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197054

ACARICIDAL POTENTIAL AND REPRODUCTIVE IMPACT OF MARINE ALGA, Laurencia obtusa COMPOUNDS AGAINST Tetranychus urticae (Koch) and, Panonychus ulmi (Koch)

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Last updated: 05 Jan 2025

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Abstract

The red alga Laurencia obtusa (Huds), has long been known as
a reliable source of secondary metabolites. The toxicity of
dichloromethane extract and its fractions against Tetranychus
urticae (Koch) and Panonychus ulmi (Koch) spider mites was
assessed. Bioassay efficacy guided to isolate two halogenated
terpene and one nonterpenoid compounds. The latent effects of
three compounds were also investigated. The results showed that
the crude extract and its three fractions were active against both
mites. It was found that T. urticae was more sensitive than P. ulmi
to the isolated fractions of L. obtusa and to the reference acaricide
dicofol. The number of progeny and the longevity of the exposed
adults of both mites were used as criteria for the deleterious effects
of the fractions .It was observed that the three fractions showed
highly effect on the hatchability of eggs. Significant variations
were recorded on the reduction in total numbers of eggs/female
against the two mites.

DOI

10.21608/fjard.2009.197054

Keywords

marine alga, Laurencia obtusa, Bioactivities, Mites

Authors

First Name

Eman S.

Last Name

Swelam

MiddleName

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Affiliation

Department of Economic Entomology & Pesticides, Faculty of Agriculture, Cairo University, Egypt

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City

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Orcid

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First Name

Samia

Last Name

EL-Kabbany

MiddleName

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Affiliation

Department of Economic Entomology & Pesticides, Faculty of Agriculture, Cairo University, Egypt

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Volume

23

Article Issue

2

Related Issue

27890

Issue Date

2009-07-01

Receive Date

2021-09-30

Publish Date

2009-07-01

Page Start

12

Page End

21

Print ISSN

1110-7790

Online ISSN

2805-2528

Article File

FJARD_Volume 23_Issue 2_Pages 12-21.pdf

PDF . 476.6kB

Link

https://fjard.journals.ekb.eg/article_197054.html

Detail API

https://fjard.journals.ekb.eg/service?article_code=197054

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2

Type

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

ACARICIDAL POTENTIAL AND REPRODUCTIVE IMPACT OF MARINE ALGA, Laurencia obtusa COMPOUNDS AGAINST Tetranychus urticae (Koch) and, Panonychus ulmi (Koch)

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Article

Created At

23 Jan 2023