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13 March 2017 Influence of Different Hazelnut Cultivars on Some Demographic Characteristics of the Filbert Aphid (Hemiptera: Aphididae)
Ali Güncan, Ebru Gümüş
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Abstract

The filbert aphid Myzocallis coryli (Goeze) is a serious pest of hazelnut in North America, Italy, Spain, and Turkey. To evaluate the resistance of hazelnut to this insect, aphids were reared on five major cultivars (‘Tombul,' ‘Palaz,' ‘Çakıldak,' ‘Foşa,’ and ‘Mincane') under laboratory conditions. The developmental times of preadult and adult stages, total longevity, reproduction, and life table parameters were analyzed according to age–stage, two-sex life table theory, in which the stage differentiation and variable developmental rates among individuals could be described. The intrinsic rate of increase (r) and finite rate of increase (λ) varied among the cultivars. The highest values were found for aphids reared on Çakıldak (r = 0.2019 d–1, λ = 1.2238 d–1), which did not differ significantly from Mincane (r = 0.1957 d–1, λ = 1.2161 d–1), whereas these parameters were lowest for Palaz (r = 0.1622 d–1, λ = 1.1761 d–1) and Foşa (r = 0.1677 d–1, λ = 1.1826 d–1). Based on longer preadult development time, shorter adult longevity, shorter reproductive period, together with the demographic parameters, Palaz and Foşa provide a relatively unfavorable environment for the filbert aphid. The results obtained from demographic data together with estimates of pest growth potential generated by computer projection based on age–stage, two-sex life table theory, demonstrate that both Palaz and Foşa are resistant cultivars for M. coryli and can be considered in hazelnut integrated pest management and hazelnut breeding programs.

© The Authors 2017. Published by Oxford University Press on behalf of Entomological Society of America. All rights reserved. For Permissions, please email: journals.permissions@oup.com
Ali Güncan and Ebru Gümüş "Influence of Different Hazelnut Cultivars on Some Demographic Characteristics of the Filbert Aphid (Hemiptera: Aphididae)," Journal of Economic Entomology 110(4), 1856-1862, (13 March 2017). https://doi.org/10.1093/jee/tox087
Received: 22 December 2016; Accepted: 18 February 2017; Published: 13 March 2017
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