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Host testing of Eadya daenerys, a potential biological control agent for the invasive chrysomelid pest Paropsis charybdis, predicts host specificity to eucalypt-leaf feeding Paropsina

Withers, TM, Todoroski, CL, Allen, GR, Pugh, AR and Gresham, BA 2019 , 'Host testing of Eadya daenerys, a potential biological control agent for the invasive chrysomelid pest Paropsis charybdis, predicts host specificity to eucalypt-leaf feeding Paropsina' , Biocontrol , pp. 1-12 , doi: 10.1007/s10526-019-09978-6.

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Abstract

Host range testing of a larval endoparasitoid Eadya daenerys Ridenbaugh (Hymenoptera: Braconidae) was conducted. Eadya daenerys is most commonly associated with Paropsisterna agricola (Chapuis) in Australia, but is proposed as a biological control agent for Paropsis charybdis Stål (Coleoptera: Chrysomelidae) in New Zealand. Nine species of non-target beetles with spring-active, external leaf-feeding larvae, were host tested. Development to emergence only occurred within eucalypt-feeding Paropsina pests: the target P. charybdis and another pest Trachymela sloanei (Blackburn). Unsuccessful internal parasitism occurred in four less closely related non-target Chrysomelinae. Considering the different feeding niches occupied by these beetles, we hypothesize that Eadya daenerys is unlikely to cause direct non-target impacts beyond pest Paropsina species in the New Zealand environment.

Item Type: Article
Authors/Creators:Withers, TM and Todoroski, CL and Allen, GR and Pugh, AR and Gresham, BA
Keywords: parasitoid, eucalyptus, entomology, risk assessment, endemic beetle, weed biological control agents, Eucalyptus pest
Journal or Publication Title: Biocontrol
Publisher: Kluwer Academic Publ
ISSN: 1386-6141
DOI / ID Number: 10.1007/s10526-019-09978-6
Copyright Information:

Copyright 2019 International Organization for Biological Control (IOBC)

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