Natural Enemies of the Fall Armyworm, Spodoptera frugiperda (J.E. Smith) (Lepidoptera: Noctuidae) in Ghana

Koffi, Djima; Kyerematen, Rosina; Eziah, Vincent Y.; Agboka, Komi; Adom, Médétissi; Goergen, Georg; Meagher, Robert L.

doi:10.1653/024.103.0414

Cited by 78 publications

(62 citation statements)

References 48 publications

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“…curvimaculatus in Kenya (Sisay et al 2018; and Ch. bifoveolatus in Ghana, Benin, Senegal and Tanzania (Agboyi et al 2020;Koffi et al 2020;Ngangambe and Mwatawala 2020;Tendeng et al 2019), in Zambia we have recorded two species. This could have some implication for interspecific competition, therefore, further studies are needed to understand the interaction and ecological niches of both species, mainly if classical biological control is considered in the future with Ch.…”

Section: Discussionmentioning

confidence: 54%

Factors influencing the occurrence of fall armyworm parasitoids in Zambia

et al. 2020

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Invasive alien species have environmental, economic and social impacts, disproportionally threatening livelihood and food security of smallholder farmers in low- and medium-income countries. Fall armyworm (FAW) (Spodoptera frugiperda), an invasive insect pest from the Americas, causes considerable losses on maize to smallholder farmers in Africa since 2016. The increased use of pesticides to control FAW in Africa raises concerns for health and environmental risks resulting in a growing interest in research on biological control options for smallholder farmers. In order to evaluate the occurrence of local natural enemies attacking FAW, we collected on a weekly basis FAW eggs and larvae during a maize crop cycle in the rainy season of 2018–2019 at four locations in the Lusaka and Central provinces in Zambia. A total of 4373 larvae and 162 egg masses were collected. For each location and date of collection, crop stage, the number of plants checked and amount of damage were recorded to analyse which factors best explain the occurrence of the natural enemy species on maize. Overall parasitism rates from local natural enemies at each location varied between 8.45% and 33.11%. We identified 12 different egg-larval, larval and larval-pupal parasitoid species. Location, maize growth stage, pest density and larval stage significantly affected parasitoid species occurrence. Our findings indicate that there is potential for increasing local populations of natural enemies of FAW through conservation biological control programmes and develop safe and practical control methods for smallholder farmers.

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Section: Discussionmentioning

confidence: 54%

Factors influencing the occurrence of fall armyworm parasitoids in Zambia

et al. 2020

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“…The biological control approach contributes to an integrated pest management (IPM) strategy with other control means. As part of an IPM strategy, surveys of natural enemies of FAW were also conducted in several African countries [14][15][16]22,23]. These studies reported a wide range of larval parasitoids and egg parasitoids [14][15][16]22,23].…”

Section: Introductionmentioning

confidence: 99%

“…As part of an IPM strategy, surveys of natural enemies of FAW were also conducted in several African countries [14][15][16]22,23]. These studies reported a wide range of larval parasitoids and egg parasitoids [14][15][16]22,23]. The egg parasitoid included Telenomus remus Nixon (Hymenoptera: Platygastridae) and several trichogrammatid species [15,16,22].…”

Section: Introductionmentioning

confidence: 99%

Parasitism of Locally Recruited Egg Parasitoids of the Fall Armyworm in Africa

Laminou

Ba²,

Karimoune³

et al. 2020

Insects

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The fall armyworm (FAW), Spodoptera frugiperda (J.E. Smith) (Lepidoptera: Noctuidae), is an insect native to the tropical and subtropical Americas that has recently spread to Africa, where it predominately attacks maize, sorghum and other plant species. Biological control is an environmentally friendly way of combatting the pest and contributes to an integrated pest management approach. In Africa, several trichogrammatid parasitoids and Telenomus remus Nixon (Hymenoptera: Platygastridae) have been found parasitizing eggs of the FAW. In Niger, the egg parasitoids encountered include Trichogrammatoidea sp. (Hymenoptera: Trichogrammatidae) and Telenomus remus Nixon. Parasitism of the FAW eggs by the two egg parasitoids was assessed in the laboratory, followed by field testing on sentinel eggs. In the laboratory, T. remus parasitized on average 78% of FAW eggs, compared to 25% for Trichogrammatoidea sp. Telenomus remus was able to parasitize egg masses that were fully covered with scales, while Trichogrammatoidea sp. parasitized only uncovered egg masses. On-farm releases of T. remus in sorghum fields caused up to 64% of FAW egg parasitism. Parasitized eggs yielded viable progeny, which can contribute to FAW egg parasitism build-up during the cropping season. Our findings lay the groundwork for the use of T. remus in augmentative releases against FAW in Africa.

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“…Different parasitoid species including Bracon sp. (Hymenoptera: Braconidae), Anatrichus erinaceus Loew (Diptera: Chloropidae), and an unidentified tachinid were also reported in Ghana [ 35 ]. This study aimed to assess the occurrence of native parasitoids of FAW, their parasitism rates, and relative abundance for potential application in biological control programs.…”

Section: Introductionmentioning

confidence: 99%

First Report of Native Parasitoids of Fall Armyworm Spodoptera frugiperda Smith (Lepidoptera: Noctuidae) in Mozambique

Caniço

Mexia

Santos

2020

Insects

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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 FAW egg 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 different parasitoid species was at 9.49%. Cultural practices favoring the action of these parasitoids should be advocated.

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Natural Enemies of the Fall Armyworm, Spodoptera frugiperda (J.E. Smith) (Lepidoptera: Noctuidae) in Ghana

Cited by 78 publications

References 48 publications

Factors influencing the occurrence of fall armyworm parasitoids in Zambia

Factors influencing the occurrence of fall armyworm parasitoids in Zambia

Parasitism of Locally Recruited Egg Parasitoids of the Fall Armyworm in Africa

First Report of Native Parasitoids of Fall Armyworm Spodoptera frugiperda Smith (Lepidoptera: Noctuidae) in Mozambique

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