Variation in female choice of mates: condition influences selectivity
Variation in female choice of mates: condition influences selectivity
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DOI：
10.1016/j.anbehav.2006.01.017
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发表时间：
2006-09-01
期刊：
影响因子：
2.5
通讯作者：
Foster, Valerie S.
中科院分区：
文献类型：
--
作者：
Burley, Nancy Tyler;Foster, Valerie S.
种群内表观配偶选择变异的发生和意义还知之甚少。虽然差异的一种可能解释是个体的择偶偏好不同，但另一种可能性是个体在择偶选择性或“挑剔”方面存在差异：也就是说，一些个体可能愿意接受不如其他个体有吸引力的交配对象。后一种可能性可能是由于双向交配选择和高质量交配伙伴与低质量交配伙伴的差异交配途径造成的。在这里，我们改变了雌性斑马雀的身体状况，通过适度修剪它们的飞行羽毛来探索个体根据自己的条件调整选择性的可能性。我们比较了修剪的和完整的翅膀羽毛个体的选择性。与完整的翅膀相比，雌性雀在剪断翅膀时与有魅力的雄性鸟交往的时间更少。为了确定它们的选择是否受到感知到它们状态变化的刺激性雄性行为的影响，我们进行了一项同伴实验，测量雄性伴侣对翅膀被剪短的雌性和完整翅膀的雌性的选择；没有发现对被剪短的雌性的歧视。总而言之，这些结果表明，雌性对配偶的选择性是根据她对自己状况或交配能力的评估而动态调整的。为了更好地理解偏好函数和配偶偏好的遗传基础，有必要进一步研究实现的和理想的配偶偏好之间的关系。(C)2006年，动物行为研究协会。爱思唯尔有限公司出版。保留所有权利。
The occurrence and significance of variation in apparent mate choice within populations are poorly understood. While one possible explanation for variation is that individuals differ in their mate preferences, an alternative possibility is that individuals vary in their mate selectivity or 'choosiness': that is, some individuals may be willing to accept less attractive mating partners than are others. This latter possibility is likely to result from bidirectional mate choice and differential mating access of high- versus low-quality mating partners. Here we altered the physical condition of female zebra finches, Taeniopygia gultata casta-notis, through modest trimming of their flight feathers to explore the possibility that individuals adjust selectivity in response to their own condition. We compared the selectivity of individuals with clipped versus intact wing feathers. Female finches spent less time associating with attractive males when their wings were clipped than when wings were intact. To ascertain whether their choices were influenced by the behaviour of stimulus males that perceived their altered status, we performed a companion experiment that measured male mate choice of females with clipped versus intact wings; no discrimination against clipped females was found. Collectively, these results indicate that a female's mate selectivity is dynamically adjusted based on her assessment of her own condition or mate-getting ability. Future studies that investigate the relationship between realized and ideal mate preferences are necessary to better understand preference functions and the genetic basis of mate preferences. (c) 2006 The Association for the Study of Animal Behaviour. Published by Elsevier Ltd. All rights reserved.