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Laboratory comparison of two Aphelinus mali clades for control of woolly apple aphid from Hebei Province, China

Published online by Cambridge University Press:  29 September 2017

M. Su ,
X. Tan ,
Q. Yang ,
C. Zhao ,
F. Wan  and
H. Zhou
M. Su
Affiliation:
College of Agronomy and Plant Protection, Key Lab of Integrated Crop Pest Management of Shandong Province, Qingdao Agricultural University, Qingdao 266109, China
X. Tan
Affiliation:
College of Agronomy and Plant Protection, Key Lab of Integrated Crop Pest Management of Shandong Province, Qingdao Agricultural University, Qingdao 266109, China
Q. Yang
Affiliation:
General Station of Plant Protection of Shandong Province, Jinan 250100, China
C. Zhao
Affiliation:
College of Life Science, Hebei Normal University of Science and Technology, Qinhuangdao 066004, China
F. Wan
Affiliation:
College of Agronomy and Plant Protection, Key Lab of Integrated Crop Pest Management of Shandong Province, Qingdao Agricultural University, Qingdao 266109, China State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100081, China
H. Zhou*
Affiliation:
College of Agronomy and Plant Protection, Key Lab of Integrated Crop Pest Management of Shandong Province, Qingdao Agricultural University, Qingdao 266109, China
*
*Author for correspondence: Tel/Fax: +86-0532-86080462 E-mail: [email protected]
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Abstract

Aphelinus mali (Haldeman) is an effective natural enemy of woolly apple aphid (WAA), Eriosoma lanigerum (Hausmann). Previous studies have found that, with WAA from Shandong Province (Qingdao) as the host, there are significant differences in various biological characteristics between a Shandong clade and Liaoning clade of A. mali. The ability of the Shandong clade to control this aphid was significantly higher than that of the Liaoning clade in Shandong Province. In order to determine whether differences were caused by better adaptation of the Shandong parasitoid clade to the population of the host in that province or if it represents a more general fitness of this clade to control the host regardless of location, we compared the same parasitoid clades with hosts from Hebei Province. We found no significant differences in the developmental threshold temperature, effective accumulated temperature, fecundity, longevity, and oviposition period of the two clades, but the duration of host searching of the Shandong clade was significantly longer than that of the Liaoning clade. The instantaneous attack rate, the control ability (a/Th), the search parameter (Q) of the Shandong clade (0.0946, 0.543, 0.0725) of A. mali were higher than that of the Liaoning clade (0.0713, 0.382, 0.0381), and therefore, with WAA from Hebei Province as the host, the host adaptability of the Shandong clade of A. mali was not worse than that of the Liaoning clade, while the pest control ability of the Shandong clade was still greater than that of the Liaoning clade.

Keywords

Aphelinus maligenetic cladehost adaptabilityecological differencespest control ability
Type
Research Papers
Information
Bulletin of Entomological Research , Volume 108 , Issue 3 , June 2018 , pp. 400 - 405
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Copyright
Copyright © Cambridge University Press 2017 

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