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Morphological study of the tow-spotted spider mite Tetranychus urticae Koch 1836 & Carmine spider mite Tetranychus cinnabarinus (Boisduval 1867) (Acari: Tetranychidae) Populations from various Plant hosts in Lattakia Province

دراسة مورفولوجية لمجتمعات الأكاروس الأحمر ذي البقعتين Tetranychus urticae Koch 1836 والأكاروس القرمزي Tetranychus cinnabarinus (Boisduval 1867) (Acari: Tetranychidae) على عوائل نباتية مختلفة في محافظة اللاذقية

1719   0   43   0 ( 0 )
 Publication date 2013
  fields Plant Protecion
and research's language is العربية
 Created by Shamra Editor




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The accuracy of the taxon T. cinnabarinus (Boisduval 1867) as a distinct species, or as a synonym of Tetranychus urticae Koch 1836, is still standing as a controversial issue of taxonomy and as a point of discussion. T. cinnabarinus and T. urticae have been regarded in the first stage of this study as one species, and it was characterized depending on the distinctive characteristics of both genders. In the second stage, the two species were distinguished according to many morphological characters that have been recommended by authors cited T.cinnabarinus as a valid species. The efficiency of some measures adopted to distinguish both T. cinnabarinus and T. urticae were also tested. Measurements didn't match local samples that showed obvious differences, T. cinnabarinus & T. urticae are not likely to be considered as two different species according to recent researches. Both T. cinnabarinus and T. urticae were detected on various wild and cultivated host plants. One hundred samples of plants presented symptoms of tetranychid attacks were collected from different localities in Lattakia province. Both T. urticae and T. cinnabarinus were found on 29, 9 samples, respectively.


Artificial intelligence review:
Research summary
تناولت هذه الدراسة المورفولوجية لمجتمعات الأكاروس الأحمر ذي البقعتين (Tetranychus urticae Koch 1836) والأكاروس القرمزي (Tetranychus cinnabarinus Boisduval 1867) على عوائل نباتية مختلفة في محافظة اللاذقية. تم جمع العينات من مواقع مختلفة وتحليلها في مختبر الأكاروسات بمركز اللاذقية لتربية وتطبيقات الأعداء الحيوية. هدفت الدراسة إلى تحديد ما إذا كان T. cinnabarinus نوعًا مستقلاً أو مرادفًا لـ T. urticae. في المرحلة الأولى، تم التعامل مع النوعين كنوع واحد، وفي المرحلة الثانية تم فصلهما بناءً على الصفات المورفولوجية التي وضعها عدد من المصنفين. أظهرت النتائج أن المقاييس المعتمدة للفصل بين النوعين لم تتطابق مع النماذج المحلية، مما يدعم فكرة عدم اعتبارهما نوعين منفصلين. تم العثور على T. urticae في 29 عينة نباتية من أصل 100، بينما تم العثور على T. cinnabarinus في 9 عينات فقط. خلصت الدراسة إلى أن المعايير المورفولوجية المستخدمة للفصل بين النوعين غير كافية، وأوصت بإجراء دراسات تصنيفية موسعة تشمل الجوانب الجزيئية.
Critical review
دراسة نقدية: تعتبر هذه الدراسة خطوة مهمة في فهم التصنيف المورفولوجي للأكاروسات في محافظة اللاذقية. ومع ذلك، هناك بعض النقاط التي يمكن تحسينها. أولاً، كان من الأفضل تضمين تحليل جزيئي أكثر تفصيلاً لدعم النتائج المورفولوجية. ثانيًا، كان يمكن توسيع نطاق الدراسة ليشمل مناطق أخرى في سوريا للحصول على صورة أشمل. وأخيرًا، ينبغي مراعاة العوامل البيئية التي قد تؤثر على الصفات المورفولوجية للأكاروسات، حيث أن الاعتماد على الصفات المورفولوجية فقط قد لا يكون كافيًا لتحديد الأنواع بدقة.
Questions related to the research
  1. ما هو الهدف الرئيسي من هذه الدراسة؟

    الهدف الرئيسي هو دراسة وتوصيف كل من الشكلين الأخضر والأحمر لـ T. urticae في محافظة اللاذقية من الناحية المورفولوجية، وتقديم قاعدة بيانات تمهيدًا لتطبيق المقاربات الجزيئية لاحقًا.

  2. ما هي النتائج الرئيسية التي توصلت إليها الدراسة؟

    النتائج الرئيسية هي أن المعايير المورفولوجية المستخدمة للفصل بين T. urticae و T. cinnabarinus لم تتطابق مع النماذج المحلية، مما يدعم فكرة عدم اعتبارهما نوعين منفصلين.

  3. ما هي التوصيات التي قدمتها الدراسة؟

    أوصت الدراسة بإجراء دراسات تصنيفية موسعة تشمل الأنواع الأكاروسية المختلفة في الساحل السوري وتوسيع الدراسة لتشمل مناطق سورية كافة، بالإضافة إلى البدء بدراسات بيولوجية جزيئية.

  4. ما هي العوائل النباتية التي تم العثور عليها T. urticae و T. cinnabarinus في محافظة اللاذقية؟

    تم العثور على T. urticae في 29 عينة نباتية تشمل 17 نوعًا نباتيًا، بينما تم العثور على T. cinnabarinus في 9 عينات تشمل 8 أنواع نباتية.


References used
BAKER, E. W., TUTTLE, D. M. A guide to the spider mites(Tetranychidae) of the United States. Indira Publishing House ,West Bloomfield, USA.1994, 347
BOlland, H. R., GUTERREZ, J., FLECHTMANN, C. H. W. World catalogue of the spider mite family (Acari: Tetranychidae), with references to taxonomy, synonymy, host plants and distribution. Brill Academic Publishers ,Leyden, The Netherlands,1998, 392
BOUDREAUX, H.B. Revision of the two spotted spider mite (Acarina, Tetranychidae) complex, Tetranychus telarius (Linnaeus). Ann Entomol. Soc. Am, Vol. 49,1956, 43-49
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