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32199

Effect of Two Egyptian Cotton Varieties on Development and Life Table of the Two-Spotted Spider Mite, Tetranychus urticae Koch (Acari: Tetranychidae) in Relation to Leaf Chemical Contents

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Last updated: 22 Jan 2023

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Abstract

The development and life table of the two-spotted spider mite, Tetranychus urticae Koch (Acari: Tetranychidae) were studied when reared on two Egyptian cotton varieties: Giza 86 and Giza 90 at laboratory conditions of 27±2°C and 60±5% R.H. Results cleared that the development of T. urticae female was significantly affected by cotton variety.  Immatures developmental time was shorter on Giza 90 (3.82 days) than Giza 86 (9.86 days). The adult female longevity averaged 12.29 and 16.65 days on Giza 90 and Giza 86, respectively. In addition, the values of Net reproductive rate (Ro), Intrinsic rate of natural increase (rm) and Finite rate of increase per day (λ) of T. urticae were (65.04, 0.407 and 1.502 days) and (31.95, 0.184 and 1.202 days) on Giza 90 and Giza 86, respectively. The female fecundity recorded 98.63 and 71.00 eggs / female on Giza 90 and Giza 86, respectively. The mean generation time (T) and generation doubling time (DT) values were the lowest on Giza 90 (10.27, 1.702 days) than Giza 86 (18.82, 3.766 days), respectively. A positive significant correlation was recorded between development, fecundity of T. urticae female and availability leaf nitrogen content.

DOI

10.21608/eajbsa.2019.32199

Keywords

Tetranychus urticae, Cotton varieties, life table parameters, leaf contents

Authors

First Name

Azza

Last Name

Mohamed

MiddleName

A.

Affiliation

Department of Cotton and Field Crops Mites, Plant Protection Research Institute, Agricultural research Center, Nadi El-Said St., Dokki, Giza, 12311 Cairo, Egypt

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Orcid

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First Name

Fatma

Last Name

Kalmosh

MiddleName

Sh.

Affiliation

Department of Cotton and Field Crops Mites, Plant Protection Research Institute, Agricultural research Center, Nadi El-Said St., Dokki, Giza, 12311 Cairo, Egypt

Email

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City

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Orcid

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First Name

Hany

Last Name

El-Kawas

MiddleName

M.

Affiliation

Department of Cotton and Field Crops Mites, Plant Protection Research Institute, Agricultural research Center, Nadi El-Said St., Dokki, Giza, 12311 Cairo, Egypt

Email

hmg733@yahoo.com

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Volume

12

Article Issue

3

Related Issue

5287

Issue Date

2019-06-01

Receive Date

2019-04-29

Publish Date

2019-06-01

Page Start

63

Page End

72

Print ISSN

1687-8809

Online ISSN

2090-0813

Article File

EAJBSA_Volume 12_Issue 3_Pages 63-72.pdf

PDF . 1.1MB

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https://eajbsa.journals.ekb.eg/article_32199.html

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https://eajbsa.journals.ekb.eg/service?article_code=32199

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Original Article

Type Code

667

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Journal

Publication Title

Egyptian Academic Journal of Biological Sciences. A, Entomology

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

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Article

Created At

22 Jan 2023