Genetic variation for sex ratio traits within a natural population of a parasitic wasp, Nasonia vitripennis.
Genetic variation for sex ratio traits within a natural population of a parasitic wasp, Nasonia vitripennis.
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寄生黄蜂 Nasonia vitripennis 自然种群中性别比例特征的遗传变异。
DOI：
10.1093/genetics/124.2.373
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发表时间：
1990
期刊：
影响因子：
3.3
通讯作者：
ParkerJr,ED
中科院分区：
文献类型：
--
作者：
Orzack,SH;ParkerJr,ED
通过分析isofemale菌株提取的自然种群的丽翅夜蛾，我们检测到的性别比在新鲜的主机（第一性别比）和以前寄生的主机（第二性比）的变化。在简单假设的人口结构，这种应变间的异质性的第一性别比例的结果在异质性的适合度。菌株之间的平均适合度大约有10%的差异。(The第二性别比例的适合性分析见附文。平均第一性别比和平均第二性别比是不相关的。有显着的女性之间的异质性在一些菌株的第一性别比，但不是第二性别比。此外，直接发育和滞育的平均第一性比（而不是第二性比）显着相关。同一雌虫所产直接发育性比与滞育性比之间存在显著的相关性。不同的菌株对同一宿主中另一个雌性幼虫的性别比例和大小的影响不同。这些类型的性比性状的变异的数据是必要的进一步研究进展的性比进化。
By analyzing isofemale strains extracted from a natural population of Nasonia vitripennis, we detected variation for the sex ratios produced in fresh hosts (first sex ratios) and in previously parasitized hosts (second sex ratios). Under simple assumptions of population structure, this between-strain heterogeneity of first sex ratios results in heterogeneity of fitnesses. There is approximately ten percent difference in average fitnesses between the strains. (The fitnesses of second sex ratios are analyzed in the accompanying paper.) Average first and average second sex ratios are uncorrelated. There is significant between-female heterogeneity within some strains for first sex ratios but not for second sex ratios. In addition, the average direct-developing and diapause first sex ratios (but not second sex ratios) are significantly correlated. There are significant correlations between the direct-developing and diapause sex ratios produced by the same female. The strains differ in their effects on the sex ratio and size of another female's brood in the same host. Data on these types of variation for sex ratio traits are essential for further progress in the study of sex ratio evolution.