Journal of Plant Protection Research (2009) 49, 378-381

Radoslav Andreev, Donka Rasheva and Hristina Kutinkova (2009)
Development of Aphis spiraecola patch (Hemiptera: Aphididae) on apple
Journal of Plant Protection Research 49 (4), 378-381
Abstract: Aphis spiraecola is a recently found pest on apple in Bulgaria, where it develops in the absence of secondary hosts. The aphid has displaced the native species Aphis pomi DeGeer in some regions of the country. Its development, from newborn nymph to adult female takes, in laboratory conditions, 9-10 days at 22-24°C or 6-7 days at 28-30°C. The average fecundity of one female at both temperatures is 9.5-10.5 nymphs. Under field conditions, in May and July of 2007 and 2008, the full development lasted 8.1-8.6 days of average, and the average fecundity of one female was 20.7-21.2 nymphs. About 67% of them became adults, but more than 20% of the females died without having progeny. Theoretically, the species could develop twenty and more generations per the vegetation period of apple.
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Database assignments for author(s): Hristina Kutinkova, Radoslav Andreev

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.
	Aphis pomi	Apple (Malus)	Bulgaria
	Aphis spiraecola	Apple (Malus)	Bulgaria