Morphological description and population dynamic of Spodoptera littoralis (Boisduval, 1833) (Lepidoptera: Noctuidae)’s parasitoid on cabbage in South Côte d’Ivoire

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Morphological description and population dynamic of Spodoptera littoralis (Boisduval, 1833) (Lepidoptera: Noctuidae)’s parasitoid on cabbage in South Côte d’Ivoire

Douan Bleu Gondo Kra Kouadio Dagobert, Kwadjo Koffi Eric, Martel Veronique, Doumbia Mamadou, Dagnogo Mamadou
Int. J. Biosci.21( 2), 34-42, August 2022.
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The Egyptian cotton leafworm Spodoptera littoralis Boisduval (Lepidoptera: Noctuidae) is among the serious cabbage pests in tropical countries. It can lead an intensive chemical insecticides use in market gardening perimeters. Alternative control methods such as biological control are necessary for the integrated management of this pest. The laboratory rearing of S. littoralis larvae sampled in the cabbage fields has been undertaken and the presence of parasitoids has been noticed. The population dynamic of S. littoralis larvae and these parasitoids has been studied in two market gardening perimeters on two crop cycles. The parasitoids of S. littoralis larvae are Apanteles sp, the hymenopterans belonging to the Braconids family, and the Microgastrin subfamily. Strong populations of Apanteles sp. involve weak populations of S. littoralis and weak populations of Apanteles sp. involve strong populations of S. littoralis. However, the correlations between Apanteles sp. adult’s number and S. littoralis larvae per ten plants are not significant for the crop cycles in all the sites. These parasitoids can be nevertheless taken to account for the integrated management program of S. littoralis. Identification of this insect up to the species could be undertaken for future studies.


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