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Register a new userBiological study of Cacopsylla bidens (Sluc.) (Psyllidae: Homoptera) in Southern Syria
دراسة بيولوجية لحشرة بسيلا الإجاص (Psyllidae: Homoptera) Cacopsylla bidens (Sluc.) في جنوب سورية
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Damascus University ورقة بحثية
Publication date
2004
fields
Plant Protecion
and research's language is
العربية
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Shamra Editor
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درست دورة حياة حشرة بسيلا الإجاص (.Sulc (bidens Cacopsylla في جنوب سورية في كل من ريف دمشق و السويداء في عامي 1999-2000 .عرفت هذه الحشرة أول مرة في سورية بوصفها نوعاً حشرياً وحيد العائل، تدخل الحشرة في طور السكون و هي في طور الحشرة الكاملة بالشكل الشتوي خارج بستان الإجاص في كل من الموقعين، تدخل الحشرات الكاملة بستان الإجاص في نهاية الـشتاء، تخـرج الحشرات الكاملة الصيفية بعد تساقط البتلات، و تستمر طيلة فصل الصيف حتى منتصف الخريف، و يخرج الشكل الشتوي في العشرة أيام الأولى من شهر آب. و تسهم الظروف الجوية غيـر الملائمـة و الأعـداء الحيوية المرافقة للآفة في هجرة الآفة بشكل مبكر خارج بستان الإجاص في فصل الخريف. جرى حـصر و تسجيل لأهم الأعداء الحيوية لهذه الحشرة من مفترسات و متطفلات طيلة فترة الدراسـة، و مـن أهـم المفترسات الحشرية: بق الأنثوكوريس (Fabricius (nemoralis Anthocoris ، و بق الأوريـوس Orius ،Deraecoris spp. الـديراكورس و بق ، Campylomma spp. الكامبيلاما و بق، horvanthi(Reuter) و بق االبسالوس .spp Psallus الذي سجل أول مرة في سورية في مواقع محددة في السويداء في منطقة الكفر على أشجار الإجاص البري الـسوري syriaca Pyrus فـي فـصل الـصيف. سـجل الطفيـل سورية في مرة أول) Encyrtidae:Hymenoptera) Trechnites psyllae (Rushka) (parasoitoid) على حوريات بسيلا الإجاص بوصفه طفيلاً سائداً، و بلغت أعلى نسبة تطفل له 66 % في محطـة بحـوث سرغايا في الجيل الخريفي، و سجل الطفيل (parasoitoid. ( spp Eunotus الذي لوحظ بكثافة قليلة في نهاية الموسم.
The life cycle of Cacopsylla bidens was studied in the souther region of Syria (Sweida) during 1999-2000. This insect was first identified in Syria as asole-host species, which enters the winter dormancy as an adult out of the pear orchards in both the sites. The insect enters the pear orchard at the end of the winter, and the summer adult insects emerge after the fall of flowers petals, and continue the whole. Summer up to mid of autumn, and the winter form emerges during the first 10 days of August. The harsh environmental conditions and the biological enemies (predators) push the insect to migrate out of the pear orchards during autumn. A survey and identification of the insect natural enemies was carried out during the whole study period, they were Anthocoris nemoralis, Orius horvanthi, Campylomma spp., Deraecoris spp., and Psallus spp., which registered on C. bidens at few locations, in Alkafer district on the trees of Pyrus Syriaca during summer. The encyrtidae parasoitoid Trechnites psyllae was registered for the first time in Syria on the nymphs of C. bidens as a dominant parasite. The highest percentage of parasite (66%) was found at Saragaia Researchs Station during the autumn generations. And also the parasite Ennotus spp. was noticed, but with low density at the end of the season.
References used
Al-kawaldeh, K., A. Bader &D. Burckhardt. 1997. (Psylloidae:Homoptera) of Jordan. Zoology of the Middle East. Heidelberg. Germany.15:71-82
Burckhardt, D. and I. D. Hodkenson. 1986. A revision of the Pest parsed pear psyllids (Hemiptera: Psyllidae). Bulletin of Entomological Research 76: 119-132
Burts, E. C. and R. H. Retan. 1969. Insect answers detection of pear psylla. Wash. State Univ. Mimco. 3069
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