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- Publisher
- Taylor & Francis
- Copyright
- © 1969 Société entomologique de France
- ISSN
- 2168-6351
- eISSN
- 0037-9271
- DOI
- 10.1080/21686351.1969.12277781
- Publisher site
- See Article on Publisher Site
Abstract
SUMMARY Caterpillars of H. armigera generally have 5 to 6 stages, more rarely 7 to 8 and exceptionally 9 (types 5, 6.‥ 9). A comparative study of the two most common types of development has been carried out at different temperatures; nutrition, photoperiod, strain, number of previous generations in the laboratory, have also considered and interactions of these factors are defined. The appearance of types 7 to 9 indicates a decrease of vigour. A degeneration also appears in strains which have been strickly inbreeded. The value of the type of development as a criterium for the vigour of the strain has thus been established.
Journal
Annales de la Société entomologique de France (N S ) – Taylor & Francis
Published: Apr 30, 1969