No evidence of mate discrimination against males carrying a sex ratio distorter in Drosophila pseudoobscura
No evidence of mate discrimination against males carrying a sex ratio distorter in Drosophila pseudoobscura
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没有证据表明果蝇对携带性别比例扭曲基因的雄性存在配偶歧视
DOI：
10.1007/s00265-011-1304-1
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发表时间：
2011
影响因子：
2.3
通讯作者：
Price T
中科院分区：
文献类型：
--
作者：
Price T
通过操纵精子发生而传播的自私遗传因子（SGEs）通常对携带它们的雄性具有高度有害的影响。与携带SGEs的男性交配的女性也会付出巨大的代价：她们得到的精子数量更少，质量更差，她们的后代将遗传有害的等位基因，她们后代的性别比例将倾向于更普通的性别。为了抵消这些成本，雌性因此更倾向于与不携带性别比例扭曲或其他有害的自私基因元素的雄性交配。然而，尽管有潜在的成本，很少有女性选择不携带SGEs的男性的例子。我们在果蝇中寻找雌性偏好携带昂贵的减数分裂驱动x染色体性比（SR）的雄性的证据。在一系列的5个非竞争性配偶偏好实验中，我们没有发现雌性更倾向于与非竞争性雄性交配的证据。我们使用了五个独立的实验，涉及800多名女性，这使得这种差异的缺乏不太可能是由于低权力或简单的机会。我们认为，雌性对携带sge的雄性缺乏选择可能是由于sge与其他等位基因难以区分的强烈选择。此外，一妻多夫制，无论是在接收携带sge的雄性射精的直接反应，还是在与携带sge的雄性交配的风险下不加选择地进行，都可能是雌性限制其后代暴露于sge的另一种反应。
Selfish genetic elements (SGEs) that spread by manipulating spermatogenesis often have highly deleterious effects on males that carry them. Females that mate with male carriers of SGEs can also suffer significant costs: they receive fewer and poorer-quality sperm, their offspring will inherit the deleterious allele, and the sex ratio of their offspring will be biased towards the more common sex. To counter these costs, females are therefore expected to prefer to mate with males that do not carry sex ratio distorters or other deleterious selfish genetic elements. However, despite the potential costs, there are few examples of female choice against males carrying SGEs. We searched for evidence of a female preference in fruit flyDrosophila pseudoobscuraagainst males carrying a costly meiotic driving X-chromosomeSex Ratio(SR). In a series of five non-competitive mate preference experiments, we find no evidence that females prefer to mate with non-SRmales. Our use of five separate experiments, involving more than 800 females, makes it unlikely that this lack of a difference was due to low power or simple chance. We suggest that the lack of female choice against SGE-carrying males may be due to strong selection on SGEs to be indistinguishable from alternative alleles. Furthermore, polyandry, either in direct response to receiving an ejaculate from an SGE-carrying male or carried out indiscriminately when at risk of mating with carriers, may be an alternative response by females to limit the exposure of their offspring to SGEs.
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影响因子：
2.1
作者：
HAIG, D;BERGSTROM, CT
通讯作者：
BERGSTROM, CT
影响因子：
56.9
作者：
David Policansky;J. Ellison
通讯作者：
J. Ellison
DOI：
10.4159/9780674029118
发表时间：
2006-01
期刊：
--
影响因子：
--
作者：
A. Burt;R. Trivers
通讯作者：
A. Burt;R. Trivers
茎眼果蝇的雄性眼跨度通过减数分裂驱动抑制表明遗传质量
影响因子：
64.8
作者：
G. Wilkinson;Daven C. Presgraves;Lili Crymes
通讯作者：
Lili Crymes
精子异形果蝇的交配系统进化。
影响因子：
2.2
作者：
R. Snook;T. Markow
通讯作者：
T. Markow