Occurrence of natural enemies of fall armyworm, Spodoptera frugiperda (Lepidoptera: Noctuidae) in Nigeria
| Autor: | Joy Ejemen Idoko, Joy Oluchi Nwogwugwu, Alan G. Buddie, Shakiru Adewale Kazeem, Okuyinka Bosola Adedibu, Lisa Offord, Elizabeth Yetunde Fayemi, Thomas Inomisan Ofuya, Raphael Abiodun Adebayo, Qudrah Olaitan Oloyede-Kamiyo, Shina Salihu, Oluwafolake Adenike Akinbode, Akindele Oluwole Ogunfunmilayo |
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| Rok vydání: | 2021 |
| Předmět: |
0106 biological sciences
Integrated pest management Life Cycles Physiology Eggs 01 natural sciences Toxicology Larvae Reproductive Physiology Phylogeny Telenomus remus Likelihood Functions Mites Multidisciplinary Eulophidae biology Eukaryota Agriculture Plants Bird Eggs Insects Experimental Organism Systems Cotesia Larva Medicine Fall armyworm Chicken Eggs Apanteles Research Article Farms Arthropoda Science Nigeria Spodoptera Research and Analysis Methods Zea mays 010603 evolutionary biology Model Organisms Plant and Algal Models Animals Parasites Grasses Ovum Organisms Biology and Life Sciences biology.organism_classification Hymenoptera Invertebrates Maize 010602 entomology Ichneumonidae Predatory Behavior Animal Studies Pest Control PEST analysis Zoology Entomology Developmental Biology |
| Zdroj: | PLoS ONE PLoS ONE, Vol 16, Iss 7, p e0254328 (2021) |
| ISSN: | 1932-6203 |
| Popis: | 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 1st 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. |
| Databáze: | OpenAIRE |
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