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195928

Evaluation of Native Entomopathogenic Nematode Isolates for the Management of Selected Insect Pests in Nigeria

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Last updated: 04 Jan 2025

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Abstract

Native entomopathogenic nematodes (EPNs) were evaluated for the management of three selected pests, Sesamia calamistis, Spodoptera frugiperda and Rhynchophorus ferrugineus in laboratory bioassays. The EPNs were isolated from soils from various locations within Ibadan, Nigeria using the greater wax moth (Galleria mellonella) as insect bait. A two-factor laboratory experimental assay was laid out in a completely randomized design and replicated three times. The EPN suspension was applied on insect larvae with distilled water as control. Number of days to mortality, percentage mortality of insect larvae, and total EPN population of infective juveniles (IJs) recovered from larval cadavers were assessed and reproductive factor (RF) determined.  Data were analyzed using analysis of variance, and means were separated using Tukey's Studentized Range Test at P<0.05. The number of days to mortality for inoculated larvae of S. calamistis, S. frugiperda, R. ferrugineus and G. mellonella were 6.43, 3.57, 8.80 and 6.20, respectively. The EPN population achieved percentage mortality of 82.0%, 54.0%, 60.0% and 84.0%, respectively for G. mellonella, S. calamistis, S. frugiperda and R. ferrugineus larvae respectively. Mean numbers of EPN IJs recovered from cadaver was in the order; R ferrugineus (9,407.0), >G. mellonella (5075.08), >S. frugiperda (3957.23), >S. calamistis (742.31). From the results, EPN had the greatest fecundity in G. mellonella and R. ferrugineus showing higher ability to be recycled. This study reveals the potential of native EPNs as a biocontrol agent of insect pests and emphasizes the need for a more environment-friendly and sustainable approach to insect pest management.

DOI

10.21608/ejaj.2021.195928

Keywords

biocontrol agents, insect mortality, Heterorhabditis sp, Sesamia calamistis Spodoptera frugiperda, Rhynchophorus ferrugineus

Authors

First Name

A.

Last Name

Ottun

MiddleName

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Affiliation

Dept. Crop Protection Environmental Biology, University of Ibadan, Ibadan, Nigeria

Email

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City

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Orcid

-

First Name

O.

Last Name

Alabi

MiddleName

-

Affiliation

Dept. Crop Protection Environmental Biology, University of Ibadan, Ibadan, Nigeria

Email

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City

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Orcid

-

First Name

Abiodun

Last Name

Claudius-Cole

MiddleName

O.

Affiliation

Dept. of Crop Protection and Env. Biology University of Ibadan

Email

bi_cole@yahoo.com

City

Ibadan

Orcid

-

Volume

20

Article Issue

2

Related Issue

26436

Issue Date

2021-07-01

Receive Date

2021-02-10

Publish Date

2021-07-01

Page Start

167

Page End

176

Print ISSN

1110-6158

Online ISSN

2735-4989

Link

https://ejaj.journals.ekb.eg/article_195928.html

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https://ejaj.journals.ekb.eg/service?article_code=195928

Order

10

Type

Original Article

Type Code

1,014

Publication Type

Journal

Publication Title

Egyptian Journal of Agronematology

Publication Link

https://ejaj.journals.ekb.eg/

MainTitle

Evaluation of Native Entomopathogenic Nematode Isolates for the Management of Selected Insect Pests in Nigeria

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Article

Created At

22 Jan 2023