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THE LIFE HISTORY OF THE CARROT WEEVIL, LISTRONOTUS OREGONENSIS (COLEOPTERA: CURCULIONIDAE) UNDER CONTROLLED CONDITIONS1

Published online by Cambridge University Press:  31 May 2012

P. Martel ,
H. J. Svec  and
C. R. Harris
P. Martel
Affiliation:
Research Station, Agriculture Canada, St. Jean, Quebec
H. J. Svec
Affiliation:
Research Institute, Agriculture Canada, London, Ontario
C. R. Harris
Affiliation:
Research Institute, Agriculture Canada, London, Ontario
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Abstract

Laboratory studies on the biology of the carrot weevil, Listronotus oregonensis (LeConte), were performed at 21° and 27 °C. At 21 °C females laid eggs for 88 days on carrot slices and 94 days on foliage. Egg production per female averaged 156 and 175 on slices and leaves respectively. Eggs hatched after 8.3 days incubation and the larval stage comprising four instars was completed in 19.1 days. The prepupal and pupal stages lasted 3.7 and 9.4 days respectively. The complete life cycle including an average preoviposition period of 17 days was 57.6 days. Development was more rapid at 27 °C, with the complete life cycle taking only 37 days.

Résumé

La biologie du charançon de la carotte, Listronotus oregonensis (LeConte), au laboratoire, a été étudiée à deux températures, 21° et 27 °C. A 21 °C la durée de ponte été de 88 jours sur racine et de 94 jours sur feuillage. La production moyenne d’oeufs a été de 156 chez les femelles maintenues sur racine et de 175 sur feuillage. La période d’incubation des oeufs a demandé 8.3 jours. Le développement larvaire, qui comprend 4 stades, était complété après 19.1 jours. Le stade prépupe a nécessité 3.7 jours et le stade de pupe a duré 9.4 jours. Avec une période de préoviposition moyenne de 17 jours, le cycle complet de l’insecte a été de 57.6 jours. Le développement a été plus rapide à 27 °C, le cycle ne demandant que 37 jours pour se compléter.

Type
Articles
Information
The Canadian Entomologist , Volume 108 , Issue 9 , September 1976 , pp. 931 - 934
Copyright
Copyright © Entomological Society of Canada 1976

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References

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