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Evaluation of Some Environmentally Safe Cemicals Against Spodoptera littoralis

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Last updated: 01 Jan 2025

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Abstract

Toxicity effect of Dipel-2X, and three insect growth regulators IGRs: Diflubenzuron; Spiromesifen and Pyriproxyfen, were determined against 2nd larval instar of Spodoptera littoralis. The results showed that Diflubenzuron was the most potent toxicity followed by Spiromesifen; Pyriproxyfen, and Dipel-2X. The effect of LC50 of the tested IGRs on the in vivo inhibition of chitinase from Spodoptera littoralis was assayed. The interaction effect of Dipel-2X with IGRs was investigated. Results proved that pretreated of Dipel-2X with IGRs caused more toxicity effect than single treatment. The sensitivity of chitinase activity to the three tested IGRs was measured by the I50 values. The I50 values of Diflubenzuron; Spiromesifen and Pyriproxyfenon Lab strain larval chitinase are 0.54, 0.60 and 0.73µM respectively. While the I50 values are 0.60, 0.72 and 0.81µM respectively against Field strain. The results proved that chitinase was sensitive to the IGRs. Generally, Dipel-2X pretreated with IGRs will produce a new trend so as increase toxicity of the bioinsecticide, enhance the role of beneficial insects. The results of the present study may add some forward steps to use bioinsecticide as alternative to conventional insecticides especially against this insect. So, the tested compounds can be involved in important steps necessary for successful IPM programmes applied against S. littoralis.

DOI

10.21608/asejaiqjsae.2009.2466

Authors

First Name

Ismail

Last Name

Seham M.,

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Affiliation

Central Laboratory of Pesticides, Sabahia, Alexandria, A.R.C.

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Orcid

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First Name

M.

Last Name

Morshedy

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Affiliation

Pesticide Chemistry Dept., Fac. of Agrie., Alex., Univ.

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Volume

30

Article Issue

JANUARY- MARCH

Related Issue

465

Issue Date

2009-03-01

Receive Date

2009-03-15

Publish Date

2009-03-01

Page Start

121

Page End

127

Print ISSN

1110-0176

Online ISSN

2536-9784

Article File

ASEJAIQJSAE_Volume 30_Issue JANUARY- MARCH_Pages 121-127.pdf

PDF . 240.6kB

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https://asejaiqjsae.journals.ekb.eg/article_2466.html

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https://asejaiqjsae.journals.ekb.eg/service?article_code=2466

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Original Article

Type Code

53

Publication Type

Journal

Publication Title

Alexandria Science Exchange Journal

Publication Link

https://asejaiqjsae.journals.ekb.eg/

MainTitle

Evaluation of Some Environmentally Safe Cemicals Against Spodoptera littoralis

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Article

Created At

22 Jan 2023