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Oviposition selection of Drosophila suzukii (Diptera:Drosophilidae) on four cherry varieties and its relationship to the physiological characteristics of cherry fruits
Author(s): 
Pages: 328-334
Year: Issue:  3
Journal: Acta Entomologica Sinica

Keyword:  Drosophila suzukiicherryoviposition selectionphysiological characteristicsnutrient contentfruit rigidity;
Abstract: 【Aim】This study aims to understand the oviposition selection of Drosophila suzukii on cherries( Cerasus pseudocerasus) and the relationship of oviposition selection to physiological characteristics of cherry fruits. 【Methods】The oviposition selection of D. suzukii on four cherry varieties( Huangmi,Hongdeng,Van and Summit) was tested by inducing oviposition of D. suzukii using intact cherry and sliced cherry,respectively. The physiological characteristics of cherry fruits,including the fruit rigidity and the contents of proteins,amino acids,glycogen and pectin,were tested. The correlation between the oviposition selection of D. suzukii and the physiological characteristics of cherry fruits were analyzed.【Results】The cherry varieties with higher glycogen content and lower pectin content( Huangmi and Hongdeng) were the most readily chosen hosts for oviposition of D. suzukii. The oviposition selection of D. suzukii on the intact cherry was related to fruit rigidity. The fecundity was higher in the varieties with lower fruit rigidity( Van and Summit). However,there was no significant correlation between theoviposition selection of D. suzukii and the contents of proteins and amino acids in cherry fruits.【Conclusion】The selectivity of oviposition of D. suzukii on the four cherry varieties is significantly different,which is related to the nutrient contents and rigidity of cherry fruits.
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