| Titles |
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English :
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Infestation of oilseed crop, Canola with aphids and their associated parasitoids in northern Egypt
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Arabic :
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إصابة المحصول الزيتي، الكانولا بالمن والطفيليات المصاحبة له في شمال مصر
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| Abstract |
The rates of infestation of Canola plants with aphids and their associated parasitoids were studied, in the Research Stations, at Zarzoura and El-Nubariya (El-Beheira Governorate) and Sa.kha fields (Kafr El¬Sheikh Governorate) through December 2004 till April 2005. Also, the rates of aphid parasitism, emergence of parasitoids and their sex ratio were detennined. Results showed that the cruciferous aphid Brevicoryne brassicae (Linnaeus) was recorded from the three districts. Aphid populaaons increased during the periods of development and flowering of Canola plants and reached the highest levels in Nubariya than in Zarzoura . and Sakha fields: The rate of parasitism was highest during March reaching 78.00, 90.00 and 58.00% in Zarzoura, El-Nubariya and Sakha fields, respectively. A positive correlation was observed between the rate of aphids' parasitism and the emergence rate of parasitoids. The sex ratios of the emerged parasitoids recorded were 1: 1.1 or 1.2 (Males: Females). The identified parasitoid species were Diaretiellu rapae (Mc'Intosh) and Ephedrzes sp. (Hymenoptera: Aphidiidae). D. rapae was the most common parasitoid emerging from the collected samples at the three localities. Ephednrs sp. did not emerge from aphid samples at Sakha fields but it occurred by late March and early April in Canola fields at Nubariya and in mid February at Zarzoura. The hyperparasitoid species, Alloxysta sp. (Hymenoptera: Cynipoidea: Charipidae: Alloxystinae) occurred associated with the primary parasitoids at Zarzoura fields only in April.
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| Publication year |
2006
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| Pages |
1-11
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| Availability location |
معهد بحوث وقاية النباتات - ش نادى الصيد - الدقى - جيزة
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| Availability number |
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| Organization Name |
Plant Protection Research Institute (PPRI)
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| City |
القاهرة
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| serial title |
مجلة الجمعية المصرية-الألمانية لعلم الحيوان
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| Web Page |
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| ISSN |
1110-5364
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| Department |
Biological Control
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| Author(s) from ARC |
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| Agris Categories |
Pests of plants
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AGROVOC
TERMS |
Aphidoidea.
Braconidae.
Brassica napus.
Brevicoryne brassicae.
Hymenoptera.
Infestation.
Oil crops.
Parasites.
Parasitoids.
Rapeseed oil.
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| Publication Type |
Journal
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