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Occurrence of natural enemies of fall armyworm, Spodoptera frugiperda (Lepidoptera: Noctuidae) in Nigeria

Fall armyworm (FAW; Spodoptera frugiperda), an exotic moth which recently invaded Africa, is a highly destructive pest of cereals especially maize a highly valued staple crop in Nigeria. The use of natural enemies such as predators or parasitoids for FAW control is more economically viable and envir...

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Autores principales: Ogunfunmilayo, Akindele Oluwole, Kazeem, Shakiru Adewale, Idoko, Joy Ejemen, Adebayo, Raphael Abiodun, Fayemi, Elizabeth Yetunde, Adedibu, Okuyinka Bosola, Oloyede-Kamiyo, Qudrah Olaitan, Nwogwugwu, Joy Oluchi, Akinbode, Oluwafolake Adenike, Salihu, Shina, Offord, Lisa Clare, Buddie, Alan Graham, Ofuya, Thomas Inomisan
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Public Library of Science 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8274871/
https://www.ncbi.nlm.nih.gov/pubmed/34252127
http://dx.doi.org/10.1371/journal.pone.0254328
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author Ogunfunmilayo, Akindele Oluwole
Kazeem, Shakiru Adewale
Idoko, Joy Ejemen
Adebayo, Raphael Abiodun
Fayemi, Elizabeth Yetunde
Adedibu, Okuyinka Bosola
Oloyede-Kamiyo, Qudrah Olaitan
Nwogwugwu, Joy Oluchi
Akinbode, Oluwafolake Adenike
Salihu, Shina
Offord, Lisa Clare
Buddie, Alan Graham
Ofuya, Thomas Inomisan
author_facet Ogunfunmilayo, Akindele Oluwole
Kazeem, Shakiru Adewale
Idoko, Joy Ejemen
Adebayo, Raphael Abiodun
Fayemi, Elizabeth Yetunde
Adedibu, Okuyinka Bosola
Oloyede-Kamiyo, Qudrah Olaitan
Nwogwugwu, Joy Oluchi
Akinbode, Oluwafolake Adenike
Salihu, Shina
Offord, Lisa Clare
Buddie, Alan Graham
Ofuya, Thomas Inomisan
author_sort Ogunfunmilayo, Akindele Oluwole
collection PubMed
description Fall armyworm (FAW; Spodoptera frugiperda), an exotic moth which recently invaded Africa, is a highly destructive pest of cereals especially maize a highly valued staple crop in Nigeria. The use of natural enemies such as predators or parasitoids for FAW control is more economically viable and environmentally safer than currently recommended synthetic insecticides. Natural enemies to combat the pest have not yet been reported in Nigeria. An exploration for the pests’ natural enemies was undertaken by collecting FAW eggs and larvae from maize fields. These were reared in the laboratory for emergence, identification and efficacy as natural enemies. This yielded Euplectrus laphygmae (Hymenoptera: Eulophidae); Telenomus remus (Hymenoptera: Platygastridae) and Trombidium sp. (Acari.: Trombidiidae). Cotesia or Apanteles spp. were inferred to occur since Stictopisthus sp. (Hym.: Ichneumonidae), a secondary parasitoid, that attacks cocoons of Microgasterinae (e.g. Cotesia, Apanteles etc.) also emerged. Species of yet-to-be identified predators were also observed in various niches of maize plants. A positive relationship was found between FAW instar and the number of E. laphygmae eggs/instar ranging, on average, from 1.5 on second instar to 5.5 on fourth instars hosts. Parasitism rate of T. remus on FAW eggs was 100%. Parasitic mite infestation resulted in increasing paleness, reduced feeding, growth and movement as well as death of FAW 1(st) instars. Thus, the occurrence of FAW natural enemies in Nigeria calls for advocacy campaign to incorporate their use into integrated pest management strategies that attract and allow natural enemies to thrive for FAW management.
