Journal of Economic Entomology (2004) 97, 59-66

Dionyssios P. Lykouressis, Dionyssios CH. Perdikis and Antonios G. Drillias (2004)
Temporal dynamics of Otiorhynchus schlaeflini (Coleoptera: Curculionidae) adults and damage assessment on two wine grape cultivars
Journal of Economic Entomology 97 (1), 59-66
Abstract: The nocturnal temporal dynamics of adults of Otiorhynchus schlaeflini Stierlin on wine grape Vitis vinifera L. 'Rhoditis' and 'Mavroudi' were studied in the western Peloponnese during spring 1993 and 1994. The maximum number of adults was recorded ~3 h after sunset. Emergence began on 13 March 1993 and 19 March 1994; the population peaked on 24 and 16 April in each year, respectively. Low numbers of adults were found during daytime observations in May. The length and the number of knobs, and the number of grapes on twigs from damaged buds were significantly reduced only in 'Rhoditis'. However, the weight of grapes produced on twigs developed from damaged buds was significantly less than those from undamaged buds in both cultivars. We found that the severity of damage caused to buds is dependent on the wine grape cultivar. Therefore, the effect of wine grape cultivar should be taken into account when estimating the economic threshold.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Link to article at publishers website
Database assignments for author(s): Dionyssios Ch. Perdikis

Research topic(s) for pests/diseases/weeds:
damage/losses/economics
resistance/tolerance/defence of host

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Otiorhynchus schlaeflini	Grapevine (Vitis)