Female mate choice across mating stages and between sequential mates in flour beetles
Female mate choice across mating stages and between sequential mates in flour beetles
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DOI：
10.1111/j.1420-9101.2007.01432.x
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发表时间：
2007-11-01
影响因子：
2.1
通讯作者：
Lewis, S. M.
中科院分区：
文献类型：
--
作者：
Fedina, T. Y.;Lewis, S. M.
很少有研究探讨如何女性交配前的选择与交配和交配后的过程的结果。研究表明，多雄赤拟谷盗雌性在交配前根据嗅觉线索对雄性进行区分，在交配过程中也通过多种机制进行隐蔽选择。这项研究测试了男性的相对吸引力是否能预测他在交配过程中的授精成功。与男性嗅觉线索的生物测定被用来排名两个男性更多和更少的吸引力的女性，每个女性，然后交配，要么她更有吸引力的男性其次是不太有吸引力的男性，反之亦然。第二次交配后立即解剖发现，与那些与不太有吸引力的男性重新交配的女性相比，与更有吸引力的男性重新交配的女性成功授精的百分比显着较高。这些结果表明，交配过程中的隐性雌性选择加强了T。castaneum，并建议女性可以使用神秘的选择，以贸易更有吸引力的男性，可能获得更好的表型或遗传质量的公鹿。
Few studies have examined how female premating choice correlates with the outcome of copulatory and post-copulatory processes. It has been shown that polyandrous Tribolium castaneum females discriminate among males before mating based on olfactory cues, and also exert cryptic choice during mating through several mechanisms. This study tested whether a male's relative attractiveness predicted his insemination success during copulation. Bioassays with male olfactory cues were used to rank two males as more and less attractive to females; each female was then mated to either her more attractive male followed by less attractive male, or vice versa. Dissections immediately after second copulations revealed a significantly higher percent of successful inseminations for females that remated with more attractive males compared with those that remated with less attractive males. These results indicate that cryptic female choice during copulation reinforces precopulatory female choice in T. castaneum, and suggest that females could use cryptic choice to trade up to more attractive males, possibly gaining better phenotypic or genetic quality of sires.