Copidosoma floridanum (Hymenoptera: Encyrtidae) Rapidly Alters Production of Soldier Embryos in Response to Competition.
Copidosoma floridanum (Hymenoptera: Encyrtidae) Rapidly Alters Production of Soldier Embryos in Response to Competition.
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Copidosoma floridanum（膜翅目：Encyrtidae）响应竞争而迅速改变士兵胚胎的产生。
DOI：
10.1093/aesa/sax056
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发表时间：
2017
影响因子：
2.3
通讯作者：
Strand,MichaelR
中科院分区：
文献类型：
--
作者：
Smith,MargaretS;Shirley,Andrew;Strand,MichaelR
大多数群居昆虫是自由生活的，并产生对外部环境线索做出反应的种姓。相比之下，种姓形成的多胚胎昆虫都是在寄主昆虫体内形成社会群体的内寄生蜂。研究得最好的多胚胎黄蜂是Copidosoma floridanum(Ashmead)，它产生∼3,000克隆后代，发育成两个等级，称为生殖幼虫和士兵幼虫。该物种的种姓决定是由胚胎是否遗传初级生殖细胞(PGC)来决定的。先前的研究结果表明，c.Foridanum增加了每个寄主产生的雌性士兵幼虫的比例，以响应其他寄生蜂，如破坏微囊蜂。在这里，我们表明，种姓比例的变化是通过增加缺乏PGCs的胚胎的形成而发生的。我们的结果进一步表明，士兵产量的增加是对绒毛膜引起的多寄生性的一种特殊反应。拆迁令。
Most social insects are free living and produce castes that develop in response to extrinsic environmental cues. Caste-forming polyembryonic insects, in contrast, are all endoparasitoids that form social groups inside the bodies of host insects. The best studied polyembryonic wasp isCopidosoma floridanum(Ashmead), which produces ∼3,000 clonal offspring that develop into two castes named reproductive and soldier larvae. Caste determination in this species is mediated by whether or not embryos inherit primary germ cells (PGCs). Prior results showed thatC. floridanumincreases the proportion of female soldier larvae it produces per host in response to other parasitoids likeMicroplitis demolitor. Here we show that caste ratio shifts occur through increased formation of embryos lacking PGCs. Our results further indicated that increased soldier production was a specific response to multiparasitism elicited by the chorion ofM. demolitoreggs.