caa a22 4500 397570864 CHVBK 20180308164841.0 cr unu---uuuuu 161202e19960401xx s 000 0 eng 10.1093/ee/25.2.495 doi (NATIONALLICENCE)oxford-10.1093/ee/25.2.495 Habitat Diversification for Improving Biological Control: Abundance of Anagrus epos (Hymenoptera: Mymaridae) in Grape Vineyards [Elektronische Daten] [Brook C. Murphy, Jay A. Rosenheim, Jeffrey Granett] A frequently cited habitat diversification tactic is the use of prune tree refuges that support overwintering populations of Anagrus epos (Girault), a mymarid egg parasite of the western grape leafhopper, Erythroneura elegantula Osborn, in vineyards. Here we test the effect of prune trees on early-season abundance of adult A. epos in vineyards. A. epos was found in vineyards downwind of prune trees at more than twice the densities of vineyards lacking prune trees, despite significant variation in A. epos immigration from sources outside the prune tree-vineyard system. Densities of A. epos overwintering within prune trees explained a significant amount of the variation in A. epos trap capture in vineyards. Furthermore, another factor associated with prune trees was found to influence A. epos abundance in vineyards: a windbreak effect created by the prune trees concentrated dispersing A. epos on the leeward side of the prune trees, thereby further enhancing A. epos numbers. © 1996 Entomological Society of America Physiological and Chemical Ecology nationallicence Anagrus epos nationallicence Erythroneura elegantula nationallicence habitat diversification nationallicence conservation biological control nationallicence grape nationallicence Murphy Brook C. Department of Entomology, University of California, Davis, CA 95616 aut Rosenheim Jay A. Department of Entomology, University of California, Davis, CA 95616 aut Granett Jeffrey Department of Entomology, University of California, Davis, CA 95616 aut Environmental Entomology Oxford University Press 25/2(1996-04-01), 495-504 0046-225X 25:2<495 1996 25 ee https://doi.org/10.1093/ee/25.2.495 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1093/ee/25.2.495 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Murphy Brook C. Department of Entomology, University of California, Davis, CA 95616 aut NATIONALLICENCE 700 1- Rosenheim Jay A. Department of Entomology, University of California, Davis, CA 95616 aut NATIONALLICENCE 700 1- Granett Jeffrey Department of Entomology, University of California, Davis, CA 95616 aut NATIONALLICENCE 773 0- Environmental Entomology Oxford University Press 25/2(1996-04-01), 495-504 0046-225X 25:2<495 1996 25 ee Metadata rights reserved CC BY-NC-4.0 http://creativecommons.org/licenses/by-nc/4.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-oxford