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spelling pubmed-82748712021-07-27 Occurrence of natural enemies of fall armyworm, Spodoptera frugiperda (Lepidoptera: Noctuidae) in Nigeria Ogunfunmilayo, Akindele Oluwole Kazeem, Shakiru Adewale Idoko, Joy Ejemen Adebayo, Raphael Abiodun Fayemi, Elizabeth Yetunde Adedibu, Okuyinka Bosola Oloyede-Kamiyo, Qudrah Olaitan Nwogwugwu, Joy Oluchi Akinbode, Oluwafolake Adenike Salihu, Shina Offord, Lisa Clare Buddie, Alan Graham Ofuya, Thomas Inomisan PLoS One Research Article Fall armyworm (FAW; Spodoptera frugiperda), an exotic moth which recently invaded Africa, is a highly destructive pest of cereals especially maize a highly valued staple crop in Nigeria. The use of natural enemies such as predators or parasitoids for FAW control is more economically viable and environmentally safer than currently recommended synthetic insecticides. Natural enemies to combat the pest have not yet been reported in Nigeria. An exploration for the pests’ natural enemies was undertaken by collecting FAW eggs and larvae from maize fields. These were reared in the laboratory for emergence, identification and efficacy as natural enemies. This yielded Euplectrus laphygmae (Hymenoptera: Eulophidae); Telenomus remus (Hymenoptera: Platygastridae) and Trombidium sp. (Acari.: Trombidiidae). Cotesia or Apanteles spp. were inferred to occur since Stictopisthus sp. (Hym.: Ichneumonidae), a secondary parasitoid, that attacks cocoons of Microgasterinae (e.g. Cotesia, Apanteles etc.) also emerged. Species of yet-to-be identified predators were also observed in various niches of maize plants. A positive relationship was found between FAW instar and the number of E. laphygmae eggs/instar ranging, on average, from 1.5 on second instar to 5.5 on fourth instars hosts. Parasitism rate of T. remus on FAW eggs was 100%. Parasitic mite infestation resulted in increasing paleness, reduced feeding, growth and movement as well as death of FAW 1(st) instars. Thus, the occurrence of FAW natural enemies in Nigeria calls for advocacy campaign to incorporate their use into integrated pest management strategies that attract and allow natural enemies to thrive for FAW management. Public Library of Science 2021-07-12 /pmc/articles/PMC8274871/ /pubmed/34252127 http://dx.doi.org/10.1371/journal.pone.0254328 Text en © 2021 Ogunfunmilayo et al https://creativecommons.org/licenses/by/4.0/This is an open access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
spellingShingle Research Article
Ogunfunmilayo, Akindele Oluwole
Kazeem, Shakiru Adewale
Idoko, Joy Ejemen
Adebayo, Raphael Abiodun
Fayemi, Elizabeth Yetunde
Adedibu, Okuyinka Bosola
Oloyede-Kamiyo, Qudrah Olaitan
Nwogwugwu, Joy Oluchi
Akinbode, Oluwafolake Adenike
Salihu, Shina
Offord, Lisa Clare
Buddie, Alan Graham
Ofuya, Thomas Inomisan
Occurrence of natural enemies of fall armyworm, Spodoptera frugiperda (Lepidoptera: Noctuidae) in Nigeria
title Occurrence of natural enemies of fall armyworm, Spodoptera frugiperda (Lepidoptera: Noctuidae) in Nigeria
title_full Occurrence of natural enemies of fall armyworm, Spodoptera frugiperda (Lepidoptera: Noctuidae) in Nigeria
title_fullStr Occurrence of natural enemies of fall armyworm, Spodoptera frugiperda (Lepidoptera: Noctuidae) in Nigeria
title_full_unstemmed Occurrence of natural enemies of fall armyworm, Spodoptera frugiperda (Lepidoptera: Noctuidae) in Nigeria
title_short Occurrence of natural enemies of fall armyworm, Spodoptera frugiperda (Lepidoptera: Noctuidae) in Nigeria
title_sort occurrence of natural enemies of fall armyworm, spodoptera frugiperda (lepidoptera: noctuidae) in nigeria
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8274871/
https://www.ncbi.nlm.nih.gov/pubmed/34252127
http://dx.doi.org/10.1371/journal.pone.0254328
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