Muller Doriane, Giron David, Desouhant Emmanuel, Rey Benjamin, Casas Jérôme, Lefrique Nicolas, Visser Bertanne
Institut de Recherche sur la Biologie de l'Insecte (IRBI), UMR 7261 CNRS/Université François-Rabelais de Tours, Avenue Monge, 37200 Tours, France.
Université Lyon 1, Laboratoire de Biométrie et Biologie Evolutive, F-69000 Lyon, UMR CNRS 5558, F-69622 Villeurbanne, France.
J Insect Physiol. 2017 Aug;101:123-131. doi: 10.1016/j.jinsphys.2017.07.011. Epub 2017 Jul 19.
The internal physiological state of a mother can have major effects on her fitness and that of her offspring. We show that maternal effects in the parasitic wasp Eupelmus vuilleti become apparent when old mothers provision their eggs with less protein, sugar and lipid. Feeding from a host after hatching allows the offspring of old mothers to overcome initial shortages in sugars and lipids, but adult offspring of old mothers still emerged with lower protein and glycogen quantities. Reduced egg provisioning by old mothers had adverse consequences for the nutrient composition of adult female offspring, despite larval feeding from a high-quality host. Lower resource availability in adult offspring of old mothers can affect behavioural decisions, life histories and performance. Maternal effects on egg nutrient provisioning may thus affect nutrient availability and fitness of future generations in oviparous animals.
母亲的内部生理状态会对其自身以及后代的健康产生重大影响。我们发现，在寄生蜂尤氏真绥螨中，当老年母亲为卵提供的蛋白质、糖和脂质较少时，母体效应就会显现出来。孵化后从宿主获取食物能使老年母亲的后代克服最初的糖和脂质短缺，但老年母亲的成年后代体内的蛋白质和糖原含量仍然较低。尽管幼虫以优质宿主为食，但老年母亲减少的卵子供应对成年雌性后代的营养成分仍产生了不利影响。老年母亲成年后代较低的资源可用性会影响其行为决策、生活史和表现。因此，母体对卵子营养供应的影响可能会影响卵生动物后代的营养可用性和健康状况。
