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- Publisher
- Taylor & Francis
- Copyright
- © 1980 Société entomologique de France
- ISSN
- 2168-6351
- eISSN
- 0037-9271
- DOI
- 10.1080/21686351.1980.12278241
- Publisher site
- See Article on Publisher Site
Abstract
Summary The migratory locust, Locusta migratoria capito, from Madagascar, was reared under constant temperature (30 °C) and illumination, or under fixed photoperiod (12 h D/12 h L) and thermoperiod (25 °G/35 °C). In such rearings, the larval development was best synchronized in periodic conditions. If the conditions remained identical throughout the locust's whole life, the results were better with periodic conditions than with aperiodic ones. Important effects were observed when the locusts were changed from one set of conditions during the larval development to different ones during adult life. The transfer which gave the best results was from constant conditions (larval development) to periodic conditions (adult life). The opposite transfer was very unfavourable. In comparison, the results were intermediate when the locusts were kept with the same conditions during their whole life. The experiments showed that the adult and larval requirements for temperature and illumination were different and that the larval life influences the adult responses to the environment. Development and reproduction can be improved by rearing the larvae with constant conditions and the adults with periodic ones.
Journal
Annales de la Société entomologique de France (N S ) – Taylor & Francis
Published: Apr 30, 1980
Keywords: Orthoptera; Acrididae; Locusta migratoria capito; Souche Madagascar; Élevage; Conditions apériodiques ou rythmées