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197578

BIOLOGICAL AND BIOCHEMICAL EFFECTS OF THE MICROBIAL INSECTICIDE MYCOTAL AND LINSEED OIL ON THE PINK BOLLWORM PECTINOPHORA GOSSYPIELLA (SAUND.)

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Last updated: 05 Jan 2025

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Abstract

Entomopathogenic fungi Verticillium lecanii and linseed oil were
used alone or in sequence to evaluate their direct and latent effect on
newly hatched larvae of susceptible strain of the Pectinophora
gossypiella (Saund.) under constant conditions 26±1Co and 80-85 % RH.
LC50 & LC 25 values for these two materials were estimated which was
1.5 x 10 7& 0.5x10 7 spores for V. Lecanii and 4ml & 2ml for linseed oil.
Percentage of larval, pupal mortality and adult emergence were
estimated. The latent effect of the survived larvae was considered and the
obtained results could be summarized as follows: V. lecanii, linseed oil,
or both produced mortality after 1 day, ranging between 1.8 and 37%.
PBW neonate was more sensitive to linseed oil than to V. lecanii. Larval
period was 15.35, 17.79 and 18.16 days, respectively, when neonate was
fed on V. lecanii, linseed oil and the sequence treatment compared with
12.3 days for untreated control. Pupal duration increased significantly in
all treatments. Fungi and linseed oil treatments prolonged larval and
pupal durations and shortened the adult stages. Weights of 4th instar
larvae resulted from the V. Lecanii /line seed oil treatment were greatly
reduced to 0.009 mg, while increased to 0.034 mg for larvae treated with
linseed oil. Also, pathogenic fungi, sequence treatment followed by
linseed oil alone affected on some biological characters such as fecundity
of emerged females, eggs hatchability percentage and longevity of males
and females. In addition, carbohydrate hydrolyzing enzymes,
tranamenase enzymes, total soluble protein & total lipid were affected
after 10 days of treatment of the newly hatched larvae.

DOI

10.21608/fjard.2006.197578

Keywords

Entomopathogenic fungi Veticillium lecanii, linseed oil, pink bollworm, Pectinophora gossypiella (Saund.), biology, biochemical

Authors

First Name

Mervat, A. A.

Last Name

Kandeel

MiddleName

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Affiliation

Plant Protection Research Institute, Agricultural Research Center, Dokki-Giza, Egypt.

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Orcid

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First Name

Amira, M.

Last Name

Rashad

MiddleName

-

Affiliation

Plant Protection Research Institute, Agricultural Research Center, Dokki-Giza, Egypt.

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Volume

20

Article Issue

1

Related Issue

27951

Issue Date

2006-01-01

Receive Date

2021-10-03

Publish Date

2006-01-01

Page Start

228

Page End

239

Print ISSN

1110-7790

Online ISSN

2805-2528

Article File

FJARD_Volume 20_Issue 1_Pages 228-239.pdf

PDF . 291.2kB

Link

https://fjard.journals.ekb.eg/article_197578.html

Detail API

https://fjard.journals.ekb.eg/service?article_code=197578

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Research articles.

Type Code

1,920

Publication Type

Journal

Publication Title

Fayoum Journal of Agricultural Research and Development

Publication Link

https://fjard.journals.ekb.eg/

MainTitle

BIOLOGICAL AND BIOCHEMICAL EFFECTS OF THE MICROBIAL INSECTICIDE MYCOTAL AND LINSEED OIL ON THE PINK BOLLWORM PECTINOPHORA GOSSYPIELLA (SAUND.)

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Article

Created At

23 Jan 2023