The ectoparasitic wasp Eulophus pennicornis (Hymenoptera: Eulophidae) uses instar-specific endocrine disruption strategies to suppress the development of its host Lacanobia oleracea (Lepidoptera: Noctuidae)
The ectoparasitic wasp Eulophus pennicornis (Hymenoptera: Eulophidae) uses instar-specific endocrine disruption strategies to suppress the development of its host Lacanobia oleracea (Lepidoptera: Noctuidae)
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DOI：
10.1016/j.jinsphys.2006.08.003
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发表时间：
2006-11-01
影响因子：
2.2
通讯作者：
Cusson, Michel
中科院分区：
文献类型：
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作者：
Edwards, John P.;Bell, Howard A.;Cusson, Michel
为了成功地完成其发展，群居的外寄生蜂Eulophus pennicornis必须抑制其寄主，Lacanobia oleracea的蜕皮。在本研究中，我们研究的可能性，蜕皮和rnetamorphosis-associated内分泌事件可能会被破坏的毛虫寄生作为新蜕皮的最后（第六）龄。保幼激素（JH）滴度在第2和第5天的最后体育场是显着较高的（> 100倍）在寄生比未寄生的主机，其中JH基本上是不存在的。升高的JH水平与血淋巴JH酯酶（JHE）活性降低相关（降低20%）。
To successfully complete its development, the gregarious ectoparasitoid Eulophus pennicornis must inhibit the moult of its host, Lacanobia oleracea. In the present study, we examined the possibility that moult- and rnetamorphosis-associated endocrine events may be disrupted in caterpillars parasitized as newly moulted last (sixth) instars. Juvenile hormone (JH) titres on days 2 and 5 of the final stadium were significantly higher (> 100 fold) in parasitized than in non-parasitized hosts, in which JH was essentially absent. Elevated JH levels were associated with reduced haemolymph JH esterase (JHE) activity (down by