DISTANT OLFACTORY RESPONSE OF THE CABBAGE SEED WEEVIL, CEUTORHYNCHUS-ASSIMILIS, TO OILSEED RAPE ODOR IN THE FIELD

被引：25

作者：

EVANS, KA ^{[1
]}

ALLENWILLIAMS, LJ ^{[1
]}

机构：

[1] UNIV HERTFORDSHIRE,DIV ENVIRONM SCI,HERTFORD,HERTS,ENGLAND

来源：

PHYSIOLOGICAL ENTOMOLOGY | 1993年 / 18卷 / 03期

关键词：

CEUTORHYNCHUS-ASSIMILIS; BRASSICA-NAPUS; ODOR-MEDIATED ANEMOTAXIS; OLFACTION; HOST-PLANT LOCATION; DISPERSAL;

D O I：

10.1111/j.1365-3032.1993.tb00596.x

中图分类号：

Q96 [昆虫学];

学科分类号：

摘要：

The olfactory orientation of adult cabbage seed weevils (Ceutorhynchus assimilis Payk.) from a distance of 20 m to extracts of oilseed rape (Brassica napus L.) was studied in the field using mark-release-recapture experiments. Male and female weevils dispersed upwind from the centre of a circular array of traps baited with oilseed rape extracts. In the absence of host-plant odour, female weevils dispersed randomly, and male weevils downwind. Percentage recapture of weevils was significantly greater in traps baited with rape flower than rape leaf extracts. Significantly fewer weevils were recaptured in unbaited traps compared to traps baited with rape flower or leaf extracts. We suggest that seed weevils can use odour-mediated upwind anemotaxis to locate their host-plants from distances of at least 20 m.

引用

页码：251 / 256

页数：6

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