Title

Feeding and development of Cydia pomonella (Lepidoptera: Tortricidae) larvae on apple leaves

Abstract

We present leaf consumption, maximum body weight, head capsule width, and testicular ultrastructure of four sequential instars in codling moth reared solely on apple leaves of Honeycrisp variety. The developmental parameters for Cydia pomonella (L.) larvae fed on leaves are compared with those reared on artificial diet. Head capsules in the second, third, and fourth instars reared on leaves were significantly smaller than those in larvae fed artificial diet. Maximum body weights were significantly lower in all instars fed leaves compared with larvae fed artificial diet. More than 60% of larvae fed leaves molted to the third instar, and ≈ 3% entered the fifth instar, but none pupated, demonstrating an inability to fully compensate for the reduced nutritive value of a leaf-based diet. A study of testicular ultrastructure revealed that feeding codling moth larvae exclusively on apple leaves allowed formation of testes, but also triggered an intense, abnormal autophagocytosis that caused premature senescence of this tissue.

Document Type

Article

DOI

https://doi.org/10.1603/0013-8746(2002)095[0603:FADOCP]2.0.CO;2

Keywords

Cydia pomonella, Development, Feeding, Head capsule width, Maximum body weight, Testes

Publication Date

1-1-2002

Journal Title

Annals of the Entomological Society of America

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