Life-history responses of insects to water-deficit stress: a case study with the aphid Sitobion avenae.

ABSTRACT:

Background

Drought may become one of the greatest challenges for cereal production under future warming scenarios, and its impact on insect pest outbreaks is still controversial. To address this issue, life-history responses of the English grain aphid, Sitobion avenae (Fabricius), from three areas of different drought levels were compared under three water treatments.

Results

Significant differences were identified in developmental time, fecundity and adult weight among S. avenae clones from moist, semiarid and arid areas under all the three water treatments. Semiarid and arid area clones tended to have higher heritability for test life-history traits than moist area clones. We identified significant selection of water-deficit on the developmental time of 1st instar nymphs a

SUBMITTER: Liu D 

PROVIDER: S-EPMC5975275 | biostudies-literature | 2018 May

REPOSITORIES: biostudies-literature