Differential response of two agroecosystem predators, Pterostichus melanarius (Coleoptera: Carabidae) and Coccinella septempunctata (Coleoptera: Coccinellidae), to habitat-composition and fragmentation-scale manipulations

被引:23
作者
Banks, JE [1 ]
机构
[1] Univ Washington, Dept Zool, Seattle, WA 98195 USA
基金
美国国家科学基金会;
关键词
D O I
10.4039/Ent131645-5
中图分类号
Q96 [昆虫学];
学科分类号
摘要
Using alternating patches of weeds and crop [broccoli, Brassica oleracea (L.) (Brassicaceae)], vegetation composition and the spatial scale at which the vegetation was fragmented were manipulated in a factorial design field experiment. The effects of these manipulations were different for two common agroecosystem predators sampled. Sevenspotted lady beetles, Coccinella septempunctata (L.), were unaffected by vegetation-composition treatments but responded strongly to fragmentation-scale manipulations. The beetle Pterostichus melanarius (Illiger) was unaffected by both fragmentation-scale and vegetation-composition manipulations. These findings highlight the challenge of developing a predictive theory of the effects of vegetation diversification on assemblages of predators in agroecosystems.
引用
收藏
页码:645 / 657
页数:13
相关论文
共 53 条
[41]   ORGANIZATION OF A PLANT-ARTHROPOD ASSOCIATION IN SIMPLE AND DIVERSE HABITATS - FAUNA OF COLLARDS (BRASSICA-OLERACEA) [J].
ROOT, RB .
ECOLOGICAL MONOGRAPHS, 1973, 43 (01) :95-120
[43]  
Scheiner Samuel M., 1993, P94
[45]   SAMPLING CARABID ASSEMBLAGES WITH PITFALL TRAPS - THE MADNESS AND THE METHOD [J].
SPENCE, JR ;
NIEMELA, JK .
CANADIAN ENTOMOLOGIST, 1994, 126 (03) :881-894
[46]   ARTHROPODS AND OTHER INVERTEBRATES IN CONSERVATION-TILLAGE AGRICULTURE [J].
STINNER, BR ;
HOUSE, GJ .
ANNUAL REVIEW OF ENTOMOLOGY, 1990, 35 :299-318
[47]   THE EFFECTS OF CROP DIVERSIFICATION ON HERBIVOROUS INSECTS - A METAANALYSIS APPROACH [J].
TONHASCA, A ;
BYRNE, DN .
ECOLOGICAL ENTOMOLOGY, 1994, 19 (03) :239-244
[48]  
TONHASCA A, 1993, ENTOMOL EXP APPL, V68, P279, DOI 10.1007/BF02380781
[49]  
von Ende Carl N., 1993, P113
[50]  
WALLIN H, 1992, ENTOMOL EXP APPL, V65, P129, DOI 10.1007/BF00221363