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342089

EFFECT OF AN INSECT GROWTH INHIBITOR ON THE NEWLY HATCHED LARVAE OF PECTINOPHORA GOSSYPIELLA (SAUND.); CYANOX RESISTANT AND SUSCEPTIBLE STRAINS

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Last updated: 24 Dec 2024

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Abstract

Laboratory experiments were conducted using the growth inhibi­tor, CGA- 72662 against the newly hatched larvae of the pink bollworm Pectinophora gossypiella (Saund.) to evaluate its biological activity and latent effect on this pest. Data revealed that LC5o values were 176.2 and 1046.44 ppm for susceptible and cyanox resistant strains, respec­tively. Treating the newly hatched larvae of the two strains with LC25 concentrations of the compound (10.86 and 247.13 ppm)resulted in a significant reduction of the pupal weight, number of deposited eggs/ female and eggs hatchability. Reduction in pupal weight was more evi­dent in case of susceptible strain (32,51%) than the resistant one (7.8%). Compared to control , reduction in the mean number of deposit­ed eggs reached 54.9 and 43.95% for cyanox resistant and susceptible strains, respectively. However, reduction of egg hatchability was about 27% for the two strains. The compound could be fairly considered po­tent against the larvae of the pink bollworm.

DOI

10.21608/ejar.1999.342089

Authors

First Name

SAMER N.

Last Name

KOSTANDY

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Affiliation

Plant Protection Research Institute, Agricultural Research Centre, Giza, Egypt

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First Name

MONA F.

Last Name

ROFAIL

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Affiliation

Plant Protection Research Institute, Agricultural Research Centre, Giza, Egypt

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First Name

SUZAN H.

Last Name

TAHER

MiddleName

-

Affiliation

Plant Protection Research Institute, Agricultural Research Centre, Giza, Egypt

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Orcid

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First Name

ALIA

Last Name

ABDEL-HAFEZ

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-

Affiliation

Plant Protection Research Institute, Agricultural Research Centre, Giza, Egypt

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Volume

77

Article Issue

4

Related Issue

45828

Issue Date

1999-12-01

Receive Date

1998-03-12

Publish Date

1999-12-01

Page Start

1,477

Page End

1,484

Print ISSN

1110-6336

Online ISSN

2812-4936

Article File

EJAR_Volume 77_Issue 4_Pages 1477-1484.pdf

PDF . 1.9MB

Link

https://ejar.journals.ekb.eg/article_342089.html

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https://ejar.journals.ekb.eg/service?article_code=342089

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4

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Original Article

Type Code

1,041

Publication Type

Journal

Publication Title

Egyptian Journal of Agricultural Research

Publication Link

https://ejar.journals.ekb.eg/

MainTitle

EFFECT OF AN INSECT GROWTH INHIBITOR ON THE NEWLY HATCHED LARVAE OF PECTINOPHORA GOSSYPIELLA (SAUND.); CYANOX RESISTANT AND SUSCEPTIBLE STRAINS

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Article

Created At

24 Dec 2024