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196912

The Role of Entomopathogenic Fungus, Beauveria bassiana (Bals.) Vuill. in Reducing Population Densities of Refugee Insect Pests to Dry Okra Pods During Winter

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Last updated: 03 Jan 2025

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Abstract

The present work was carried out during two successive seasons, being 2019/20 and 2020/21 in three locations in Gharbia governorate to explain the role of entomopathogenic fungi (EPF) in decreasing insect pest populations inhabiting okra dry pods during the winter period. Three insect pest species were found in the okra dry pods: the cotton seed bug, Oxycarenus hyalinipennis (Costa) (Hemiptera: Lygaeidae), the cotton pink bollworm, Pectinophora gossypiella (Saunders) (Lepidoptera: Gelechiidae) and the cotton spiny bollworm, Earias insulana (Boisd.) (Noctuidae: Lepidoptera). The EPF, Beauveria bassiana (Bals.) Vuill. was isolated from the 3 insect species in the winter months. The seasonal fungal incidence percentages were 3.04 and 10.73% in nymphs and adults of O. hyalinipennis, respectively in the first season and were 13.53 and 16.53% in the second one. The seasonal fungal incidence percentages on P. gossypiella larvae were 4.64 and 7.96% for the two seasons, respectively. Natural mortality with the fungus ranged from 4.32 to 14.16 and 4.32 to 20.63% in the two seasons, respectively. Whilst the seasonal fungal incidence percentage on E. insulana larvae were 6.02 and 5.23 % for the first and second seasons and the fungus was isolated for one time in each season. Results explained and approved the role of EPF as natural mortality factors against insect pest species in their winter microhabitats in Egypt. Accordingly, it encourages biological control advocates to utilize such natural enemies as biological control agents.

DOI

10.21608/eajbsa.2021.196912

Keywords

Beauveria bassiana, Oxycarenus hyalinipennis, Pectinophora gossypiella, Earias insulana, Dry okra pods, Incidence

Authors

First Name

El-Sheikh,

Last Name

F.

MiddleName

M.

Affiliation

Plant Protection Department, Faculty of Agriculture, Tanta University, Egypt

Email

el-sheikh@agr.tanta.edu.eg

City

-

Orcid

-

First Name

I.

Last Name

El-Shami

MiddleName

A.

Affiliation

Plant Protection Research Institute, Agricultural Research Center, Egypt

Email

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City

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Orcid

-

Volume

14

Article Issue

3

Related Issue

26413

Issue Date

2021-09-01

Receive Date

2021-08-17

Publish Date

2021-09-01

Page Start

95

Page End

102

Print ISSN

1687-8809

Online ISSN

2090-0813

Link

https://eajbsa.journals.ekb.eg/article_196912.html

Detail API

https://eajbsa.journals.ekb.eg/service?article_code=196912

Order

11

Type

Original Article

Type Code

667

Publication Type

Journal

Publication Title

Egyptian Academic Journal of Biological Sciences. A, Entomology

Publication Link

https://eajbsa.journals.ekb.eg/

MainTitle

The Role of Entomopathogenic Fungus, Beauveria bassiana (Bals.) Vuill. in Reducing Population Densities of Refugee Insect Pests to Dry Okra Pods During Winter

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Type

Article

Created At

22 Jan 2023