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Field cage trials with thiotepa-sterilised males of the potato moth, Phthorimaea operculella (Zeller) (Lepidoptera: Gelechiidae)

Published online by Cambridge University Press:  10 July 2009

M. N. Nabi
Affiliation:
Department of Entomology, Lincoln University College of Agriculture, Canterbury, New Zealand

Abstract

Males of Phthorimaea operculella (Zell.) less than 24 h old were sterilised with thiotepa by circulatory fumigation in the laboratory and then released in cages in a potato field in New Zealand. Laboratory-reared sterile males, normal males and females were released in different ratios. Sterile males competed successfully in mating to suppress reproduction between laboratory-reared normal males and females. Laboratory-reared sterile males were also released in different numbers into field cages containing the resident population and additional field-collected males and females. The results showed that the sterile males were slightly less competitive than normal ones, but they were effective in suppressing the population in the cages.

Type
Original Articles
Copyright
Copyright © Cambridge University Press 1983

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