Issue |
Annls Limnol.
Volume 14, Number 3, 1978
|
|
---|---|---|
Page(s) | 215 - 224 | |
DOI | https://doi.org/10.1051/limn/1978009 | |
Published online | 15 June 2011 |
Comparaison entre la diapause larvaire chez Anabolia nervosa Curtis et Halesus radiatus Curtis [Trichoptera, Limnephilidae]
A comparison between the larval diapause in Anabolia nervosa Curtis and Halesus radiatus Curtis (Trichoptera - Limnephilidae)
Laboratoire de Biologie Animale 1 er Cycle, U.E.R. Sciences Biologiques, avenue du Général-Leclerc, 35031 Rennes Cedex
Par l'étude de la chronologie des comportements et de l'évolution organique à la fin de la vie larvaire des deux espèces ainsi que par l'étude de l'action d'une photopériode de 18 heures sur les larves âgées de H. radiatus, il est établi que chez A. nervosa, la diapause se situe à la fin de la croissance larvaire, avant la métamorphose et stoppe le développement. Chez H. radiatus, elle intervient soit à la fin de la croissance larvaire, soit encore au début de la métamorphose, et le plus souvent elle ne fait que ralentir le développement.
Abstract
By studying the chronology of the behaviour and the organic evolution of both speoies, at the end of their larval life and also the aotion of an 18 h long photoperiod on old larvae of H. radiatus, we have established that with A. nervosa, the diapause is situated at the end of the larval growth periode, before metamorphosis and the cessation of the development. With H. radiatus, it intervenes either at the end of the larval growth or else at the beginning of metamorphosis and it often merely reduces the rate of the development.
© Masson, 1978
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