Journal of Economic Entomology (1999) 92, 551-556

M. Savopoulou-Soultani, N. Nikolaou and P.G. Milonas (1999)
Influence of maturity stage of grape berries on the development of Lobesia botrana (Lepidoptera : Tortricidae) larvae
Journal of Economic Entomology 92 (3), 551-556
Abstract: Larvae of Lobesia botrana Denis and Schiffermueller were reared on grape berries of different stages of maturity. The berries belonged to 5 grape varieties: 'Soultanina', 'Muscat Ambourg', 'Razaki', 'Italia', and 'Xinomavro'. The berries were collected every 8-10 d from 1 wk before the stage of veraison until grape maturity. Larvae were reared individually on the grape berries of each collection day to observe their development. The larvae were allowed to develop on berries of the same variety and maturity stage until pupation. Rearing cups were examined daily to observe the condition of the berries and the larval development. The percentage of adults that emerged was counted as well. Larval development was faster on midmature or mature berries depending on the variety. In all varieties and all stages of maturity, male larvae developed faster than female. The fastest development was observed on Razaki. The percentage of adult emergence was the largest on the mature berries although there were no differences among the emergence of adults from larvae on berries of different varieties. The observed differences were associated with differences in the sugar content and acidity during the process of berry maturity, although other unmeasured factors are likely to be important.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Database assignments for author(s): Mathilde Savopoulou-Soultani, Panagiotis G. Milonas

Research topic(s) for pests/diseases/weeds:
general biology - morphology - evolution

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Lobesia botrana	Grapevine (Vitis)