Food web structure of parasitoids in greenhouses is affected by surrounding landscape at different spatial scales.

ABSTRACT: Landscape management affects species interactions and can have notable effects on food web structure. Local parasitoid populations in greenhouses usually migrate from outside crops; biological control of greenhouse aphids may be thus highly dependent on the composition of surrounding landscape. However, it is less clear how surrounding landscape composition affects primary-hyperparasitoid food webs and pest control services in greenhouses. We investigated the food web of parasitoids on melon-cotton aphid (Aphis gossypii Glover) in watermelon greenhouses in two suburban Beijing counties over two years. We used the quantitative food web metrics (generality, vulnerability, link density, and interaction evenness) to assess the effects of landscape composition on primary-hyperparasitoid food we

SUBMITTER: Dong Z 

PROVIDER: S-EPMC6560093 | biostudies-literature | 2019 Jun

REPOSITORIES: biostudies-literature