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154399

Seasonal Abundance of Icerya aegyptiaca (Douglas) on Mandarin Trees and its Associated Predators at Giza Governorate

Article

Last updated: 04 Jan 2025

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Abstract

The present work was carried out in Giza Governorate to study the seasonal abundance of the Egyptian mealybug Icerya aegyptiaca (Douglas) (Coccoidea : Monophlebidae) during (2016-2017) which attacking mandarin trees Citrus reticulata Blanco (Rutaceae) and its main associated predatory insects. Also, study effect of biotic and abiotic factors on the seasonal abundance of its stages. The obtained data showed that, nymphs, adult females, ovipositing females and the total population of I. aegyptiaca recorded three peaks on mandarin trees during (2016 -2017). These peaks of total population of I. aegyptiaca, occurred on June, August and December. The highest peak recorded in 15th August (2016 -2017).The results revealed that, three peaks were recorded for Rodolia cardinalis (Mulsant) (Coleoptera: Coccinellidae) and Chrysoperla carnea (Steph.) (Neuroptera: Chrysopidae), during the two successive years of study. Simple correlation coefficient indicated that, the relationship between I. aegyptiaca and its associated predators assured that, a highly positive significant effect during (2016-2017). The temperature showed a positive significant effect on the population of I. aegyptiaca. The common effect of biotic and abiotic factors was 90.56% and 92.92% of the nymph stages, adult females was (87.11% & 88.36%), ovipositing females was (94.16% & 90.09%) and total populations was (94.16% & 84.35%) during (2016-2017).

DOI

10.21608/jppp.2021.154399

Keywords

seasonal abundance, Egyptian mealybug, Icerya aegyptiaca, Rodolia cardinalis, Chrysoperla carnea. Mandarin trees

Authors

First Name

Samah

Last Name

Helmy

MiddleName

M. Y.

Affiliation

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

Email

samah.yassien407@gmail.com

City

-

Orcid

-

Volume

12

Article Issue

2

Related Issue

22571

Issue Date

2021-02-01

Receive Date

2021-03-07

Publish Date

2021-02-01

Page Start

125

Page End

129

Print ISSN

2090-3677

Online ISSN

2090-3758

Link

https://jppp.journals.ekb.eg/article_154399.html

Detail API

https://jppp.journals.ekb.eg/service?article_code=154399

Order

7

Type

Original Article

Type Code

888

Publication Type

Journal

Publication Title

Journal of Plant Protection and Pathology

Publication Link

https://jppp.journals.ekb.eg/

MainTitle

Seasonal Abundance of Icerya aegyptiaca (Douglas) on Mandarin Trees and its Associated Predators at Giza Governorate

Details

Type

Article

Created At

22 Jan 2023