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- Publisher
- Taylor & Francis
- Copyright
- © 1982 Société entomologique de France
- ISSN
- 2168-6351
- eISSN
- 0037-9271
- DOI
- 10.1080/21686351.1982.12278325
- Publisher site
- See Article on Publisher Site
Abstract
Summary The studies were undertaken in order to compare the morphometrical phase responses of six different geographical strains of Locusta migratoria L. Both the size and the sexual size dimorphism varie in relation to the origin and temperature breeding conditions. So, the size varies from 95,9 ± 3,0 to 78,6 ± 1,3 mm in isolated; and from 91,8 ± 4,5 to 73,8 ± 2,0 mm in crowded females. The breeding temperatures were: 22-32 °C, 25-35 °C and 25-40 °C (night-day, 12/12 h.). In a similar manner, the actions of the temperatures are different in relation to the strain, and the temperature 22-32 °C may even inhibit the phase polymorphism in two strains. Althought the strains were maintened in the laboratory during many generations, their diversity and the described temperatures led us to confirm the generality of the phase phenomenon but, in the same time, to demonstrate its malleability since it may be inhibited under certain external conditions.
Journal
Annales de la Société entomologique de France (N S ) – Taylor & Francis
Published: Jul 31, 1982
Keywords: Orthoptera; Acrididae; Locusta migratoria; Morphométrie; Phases; Températures.