Translator Disclaimer
1 June 2004 Seasonal Susceptibility of ‘Bartlett’ Pears to Codling Moth (Lepidoptera: Tortricidae) Infestation and Notes on Diapause Induction
Author Affiliations +
Abstract

Seasonal susceptibility of ‘Bartlett’ pear, Pyrus communis L., to codling moth, Cydia pomonella (L.), infestation, successful completion of larval development after infestation, and the induction of C. pomonella diapause was studied from 1992 through 1995. The seasonal variation in C. pomonella infestation and larval survival were effected by changes in fruit maturity. In late May through mid-June, pears were hard and were not as successfully infested by C. pomonella and produced less larvae compared with fruit later in the season. In late June to mid-July, pears became more suitable for infestation and a greater percentage of the larvae completed their development. In late July through mid-August, pears were susceptible to infestation, but the larvae were less likely to successfully complete development than in the late June to mid-July period due to pear tissue breakdown. From mid-August through September, pears are unsuitable for infestation, and few larvae were produced. When fruit were infested with neonate larvae in late May and mature larvae emerged from the fruit in July, a low percentage of the larvae entered diapause. However, when fruit were infested with neonate larvae in early July and mature larvae emerged from the fruit in early August, the majority of the larvae entered diapause. When fruit were infested with neonate larvae in late July through September and mature larvae emerged from the fruit after mid-August, nearly all C. pomonella larvae had entered diapause.

R. A. van Steenwyk, C. F. Fouche, and T. R. Collier "Seasonal Susceptibility of ‘Bartlett’ Pears to Codling Moth (Lepidoptera: Tortricidae) Infestation and Notes on Diapause Induction," Journal of Economic Entomology 97(3), 976-980, (1 June 2004). https://doi.org/10.1603/0022-0493(2004)097[0976:SSOBPT]2.0.CO;2
Received: 20 July 2003; Accepted: 26 January 2004; Published: 1 June 2004
JOURNAL ARTICLE
5 PAGES

This article is only available to subscribers.
It is not available for individual sale.
+ SAVE TO MY LIBRARY

SHARE
ARTICLE IMPACT
RIGHTS & PERMISSIONS
Get copyright permission
Back to Top