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DEVELOPMENTAL THRESHOLDS AND THERMAL REQUIREMENTS NEEDED FOR THE COTTON PINK BOLLWORM PECTINOPHORA GOSSYPIELLA (SAUNDERS)

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Last updated: 03 Jan 2025

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Abstract

The present study was conducted on the cotton pink bollworm, Pectinophora gossypiella (Saunders.) (Lepidoptera: Gelechiidae) the most devastative insect pest to cotton cultivations in Egypt. It causes great damage and loss in the cotton yield. All experiments were carried out in the laboratory of the environmental study, Department of Plant Protection, Faculty of Agric., Ain Shams Univ. aiming to estimate some biological parameters of P. gossypiella reared on artificial diet at four constant temperatures 18, 20, 25, 30oC with 65±5% RH, then determine threshold of development and thermal constant for each of the developmental stages and complete generation. Obtained results demonstrated that the duration of each developmental stage of P. gossypiella highly affected by the change of temperature. The incubation period of eggs greatly varied at different temperature, these periods were 10.86, 10.29, 6.00 and 4.00 days at 18, 20, 25 and 30oC, respectively. Threshold of development for P. gossypiella egg stage was 12.1oC. The mean of duration for P. gossypiella larvae, pupae were 30.40, 14.10 days and the durations for male, female and generation were 24.72, 26.99 and 57.95 days, respectively. The longest duration of larvae, pupae, male and female moths were 47.61, 20.13, 33.59 and 33.68 days recorded at 18oC while the shortest durations were 16.60, 7.40, 13.75 and 14.64 days recorded at 30oC for larvae, pupae, male and female moths, respectively. The threshold of development for P. gossypiella larval, pupal, male, female stages was 11.6, 12.1, 9.8, 9.5oC, respectively. The threshold of development for P. gossypiella generation was 11.7oC. Based on the estimated threshold of development and duration of each developmental stage at the respective rearing temperature, the average of thermal constant was estimated as 73.59 for egg stage, 298.76 for larvae, 124.98 for pupae, 299.49 for adult male, 338.96 for adult female and 567.80 DDs for P. gossypiella generation.

DOI

10.21608/ajs.2019.17436.1092

Keywords

Pectinophora gossypiella, pink bollworm, developmental threshold, thermal constant

Authors

First Name

Ahmed

Last Name

Ali

MiddleName

Adel

Affiliation

Plant Protection Dept., Fac. Agric., Ain Shams

Email

ahmed_adel_aly@agr.asu.edu.eg

City

-

Orcid

0000-0003-1514-9724

First Name

Mohamed

Last Name

Abdelwahed

MiddleName

Salem

Affiliation

Dept. of Plant Protection, Fac. Agric., Ain Shams Univ.

Email

mohamed_abdelwahad1@agr.asu.edu.eg

City

-

Orcid

-

First Name

Azza

Last Name

Abdelrahman

MiddleName

Kamal

Affiliation

Plant Protection Dept., Fac. Agric., Ain Shams Univ.

Email

zizikamal@hotmail.com

City

-

Orcid

-

First Name

Youssef

Last Name

Youssef

MiddleName

Azzeldin

Affiliation

Plant Protection Dept., Fac. Agric., Ain Shams Univ.

Email

youssefabd10@hotmail.com

City

-

Orcid

-

Volume

27

Article Issue

4

Related Issue

11426

Issue Date

2019-11-01

Receive Date

2019-09-28

Publish Date

2019-11-01

Page Start

2,303

Page End

2,313

Print ISSN

1110-2675

Online ISSN

2636-3585

Link

https://ajs.journals.ekb.eg/article_76162.html

Detail API

https://ajs.journals.ekb.eg/service?article_code=76162

Order

21

Type

Original Article

Type Code

668

Publication Type

Journal

Publication Title

Arab Universities Journal of Agricultural Sciences

Publication Link

https://ajs.journals.ekb.eg/

MainTitle

DEVELOPMENTAL THRESHOLDS AND THERMAL REQUIREMENTS NEEDED FOR THE COTTON PINK BOLLWORM PECTINOPHORA GOSSYPIELLA (SAUNDERS)

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Article

Created At

22 Jan 2023