Phenotypic and genetic variation in male genitalia in the seedbug, Lygaeus equestris (Heteroptera)
Phenotypic and genetic variation in male genitalia in the seedbug, Lygaeus equestris (Heteroptera)
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DOI：
10.1111/j.1095-8312.2009.01292.x
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发表时间：
2009-10-01
影响因子：
1.9
通讯作者：
Wedell, Nina
中科院分区：
文献类型：
--
作者：
Higgins, Sahran L.;Hosken, David J.;Wedell, Nina
雄性生殖器通过性选择进化，在昆虫中，往往表现为负的静态异速，低表型变异，通常相对较小。人们对男性生殖器的遗传变异和遗传能力知之甚少。此外，在隐伏器官大大延长的情况下，尚不清楚是否也适用典型的生殖器缩放和变异模式。摘要本研究研究了马足蛾（Lygaeus equestris）雄性生殖器官长度的异速性、变异和遗传力。我们发现，尽管外阴长度很大，但外阴长度呈负异速生长，与非外阴性状相比变化不大。此外，生殖器长度具有显著的遗传和进化性。(C) 2009 .中国生物医学工程学报，中国生物医学工程学报，2009,28(4):444 - 444。
Male genitalia evolve through sexual selection and, in insects, tend to show negative static allometry, low phenotypic variation, and are usually relatively small. Much less is known about the genetic variation and heritability of male genitalia. Additionally, in instances where the intromittent organ is greatly elongated, it is unclear whether typical patterns of genital scaling and variation also apply. In the present study, we investigated the allometry, variation, and heritability of male genital length in the seedbug, Lygaeus equestris, a species with a greatly elongated intromittent organ (i.e. almost as long as male body size). We found that genital length was negatively allometric, in spite of its great length, and was no more variable than nongenital traits. Additionally, genital length was significantly heritable and had considerable evolvability. (C) 2009 The Linnean Society of London, Biological Journal of the Linnean Society, 2009, 98, 400-405.