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EGG LAYING IN A NORTHEASTERN NORTH AMERICAN (MONTRÉAL, QUÉBEC) POPULATION OF FORFICULA AURICULARIA L. (DERMAPTERA: FORFICULIDAE)

Published online by Cambridge University Press:  31 May 2012

Jean-Claude Tourneur  and
Jean Gingras
Jean-Claude Tourneur
Affiliation:
Département des Sciences biologiques, Université du Québec à Montnéal, Montéal, Québec, Canada H3C 3P8
Jean Gingras
Affiliation:
Département des Sciences biologiques, Université du Québec à Montnéal, Montéal, Québec, Canada H3C 3P8
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Abstract

The egg laying regime of Forficula auricularia L., defined by different parameters (number of broods, proportion of females that produce two broods, number of eggs produced at each batch, and the proportion of the total number of eggs represented by the first batch), was studied in the laboratory and under seminatural conditions for a population from Montréal. Approximately half of the females produced two batches of eggs in the laboratory; however the number of eggs produced in the first batch was substantially higher than that of the second batch. In the field a single batch of eggs was produced. Comparison of our data with the literature showed that the Montréal population appears to have a greater resemblance to one of a cold temperate climate (Font-Romeu, Eastern Pyrénées) than one of a warmer climate (Rennes, Bretagne) for all parameters studied.

Résumé

Le régime de ponte de Forficula auricularia L., défini par différents paramètres liés à la ponte (nombre de pontes, proportion de femelles produisant deux pontes, nombre d’oeufs produits à chaque ponte et proportion de la ponte totale représentée par la première ponte) a été étudié pour une population de Montréal, au laboratoire et en conditions semi-naturelles. Environ la moitié des femelles ont produit deux pontes au laboratoire; le nombre d’oeufs produit à la première ponte fut nettement plus important qu’à la seconde. Sur le terrain, une seule ponte a été produite. La comparaison avec la littérature fait ressortir que la population de Montréal ressemble davantage à celle d’un climat tempéré froid (Font-Romeu, Pyrénées orientales) qu’à celle d’un climat tempéré doux (Rennes, Bretagne) pour tous les paramètres étudiés.

Type
Articles
Information
The Canadian Entomologist , Volume 124 , Issue 6 , December 1992 , pp. 1055 - 1061
Copyright
Copyright © Entomological Society of Canada 1992

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