Open AccessTHE DURATION AND NUMBER OF THE IMMATURE STAGES OF CODLING MOTH CYDIA POMONELLA (L.) (TORTRICIDAE: LEPIDOPTERA)
Author(s) -
Williams D. G.,
McDonald G.
Publication year - 1982
Publication title -
australian journal of entomology
Language(s) - English
Resource type - Journals
eISSN - 1440-6055
pISSN - 1326-6756
DOI - 10.1111/j.1440-6055.1982.tb01755.x
Subject(s) - tortricidae , codling moth , biology , lepidoptera genitalia , instar , horticulture , botany , larva
The developmental rates of the immature stages of Cydia pomonella were determined at 20, 25, 30 and 35 °C, and the various instars were distinguished using head capsule measurements. There were 5 distinct instars at 20, 25 and 30 °C and possibly more at 35 °C. Rate of development increased with temperature up to 30 ° but declined at 35 °C. There was considerable variation in the developmental period due to the effects of temperature, apple variety and intrinsic differences.