Abstract

This study aimed to reveal the interactions of aphids with their primary hosts (pome and stone fruit trees) and secondary hosts (herbaceous plants) in and around orchards in the Çanakkale Province in northwestern Turkey between April-September from 2020 to 2021. Thirty-eight aphid species belonging to 18 genera from two subfamilies, Aphidinae and Calaphidinae, of Aphididae in the order Hemiptera were identified on 53 host plants. Also, 92 aphid-primary-secondary host plant interactions, including several new host plant records for some aphid species in Turkey were revealed in the orchards. Of these hosts, Ballota sp. (Lamiaceae), Carduus pycnocephalus L. (Asteraceae), Conyza sp. (Asteraceae), Diplotaxis sp. (Brassicaceae), Echium plantagineum L. (Boraginaceae), Galium sp. (Rubiaceae), Geranium columbinum L. (Geraniaceae), Papaver rhoeas L. (Papaveraceae), Ranunculus muricatus L. (Ranunculaceae) and Scandix pecten-veneris L. (Apiaceae) are determined as new host plants for some aphids in Turkey. It is believed that the new data on the interactions of aphids with their primary and secondary hosts in orchards will support both a better understanding of the biology of fruit pest aphids and the development of new strategies for the control of aphid pests.

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