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First report of native parasitoids of fall armyworm Spodoptera frugiperda Smith (Lepidoptera: Noctuidae) in Mozambique
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Orientador(es)
Resumo(s)
The alien invasive insect pest Spodoptera frugiperda Smith (Lepidoptera: Noctuidae),
commonly referred to as fall armyworm (FAW), is causing significant losses to maize production
in Africa since its detection in 2016. As an emergency response, governments in several countries
distributed and/or promoted massive use of synthetic insecticides among smallholder farmers to fight
FAW. The inappropriate use of synthetic insecticides by non-trained and ill-equipped farmers raises
environmental and health concerns. This study aimed to assess the occurrence of native parasitoids of
FAW, their parasitism rates, and relative abundance in the central province of Manica, Mozambique.
A field collection of FAWegg masses and larvae was conducted from May to August 2019 (dry season
of the 2018/2019 cropping season) and in December 2019 and January 2020 (rainy season of 2019/2020
cropping season). A total of 101 egg masses and 1444 larvae of FAW were collected from infested
fields. Five larval parasitoids were recorded, but no egg parasitism was observed. Coccygidium
luteum Brullé (Hymenoptera: Braconidae) and Drino quadrizonula Thomson (Diptera: Tachinidae)
were the primary parasitoids. Maximum parasitism of 23.68% and 8.86% and relative abundance
of 100 and 96.3 were recorded for C. luteum and D. quadrizonula, respectively. Total parasitism by
di erent parasitoid species was at 9.49%. Cultural practices favoring the action of these parasitoids
should be advocated
Descrição
Palavras-chave
fall armyworm invasive species parasitoids biological control Mozambique
Contexto Educativo
Citação
Insects 2020, 11, 615
Editora
MDPI