With or without you: stem-galling of a tephritid fly reduces the vegetative and reproductive performance of the invasive plant Chromolaena odorata (Asteraceae) both alone and in combination with another agent

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dc.contributor.authorigbedion-Atalor, P.O.
dc.contributor.authorDay, M.D.
dc.contributor.authorIdemudia, I.
dc.contributor.authorWilson, D.D.
dc.contributor.authorPaterson, I.D.
dc.date.accessioned2019-06-03T09:52:41Z
dc.date.available2019-06-03T09:52:41Z
dc.date.issued2019-02
dc.description.abstractWith or without another biological control agent, the specialist folivore Pareuchaetes pseudoinsulata, the stem-galling fly Cecidochares connexa reduced the performance of the invasive alien plant, Chromolaena odorata in Ghana. There was a strong significant negative relationship between gall densities of the gall fly and stem height, and the number of stems and flower heads of C. odorata. Pareuchaetes pseudoinsulata had very little impact on any C. odorata parameters. However, at sites where both C. connexa and P. pseudoinsulata occurred simultaneously, the performance of C. odorata was significantly reduced when compared with control plants. Increasing densities of both agents had a strong significant negative correlative effect on C. odorata plant parameters. Cecidochares connexa was recorded in all five regions of the country sampled, while P. pseudoinsulata was recorded in four regions. Densities of both agents declined in the dry season, but galls were persistent throughout the study period. This is the first report of the impact of C. connexa on C. odorata in the West African sub-region since its introduction to Cote d’Ivoire in 2003 and it is clear that the agent has a significant impact on C. odorata in Ghana. Further surveys are required to determine the impact of both biological control agents in other parts of the sub-region where they have established. © 2018, International Organization for Biological Control (IOBC).en_US
dc.identifier.citationAigbedion-Atalor, P.O., Day, M.D., Idemudia, I. et al. BioControl (2019) 64: 103. https://doi.org/10.1007/s10526-018-09917-xen_US
dc.identifier.otherVolume 64, Issue 1, pp 103–114
dc.identifier.otherhttps://doi.org/10.1007/s10526-018-09917-x
dc.identifier.urihttp://ugspace.ug.edu.gh/handle/123456789/30464
dc.language.isoenen_US
dc.publisherBioControlen_US
dc.subjectBiological control agent interactionsen_US
dc.subjectCecidochares connexaen_US
dc.subjectPareuchaetes pseudoinsulataen_US
dc.subjectPost-release evaluationen_US
dc.subjectWest Africaen_US
dc.titleWith or without you: stem-galling of a tephritid fly reduces the vegetative and reproductive performance of the invasive plant Chromolaena odorata (Asteraceae) both alone and in combination with another agenten_US
dc.typeArticleen_US

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