Assessing lethal doses of the baculovirus MaviMNPV and the effect of its combination with neem oil on the survival of Maruca vitrata (Fabricius) (Lepidoptera: Crambidae) larval stages in laboratory

Assessing lethal doses of the baculovirus MaviMNPV and the effect of its combination with neem oil on the survival of Maruca vitrata (Fabricius) (Lepidoptera: Crambidae) larval stages in laboratory

Cowpea production is limited by predation from several insect pests, including Maruca vitrata (F.) (Lepidoptera: Crambidae) as one of the most destructive. The present study aimed to assess the pesticidal effect of neem oil and the baculovirus Mavi MNPV (separately and in combination) on M. vitrata...

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Bibliographic Details
Published in:International journal of tropical insect science Vol. 42; no. 3; pp. 2143 - 2149
Main Authors: Kindozandji, A., Dannon, A. E., Nondichao, A. N., Amevoin, K., Glitho, I. A., Srinivasan, R., Pittendrigh, B. R., Tamò, M.
Format: Journal Article
Language:English
Published: Cham Springer International Publishing 2022
Springer Nature B.V
Subjects:
Baculovirus
Biomedical and Life Sciences
Cowpeas
Crambidae
Entomology
Insects
Laboratories
Lepidoptera
Life Sciences
Maruca vitrata
Mortality
Neem
Neem oil
Original Research Article
Pesticides
Pests
Predation
Vegetable oils
Cowpea
MNPV
Neem oil
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Summary:Cowpea production is limited by predation from several insect pests, including Maruca vitrata (F.) (Lepidoptera: Crambidae) as one of the most destructive. The present study aimed to assess the pesticidal effect of neem oil and the baculovirus Mavi MNPV (separately and in combination) on M. vitrata under laboratory conditions . Eight treatments in a 4-replicate randomized block design (including control) were assessed at each of the five M. vitrata larval stages. Neem oil induced larval mortality ranging from 41.50 ± 2.50% to 97.08 ± 2.00%, with the lower values in L4 and L5, while Mavi MNPV induced larval mortality varying from 15 ± 0.63% to 100 ± 00% (depending on larval stages). Used in combination, induced larval mortality was higher still (from 28.33 ± 4.40% to 100 ± 00%), suggesting a synergistic or additive action. Cox regression also indicated that Mavi MNPV larval mortality was dose-dependent when applied at large stages L1, L2, and L3.
ISSN:1742-7592
1742-7584
1742-7592
DOI:10.1007/s42690-022-00734-5