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Some Physiological Observations on Date Palm Fruits during its infestation by the date palm dust mite, Oligonychus afrasiaticus (McGregor) (Acari: Tetranychidae)

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Last updated: 03 Jan 2025

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Abstract

The current study aimed to survey the phytophagous tetranychid mite, Oligonychus afrasiaticus (McGregor) Tetranychidae in different regions of Egypt. Also, the effect of O. afrasiaticus infestation on the different components of date palm fruits was determined after one month of filed infestation. The results showed that the O. afrasiaticus appeared infested the date palm fruits in New -Valley, Giza, and Marsa Matruh Governorates only and disappeared from the other tested locations of Egypt. It was observed from the study that O. afrasiaticus infested Barhi Variety (Fresh) with a rare number in Sharq El-Ewinate region (New –Valley) only. On the other hand, Siwi variety (Semi-dry) infested with O. afrasiaticus on date palm fruits in Baharia Oasis (Giza Governorate), Siwa Oasis region (Marsa Matruh), El-Kharga Oasis and Dakhla Oasis region (New -Valley ). However, it was noticed that Samani and Zaghloul (Fresh varieties) did not infest with O. afrasiaticus during this study. The current study indicated that the protein contents were decreased when the fruits exposed to the infestation by O. afrasiaticus where it was recorded 18.6 mg/gm of fruits in infested fruits compared to 26.37 mg/gm in non-infested fruits. The highest level of carbohydrate content was (445.0 mg/gm) in non-infested date palm fruits. While the lowest carbohydrates level (308.0 mg/gm) was found when the date fruits exposed to mite's infestation. The obtained data showed that the nitrogen content of infested date palm fruits was 3.33 ug/gm of fruits but the recorded level of nitrogen in non-infested fruits was 4.37 ug/gm of fruits.The lowest content of phosphorus (3.1 µg/gm) was observed with infested fruits compared with 7.43µg/gm in the case of non-infested fruits. There were slight differences in potassium contents(7.16 and 7.83 µg/gm ) between infested and non-infested date fruits respectively,.The biochemical data revealed that the level of calcium contents was slightly differed (16.4 and 16.67 µg/gm) in date palm fruits infested and non-infested with mite individuals of O. afrasiaticus, respectively.

DOI

10.21608/eajbsz.2020.112327

Keywords

Oligonychus afrasiaticus (McGregor), Date palm fruits, Physiological Observations, proteins, carbohydrates

Authors

First Name

Rania

Last Name

Mahmoud

MiddleName

H.

Affiliation

Plant Prot. Res. Inst., Agricultural Research Center ARC, Giza, Egypt.

Email

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City

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Orcid

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First Name

E.

Last Name

Yassin

MiddleName

M.A.

Affiliation

Plant Prot. Res. Inst., Agricultural Research Center ARC, Giza, Egypt

Email

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City

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Orcid

-

First Name

El-Shafei

Last Name

M.

MiddleName

W.K.

Affiliation

Dep. of Date Palm Pests and Diseases, Central Lab. for Date Palm, Agricultural Research Centre ARC, Giza, Egypt

Email

waelkamal27@yahoo.com

City

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Orcid

0000-0002-9746-7832

Volume

12

Article Issue

2

Related Issue

15675

Issue Date

2020-12-01

Receive Date

2013-07-05

Publish Date

2020-12-01

Page Start

67

Page End

74

Print ISSN

2090-0759

Online ISSN

2090-0821

Link

https://eajbsz.journals.ekb.eg/article_112327.html

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https://eajbsz.journals.ekb.eg/service?article_code=112327

Order

6

Type

Original Article

Type Code

672

Publication Type

Journal

Publication Title

Egyptian Academic Journal of Biological Sciences, B. Zoology

Publication Link

https://eajbsz.journals.ekb.eg/

MainTitle

Some Physiological Observations on Date Palm Fruits during its infestation by the date palm dust mite, Oligonychus afrasiaticus (McGregor) (Acari: Tetranychidae)

Details

Type

Article

Created At

22 Jan 2023