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15738

Toxicicological evaluation and biochemical impacts for radient as a new generation of spinosyn on Spodoptera littoralis (Boisd.) larvae

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Last updated: 22 Jan 2023

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Abstract

Radiant SC12% (Spinetoram) is a new generation of spinosyn group. Effect of this bio-insecticide against larvae of Spodoptera littoralis (Boisd) was studied to evaluate the susceptibility of 2nd and 4th larval instars in laboratory. The LC50 of radiant was 0.05 and 0.03 ppm. After 24 and 48 hours, respectively for the 2nd larval instars. Where the LC50 were 6.67 and 2.86 ppm after 24 and 48 hours, respectively for the 4th larval instars. In the semi-field experiment, recommended doses of radiant exhibited high mortality 100 & 95.7 % after 0 and 1 days, respectively then decreased gradually to reach 58.1 % after 7 days. Also the field experiment showed high mortality 91.4% after 2 days then reduced gradually to reach 83.1% after 8 days. The effect of different concentrations in laboratory and recommended doses in field showed 100% mortality of entire hatched egg masses. Effect of recommended doses of radiant against predators inhabiting cotton field demonstrated that radiant was safe to natural enemies. The effect of  LC50 of radiant  on  the  major biochemical component of 4nd larval instars after 24 hours showed that, the amount of total carbohydrates, total proteins, carbohydrate hydrolyzing enzymes (invertase, trehalase and amylase), and acid & alkaline phosphates were significantly decreased. Where the acetylcholinstrase activity was significantly increased.

DOI

10.21608/eajbsa.2008.15738

Keywords

Radiant SC12%, Spinetoram, New generation of Spinosyn, Spodoptera littoralis ( Boisd ), Bio-chemical study

Authors

First Name

Nehad

Last Name

Elbarky

MiddleName

M.

Affiliation

Entomology Department-Faculty of Science Benha University

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Orcid

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First Name

Hassan

Last Name

Dahi

MiddleName

F.

Affiliation

Plant Protection Research Institute

Email

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City

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Orcid

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First Name

Yasser

Last Name

El-Sayed

MiddleName

A.

Affiliation

Entomology Department-Faculty of Science Benha University

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Volume

1

Article Issue

2

Related Issue

3405

Issue Date

2008-12-01

Receive Date

2018-10-03

Publish Date

2008-12-01

Page Start

85

Page End

97

Print ISSN

1687-8809

Online ISSN

2090-0813

Link

https://eajbsa.journals.ekb.eg/article_15738.html

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https://eajbsa.journals.ekb.eg/service?article_code=15738

Order

8

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/

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Article

Created At

22 Jan 2023