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Unfamiliar-Female Mating Advantage among Clones of Unisexual Fish (Poeciliopsis: Poeciliidae)

Valerie Keegan-Rogers
Copeia
Vol. 1984, No. 1 (Feb. 23, 1984), pp. 169-174
DOI: 10.2307/1445049
Stable URL: http://www.jstor.org/stable/1445049
Page Count: 6
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Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
Unfamiliar-Female Mating Advantage among Clones of Unisexual Fish (Poeciliopsis: Poeciliidae)
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Abstract

Unisexual fish in the genus Poeciliopsis require males of sympatric bisexual species for insemination. Males tend to avoid mating with the unisexual hybrids, leaving a significant proportion unfertilized. This study demonstrates that males are more likely to mate with unisexuals of unfamiliar clones than with those of familiar clones. This unfamiliar-female advantage may translate into a rare-female advantage in nature, favoring uncommon clones and thereby contributing to the coexistence of numerous unisexual clones.

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