Laboratory bioassays on the susceptibility of trimen’s false tiger moth, agoma trimenii (lepidoptera : agaristidae), to entomopathogenic nematodes and fungi

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dc.contributor.authorMorris, C. A.en_ZA
dc.contributor.authorMalan, A. P.en_ZA
dc.contributor.authorDe Waal, J. Y.en_ZA
dc.contributor.authorJohnson, S.en_ZA
dc.date.accessioned2020-11-05T09:29:11Z
dc.date.available2020-11-05T09:29:11Z
dc.date.issued2020
dc.descriptionCITATION: Morris, C., et al. 2020. Laboratory bioassays on the susceptibility of trimen’s false tiger moth, agoma trimenii (lepidoptera : agaristidae), to entomopathogenic nematodes and fungi. South African Journal of Enology and Viticulture, 41(2):183-188, doi:10.21548/41-2-4038.
dc.descriptionThe original publication is available at http://www.journals.ac.za/index.php/sajev
dc.description.abstractTrimen’s false tiger moth, Agoma trimenii (Lepidoptera: Agaristidae), recently developed as a pest of grapevine in the Northern Cape and Limpopo (Groblersdal area) provinces of South Africa. Little is known about the biology of A. trimenii and control options are lacking. The aim of this study was to test the susceptibility of A. trimenii larvae and pupae to two locally isolated entomopathogenic nematodes (EPNs), Steinernema yirgalemense and Heterorhabditis noenieputensis, and two commercially available entomopathogenic fungi (EPF), Metarhizium anisopliae and Beauveria bassiana, under laboratory conditions. Larvae and pupae were screened for pathogenicity of the two nematode species, using a concentration of 100 infective juveniles (IJs)/50 μl of water. After 48 h, 100% mortality of the larval stage was found. However, no pupae were infected with EPNs. Larvae and pupae were screened for pathogenicity of the two EPF isolates by means of a dipping test, at a concentration of 0.2 ml/500 ml water and 0.5 g/500 ml water, respectively. Five days post-treatment, 100% larval mortality was recorded in comparison with no deaths in the controls. Overt mycosis was only observed in the case of M. anisopliae. However, in the case of pupae, no mortality was observed for both the nematode and the fungal applications. In future studies, the prepupal soil stage of A. trimenii should be screened for susceptibility to EPNs and EPF. The results of this study indicate the excellent potential of EPNs and EPF as biological control agents against the larvae of A. trimenii, especially for application to small areas with high infestation, without disrupting an integrated pest management programme.en_ZA
dc.description.urihttps://www.journals.ac.za/index.php/sajev/article/view/4038
dc.description.versionPublisher's version
dc.format.extent6 pages
dc.identifier.citationMorris, C., et al. 2020. Laboratory bioassays on the susceptibility of trimen’s false tiger moth, agoma trimenii (lepidoptera : agaristidae), to entomopathogenic nematodes and fungi. South African Journal of Enology and Viticulture, 41(2):183-188, doi:10.21548/41-2-4038
dc.identifier.issn2224-7904 (online)
dc.identifier.issn0253-939X (print)
dc.identifier.otherdoi:10.21548/41-2-4038
dc.identifier.urihttp://hdl.handle.net/10019.1/108915
dc.language.isoen_ZAen_ZA
dc.publisherSouth African Society for Enology and Viticulture
dc.rights.holderSouth African Society for Enology and Viticulture
dc.subjectTrimen's False Tiger Mothen_ZA
dc.subjectIntegrated pest managementen_ZA
dc.subjectTrimen's False Tiger Moth -- Integrated controlen_ZA
dc.subject(IPM) Integrated pest managementen_ZA
dc.subjectVineyards -- South Africa -- Northern Cape -- Diseases and pestsen_ZA
dc.subjectVineyards -- South Africa -- Limpopo -- Diseases and pestsen_ZA
dc.subjectVineyards -- South Africa -- Groblersdal -- Diseases and pestsen_ZA
dc.subjectEntomopathogenic fungien_ZA
dc.subjectInsect pathogenic fungien_ZA
dc.subjectInsect nematodesen_ZA
dc.subjectEntomogenous nematodesen_ZA
dc.subjectEntomaphagous nematodesen_ZA
dc.subjectEntomophillic nematodesen_ZA
dc.subjectInsect-parasitic nematodesen_ZA
dc.titleLaboratory bioassays on the susceptibility of trimen’s false tiger moth, agoma trimenii (lepidoptera : agaristidae), to entomopathogenic nematodes and fungien_ZA
dc.typeArticleen_ZA
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