期刊
BIOLOGICAL CONTROL
卷 82, 期 -, 页码 31-39出版社
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.biocontrol.2014.11.013
关键词
Cydia pomonella; Ascogaster; Life histories; Parasitoid wasps; Perilampus; Phenology; Pristomerus
资金
- INRA Department Sante des Plantes & Environnement'' (SPE)
- ANR program PEERLESS'' [ANR-12-AGRO-0006]
- INRA
- PACA region
Population dynamics of parasitoid-host interaction is primary important knowledge to develop an efficient biological control strategy of insect pests. We analyzed the seasonal dynamic of the parasitoid community of the codling moth in two sites in South-Eastern France, which differed by the number of codling moth annual generations. Parasitism was estimated by sampling both young larvae collected within apple fruits and mature larvae in band traps wrapped around the trunk of the apple trees. Parasitism rates differed between sites and between young and mature larvae. Parasitism rate were higher in young larvae (29% in average) than in the mature ones (21% in average) and globally increased along the season among cohorts of mature codling moth larvae (from 4% to 34%). The three most abundant species in the parasitoid community - Ascogaster quadridentata, Pristomerus vulnerator and Perilampus tristis - were observed at both sites, in each codling moth cohort and in both young and mature larvae. Among all the parasitoids, the proportion of Perilampus - an hyper-parasitoid attacking both Ascogaster and Pristomerus primary parasitoids - increased among the codling moth cohorts (from 9% to 53%) whereas the proportion of Ascogaster decreased (from 82% to 35%). This shed light on the importance to characterize the dynamic of the whole trophic network (including hyperparasitism) to design biological control strategies. (C) 2014 Elsevier Inc. All rights reserved.
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