Journal of Plant Diseases and Protection (2019) 126, 93-95

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Pascal Osa Aigbedion-Atalor, Itohan Idemudia, Arne B.R. Witt and Michael D. Day (2019)
First record of the impact of the parasitism of Cecidochares connexa (Diptera: Tephritidae) by a solitary larval ectoparasitoid in West Africa: Cause for concern?
Journal of Plant Diseases and Protection 126 (1), 93-95
Abstract: Cecidochares connexa is currently the only effective biological control agent of Chromolaena odorata an invasive weed in West Africa. Recently, an ectoparasitoid species belonging to the Ormyrus genus was found parasitizing C. connexa in three regions of Ghana. Adult parasitoid emergence percentages varied between 16 and 21%. This raises concerns about its impact on C. connexa populations and the overall biocontrol of C. odorata. New field surveys to determine the distribution range of Ormyrus sp. and its impact on C. connexa should be quickly addressed in West Africa.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Link to article at publishers website
Database assignments for author(s): Michael D. Day

Research topic(s) for pests/diseases/weeds:
biocontrol - natural enemies
Research topic(s) for beneficials or antagonists:
surveys/distribution/isolation


Pest and/or beneficial records:

Beneficial Pest/Disease/Weed Crop/Product Country Quarant.


Chromolaena odorata (weed) Ghana
Cecidochares connexa (weed bioagent) Chromolaena odorata (weed) Ghana