| Titles |
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English :
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Seasonal fluctuations and generations of Lecanium acuminatum Signoret (Homoptera: Coccidae) and its associated parasitoids on mango trees at Sharkia Governorate. Egypt
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Arabic :
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التقلبات الموسمية وعدد الأجيال لحشرة المانجو القشرية الرخوة Homoptera: Coccidae)) Lecanium acuminatum Signoret والطفيليات المصاحبة لها على أشجار المانجو بمحافظة الشرقية
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| Abstract |
Studies on the seasonal fluctuations of Lecanium acuminatum Signoret and its associated parasitoids on mango trees were carried out in Inshas El- Raml district, Sharkia Governorate during two successive years (2007-2008 and 2008-2009). The obtained results revealed that the females, nymphs and total alive stages had two peaks of activity yearly in both top and bottom levels of the trees. The total numbers of nymphs were 14282 and 24323 in the top level and 15444 and 25974 in the bottom level during the two years, respectively. The total numbers of alive stages in the top and bottom levels of the trees were 14553 and 24611 corresponded to 16090 and 27331 individuals during the two successive years. Generally, the insect population in the second year was obviously higher in comparison with that in the first one. Aphytis sp., Metaphycus sp. and Habrolepis pascuorum Merect were recorded as parasitoids of L. acuminatum. The pest activity appeared three generations annually either in the top and bottom levels of mango trees. Each generation was lasted about 4 months. They periods were from March to June, July to October and November to February, respectively. The second and third generations were the powerful ones in both years. The total effects of abiotic factors (Temp.ºC, RH% and Light intensity Lux) under this study on the total numbers of alive stages of the pest during the two years were 77.88 and 33.02 % in the top level and 88.59 and 38.17% in the bottom one, successively.
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| Publication year |
2009
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| Pages |
347–367
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| Organization Name |
Plant Protection Research Institute (PPRI)
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| City |
الزقازيق
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| serial title |
المجلة المصرية للعلوم التطبيقية
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| ISSN |
1110-1571
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| Author(s) from ARC |
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| External authors (outside ARC) |
على عبد الحميد شاهين
كلية الزراعة – جامعة الزقازيق
كامل عبد اللطيف عبد الله حماد
كلية الزراعة – جامعة الزقازيق
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| Agris Categories |
Protection of plants - General aspects
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AGROVOC
TERMS |
Aphytis.
Coccus.
Homoptera.
Metaphycus.
Parasitoids.
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| Publication Type |
Journal
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