BIOLOGY AND ECOLOGY OF THE COTTONWOOD LEAF BEETLE, CHRYSOMELA-SCRIPTA (COLEOPTERA, CHRYSOMELIDAE), ON TISSUE CULTURED HYBRID AIGEIROS (POPULUS X EURAMERICANA) SUBCLONES IN WISCONSIN

被引：33

作者：

BURKOT, TR

BENJAMIN, DM

机构：

[1] Department of Entomology, University of Wisconsin

来源：

CANADIAN ENTOMOLOGIST | 1979年 / 111卷 / 05期

关键词：

D O I：

10.4039/Ent111551-5

中图分类号：

Q96 [昆虫学];

学科分类号：

摘要：

Adults and larvae of the cottonwood leaf beetle, Chrysomela scripra Fab., defoliated tissue cultured Aigeiros (Populus x euramericana (Dode) Guinier) subclones and destroyed apical tips. Fecundity was 510±l53 eggs (X±S). Four generations occurred between May and September in southern Wisconsin. Maximal insect numbers and damage occurred in the third generation. The minimal developmental threshold was 10.8°C with a mean 257±226 day-degree (°C) required per generation. Important biological control agents included Coleomegilla maculara, which consumed up to 25% of the eggs, and Shizonatus latus, a pteromalid parasite, which destroyed up to 26% of the pupae.© 1979, Entomological Society of Canada. All rights reserved.

引用

页码：551 / 556

页数：6