Lifetime gains of host-feeding in a synovigenic parasitic wasp
Lifetime gains of host-feeding in a synovigenic parasitic wasp
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DOI：
10.1111/j.0307-6962.2004.00414.x
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发表时间：
2004-12-01
影响因子：
1.5
通讯作者：
Casas, J
中科院分区：
文献类型：
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作者：
Giron, D;Pincebourde, S;Casas, J
了解行为决策相对于主机使用觅食寄生蜂喂养或繁殖不仅需要研究代谢途径，其次是营养物质，但也量化的终身健身收益的每种替代行为。通过使用观察和操作的方法相结合，一生的主机喂养收益的寄生蜂Eupelmus vuilletti的繁殖力和寿命方面进行了测量。寄主喂养可以增加产卵量和寿命。繁殖力的增加主要取决于获得的脂质量，而寿命的延长主要取决于碳水化合物。通过寄主取食获得的蛋白质与寄生蜂的产卵有关，但蛋白质的摄入对E. vuilletti。通过宿主喂养获得的营养物质和投入鸡蛋的量是可变的，并在动物的一生中发生变化。因此，一生喂养增益最好理解通过构建动态预算运行在整个生命周期的昆虫。
Understanding behavioural decisions relative to host use for feeding or reproduction by foraging parasitoids requires not only the study of metabolic pathways followed by nutrients, but also the quantification of lifetime fitness gains of each alternative behaviour. By using a combination of observational and manipulative approaches, the lifetime host-feeding gains are measured both in terms of fecundity and longevity in the parasitoid Eupelmus vuilletti. Host-feeding increases both egg production and longevity. The increase in fecundity is mainly determined by the amount of lipids obtained whereas the lifespan extension is mainly determined by carbohydrates. Proteins obtained through host-feeding have been implicated previously in egg production by parasitoids but protein intake has no effect on fecundity and longevity in E. vuilletti. The amount of nutrients gained through host-feeding and invested in eggs is variable and changes over the lifetime of the animal. Therefore, lifetime feeding gains are best understood through the construction of dynamical budgets running over the entire lifespan of an insect.