Transgenerational phenotypic plasticity of diapause induction and related fitness cost in a commercial strain of the parasitoid Aphidius ervi Haliday
作者机构：Department of EntomologyUniversity College of AgricultureUniversity of SargodhaSargodhaPakistan Earth and Life InstituteBiodiversity Research CentreUniversite catholique de LouvainLouvain-la-Neuve1348Belgium
出 版 物：《Insect Science》 (昆虫科学（英文版）)
年 卷 期：2021年第28卷第3期
页 面：780-792页
核心收录：
学科分类：0710[理学-生物学] 07[理学] 09[农学]
基 金：Biodiversity Research Center, Universit? F.R.S.‐FNRS Fonds De La Recherche Scientifique - FNRS, FNRS Higher Education Commision, Pakistan, HEC
主 题：dormancy life-history traits mummy color photothermal regimes transgenerational plasticity
摘 要：Diapause is an adaptation that insects have evolved to synchronize their life cycle with that of seasonal climatic changes and resources ***,cues for its induction are not always clear and,in some cases,a maternal effect may be *** the population level,just a part of the individuals may exhibit diapause with important consequences in terms of winter ***,clear indicators of diapause state are difficult to *** induction was thus investigated in the aphid parasitoid species Aphidius ervi Haliday(Hymenoptera:Braconidae)developing in the aphid Sitobion avenae(Hemiptera:Aphididae)at four crossed photothermal regimes(16℃and 8℃,16:8 h L:D and 8:16 h L:D),and during 2 successive *** analyzed the reliability of changes in mummy color to assess for the diapausing state compared to dissections,and we measured parasitoid morphological and physiological *** observed that the proportion of dark brown mummies increased after one generation under low photothermal regime compared to other *** diapause was recorded at 16℃,16:8 h L:D,while we observed 16.2%and 67.5%diapause incidence at 8℃,8:16 h L:D,at 1st and 2nd generation,*** induction is thus increased by short day-length conditions and low temperatures as well as by maternal *** parasitoid life-history traits(weight,size,fat content,water content,egg-load,and longevity)were affected by the photothermal regime and/or the *** results raise new questions on the environmental thresholds needed to induce diapause and on survival and adaptation potential of commercially available parasitoid strains in different environments.
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