CONTRARY CHOICES - POSSIBLE EXPLOITATION OF ENEMY-FREE SPACE BY HERBIVOROUS INSECTS IN CULTIVATED VS WILD CRUCIFERS

被引:50
作者
FOX, LR
EISENBACH, J
机构
[1] Department of Biology, University of California, Santa Cruz, 95064, CA
关键词
SPECIALIZATION; HERBIVORES; PARASITOIDS; ENEMY-FREE SPACE;
D O I
10.1007/BF00317166
中图分类号
Q14 [生态学(生物生态学)];
学科分类号
071012 ; 0713 ;
摘要
The pressure to escape natural enemies may shape how herbivorous insects use their plant resources. On wild crucifers, ovipositional preferences of the diamondback moth (Plutella xylostella; DBM) were similar to searching preferences of its main parasitoid, an ichneumonid wasp (Diadegma insulare). But on cultivated crucifers, these species had opposite preferences. In addition, DBM ovipositional preferences did not correlate with growth or reproduction on several foodplants. We interpret these patterns as evidence of evolution for use of enemy-free space in agricultural systems.
引用
收藏
页码:574 / 579
页数:6
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