Comparative Biology of Mallada Desjardinsi (Navas) and Chrysoperla Congrua (Walker) (Neuroptera: Chrysopidae), Predators of Helicoverpa Armigera (Hubner) (Lepidoptera: Noctuidae) and Aphis Gossypii (Glover) (Homoptera: Aphididae) On Cotton in Eastern Tanzania

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dc.creatorKabissa, Joe C.B.
dc.creatorKayumbo, H. Y.
dc.creatorYarro, Jacob G.
dc.date2016-07-19T13:04:42Z
dc.date2016-07-19T13:04:42Z
dc.date1995
dc.date.accessioned2021-05-03T13:29:44Z
dc.date.available2021-05-03T13:29:44Z
dc.descriptionFull text can be accessed at http://www.tandfonline.com/doi/abs/10.1080/09670879509371952
dc.descriptionThe developmental biology of Mallada desjardinsi (Navas) and Chrysoperla congrua (Walker) on the American bollworm, Helicoverpa armigera and the cotton aphid, Aphis gossypii was studied in the laboratory at 28–32°C. Total larva! periods of M. desjardinsi and C. congrua on H. armigera eggs were 14.4 and 14.8 days respectively. However, when reared on A. gossypii larval periods of M. desjardinsi and C. congrua were 14.9 and 13.5 days respectively. When reared on H. armigera 52.9% and 25% respectively of third instars of M. desjardinsis and C. congrua sp. died before pupation. However, when reared on A. gossypii 82.6% and 46.9% respectively of third instars of M. desjardinsi and C. congrua died before pupation. Thus, H. armigera eggs and A. gossypii nymphs were both adequate but not optimal diets for chrysopid larval development. The number of prey consumed by M. desjardinsi and C. congrua increased with instar. Total larval consumption of H. armigera by M. desjardinsi and C. congrua was determined to be 135.5 and 169.8 eggs respectively. However, total larval consumption of A. gossypii by M. desjardinsi and C. congrua was found to be 189.0 and 171.8 nymphs respectively. Because of its longer larval period, and higher consumption of A. gossypii, M. desjardinsi would be better suited for use against A. gossypii than C. congrua. In contrast, C. congrua whose consumption of H. armigera was higher than that of M. desjardinsi although their larval periods were similar, would appear promising for control of H. armigera.
dc.identifierKabissa, J.C.B., Kayumbo, H.Y. and Yarro, J.G., 1995. Comparative biology of Mallada desjardinsi (navas) and Chrysoperla congrua (walker)(Neuroptera: Chrysopidae), predators of Helicoverpa armigera (Hubner)(Lepidoptera: Noctuidae) and aphis gossypii (glover)(Homoptera: Aphididae) on cotton in eastern Tanzania. International Journal of Pest Management, 41(4), pp.214-218.
dc.identifierhttp://hdl.handle.net/20.500.11810/3306
dc.identifier10.1080/09670879509371952
dc.identifier.urihttp://hdl.handle.net/20.500.11810/3306
dc.languageen
dc.publisherTaylor and Francis
dc.subjectChrysopids
dc.subjectDevelopment
dc.subjectH. armigera
dc.subjectA. gossypii
dc.subjectCotton
dc.titleComparative Biology of Mallada Desjardinsi (Navas) and Chrysoperla Congrua (Walker) (Neuroptera: Chrysopidae), Predators of Helicoverpa Armigera (Hubner) (Lepidoptera: Noctuidae) and Aphis Gossypii (Glover) (Homoptera: Aphididae) On Cotton in Eastern Tanzania
dc.typeJournal Article, Peer Reviewed

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