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Caractéristiques Écologiques de la Diapause du Phytonome de la Luzerne Hypera Variabilis [Col. Curculionidae]

Caractéristiques Écologiques de la Diapause du Phytonome de la Luzerne Hypera Variabilis [Col.... SUMMARY The alfalfa weevil in its adult stage presents a summer diapause, the periode of which is mainly controlled by the surrounding climatic conditions and especially by the photoperiod which seems to be the fondamental stimulus. The diapause is the shorter as the luminous phase is reduced and as the temperature of culture reaches an optimum of 20 °C (either more or less than 20 °C). We could realize, too, for this Insect, the importance of the dark phase in the determination of the diapause. These factors influence the initiation of the diapause as well as its elimination and all stages are practically sensible to them, the result being more important as the insect has been a longer time under these conditions. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Annales de la Société entomologique de France (N S ) Taylor & Francis

Caractéristiques Écologiques de la Diapause du Phytonome de la Luzerne Hypera Variabilis [Col. Curculionidae]

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Publisher
Taylor & Francis
Copyright
© 1968 Société entomologique de France
ISSN
2168-6351
eISSN
0037-9271
DOI
10.1080/21686351.1968.12277977
Publisher site
See Article on Publisher Site

Abstract

SUMMARY The alfalfa weevil in its adult stage presents a summer diapause, the periode of which is mainly controlled by the surrounding climatic conditions and especially by the photoperiod which seems to be the fondamental stimulus. The diapause is the shorter as the luminous phase is reduced and as the temperature of culture reaches an optimum of 20 °C (either more or less than 20 °C). We could realize, too, for this Insect, the importance of the dark phase in the determination of the diapause. These factors influence the initiation of the diapause as well as its elimination and all stages are practically sensible to them, the result being more important as the insect has been a longer time under these conditions.

Journal

Annales de la Société entomologique de France (N S ) – Taylor & Francis

Published: Apr 30, 1968

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