Asynchrony between Host Plant and Insects-Defoliator within a Tritrophic System: The Role of Herbivore Innate Immunity
作者： Vyacheslav V. Martemyanov , Sergey V. Pavlushin , Ivan M. Dubovskiy , Yuliya V. Yushkova , Sergey V. Morosov
DOI: 10.1371/JOURNAL.PONE.0130988
关键词:
摘要: The effects of asynchrony in the phenology spring-feeding insect-defoliators and their host plants on insects’ fitness, as well importance this effect for population dynamics outbreaking species insects, is a widespread well-documented phenomenon. However, spreading phenomenon through food chain, especially those mechanisms operating spreading, are still unclear. In paper, we study seasonally declined leafquality (estimated terms phenolics nitrogen content) herbivore immune parameters resistance against pathogen by using silver birch Betula pendula—gypsy moth Lymantria dispar—nucleopolyhedrovirus tritrophic system. We show that phenological mismatch induced delay emergence gypsy larvae following feeding mature leaves has negative female pupal weight, rate larval development activity phenoloxidase plasma haemolymph. addition, susceptibility to exogenous nucleopolyhydrovirus infection covert virus activation were both enhanced due mismatch. observed insect-baculovirus interaction may partially explain strong fast fluctuations often studied part defoliator area. This also reveals some indirect related plant quality, which operate insect innate status affect endogenous virus.
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