Acoustic cues alter perceived sperm competition risk in the field cricket Teleogryllus oceanicus
Acoustic cues alter perceived sperm competition risk in the field cricket Teleogryllus oceanicus
复制标题
DOI：
10.1093/beheco/art009
复制
发表时间：
2013-07-01
影响因子：
2.4
通讯作者：
Simmons, Leigh W.
中科院分区：
文献类型：
--
作者：
Gray, Brian;Simmons, Leigh W.
精子竞争博弈论预测，男性应该通过增加射精消耗来应对精子竞争风险的增加。这一预测得到了大量不同分类群的支持。然而，男性用来评估策略射精的风险和适应性回报的线索还不太清楚。我们通过操纵雄性蟋蟀对声信号同种的体验，探讨了声信号在精子竞争风险评估中的作用。与在隔音环境中饲养的雄性相比，在歌声密集的环境中饲养的雄性模仿高精子竞争风险，产生了更高比例的活精子。然而，声经验对竞争受精成功的影响微弱且不显著。我们认为，女性对父权的影响可能会对谨慎配置的男性适应性回报产生强烈的调节作用，并呼吁更多的研究来解决策略射精对男性适应性的影响。
Sperm competition game theory predicts that males should respond to increasing sperm competition risk by increasing ejaculate expenditure. There is considerable support for this prediction from a diverse range of taxa. However, the cues males use to assess risk and the fitness returns for strategic ejaculation are less well understood. We explored the role of acoustic cues in the assessment of sperm competition risk by manipulating male experience of acoustically signaling conspecifics in the field cricket Teleogryllus oceanicus. Compared with males reared in acoustic isolation, males reared in song-dense environments mimicking a high sperm competition risk produced ejaculates with a greater percentage of viable sperm. However, acoustic experience had only a weak and nonsignificant effect on competitive fertilization success. We argue that female influences on paternity are likely to have a strong moderating effect on male fitness returns from prudent allocation and call for more studies that address the consequences of strategic ejaculation for male fitness.