progeny production of double-mated females was lower when the second male was a full-sibling as compared to an unrelated male, but we could not distinguish between inbreeding depression and lower female reproductive effort after mating with a relative. Relatedness estimates based on 34 SNPs did not detect any quantitative effect of relatedness variation on copulation duration and progeny production. We suggest that inbreeding depression has been strong enough to select for inbreeding avoidance mechanisms in our Finnish D. montana population.
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Julkaisija
SpringerISSN Hae Julkaisufoorumista
0340-5443
Alkuperäislähde
http://link.springer.com/article/10.1007%2Fs00265-014-1807-7Julkaisu tutkimustietojärjestelmässä
https://converis.jyu.fi/converis/portal/detail/Publication/23971333
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