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12655

Threshold Temperatures and Thermal Requirements for the Development of the Olive Leaf Moth; Palpita unionalis Hbn. (Lepidoptera: Pyralidae)

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Last updated: 22 Jan 2023

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Abstract

Olive leaf moth, Palpita
unionalis (Hubner) (Lepidoptera: Pyralidae) is one of the dangerous pests
attacking sapling olive trees and nurseries, tender shoots and ripening fruits
inducing economic losses. Accordingly, great efforts were dedicated to reduce
its infestation. The current study aimed to calculate temperature thresholds (t0)
and accumulated heat units (dd's) for each stage of this pest as a primary step
for developing a forecasting system that will help to define the most precise
time for different control programs. The insect was reared under three
constant temperatures (17, 22 and 27°C each ± 1°C). The time required for
development through egg, larva, pupa and pre-ovipostion increased at lower
temperatures. The lower thresholds of development (t0) were 8.39,
11.46, 13.38 and 12.70°C for eggs, larvae, pupae and pre-oviposition period,
respectively. The average accumulated heat units required for their development
were 61.07, 238.81, 113.68 and 38.17 degree-days. On the other hand, the lower
threshold of development (t0) to complete a generation was 12.04°C
and the average accumulated heat units required for its development was 443.07
degree-days

DOI

10.21608/eajbsa.2017.12655

Keywords

Olive leaf moth, Palpita unionalis, accumulated heat units (degree-days), temperature threshold (t0)

Authors

First Name

Hassan

Last Name

Dahi

MiddleName

F.

Affiliation

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

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Orcid

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First Name

Walaa

Last Name

Ibrahim

MiddleName

G.

Affiliation

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

Email

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City

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Orcid

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First Name

Amany

Last Name

. Mansour

MiddleName

N.

Affiliation

Plant Protection Department, Desert Research Center, El Matariya, Cairo, Egypt.

Email

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City

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Orcid

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First Name

Ahmed

Last Name

Imam

MiddleName

I. 2

Affiliation

Plant Protection Department, Desert Research Center, El Matariya, Cairo, Egypt.

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Orcid

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Volume

10

Article Issue

3

Related Issue

2388

Issue Date

2017-05-01

Receive Date

2017-04-16

Publish Date

2017-05-01

Page Start

81

Page End

88

Print ISSN

1687-8809

Online ISSN

2090-0813

Article File

EAJBSA_Volume 10_Issue 3_Pages 81-88.pdf

PDF . 297.7kB

Link

https://eajbsa.journals.ekb.eg/article_12655.html

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https://eajbsa.journals.ekb.eg/service?article_code=12655

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Original Article

Type Code

667

Publication Type

Journal

Publication Title

Egyptian Academic Journal of Biological Sciences. A, Entomology

Publication Link

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

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Article

Created At

22 Jan 2023