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Ecological Study on the Gastropod Valvatasaulcyi in One Station of the Lower Reach of AlSanawbar River-Lattakia

دراسة بيئية لبطني القدم Valvatasaulcyi في إحدى محطات المجرى السّفلي لنهر الصّنوبر- محافظة اللاذقية

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 Publication date 2014
and research's language is العربية
 Created by Shamra Editor




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Three sampling stations were chosen along the lower reach section of AlSanawbarriver (Lattakia-Syria). In these stations, the freshwater molluscs were studied, environmentally and taxonomically, during the period 4/3/2012 – 4/8/2013. In this research, I present the results of the environmental study on the Gastropod Valvatasaulcyiwhich was more abundant in the 3rd station; 5km of the estuary. Ten mollusc species were identified; 8 belonging to Gastropoda (4 of Prosobranchia & 4 of Pulmonata) and 2 belonging to Bivalvia. The chemical and physical properties of the water in the 3rd station were studied and the work was concentrated on Valvatasaulcyipopulation and structure, where samples were collected bimonthly during Spring, summer & autumn and monthly during winter. It was shown that reproduction of such species is continuous along the year, with 2 reproduction beaks: the more important one is spring beak and the less important one is autumn beak. The population structure of the species was studied: shell dimensions were measured and the relationships were studied between height growth and breadth growth of the shell, and between the breadth growth and dry weight of the individual ….


Artificial intelligence review:
Research summary
تتناول هذه الدراسة البيئية الرخويات بطنيات القدم Valvatasaulcyi في إحدى محطات المجرى السفلي لنهر الصنوير في محافظة اللاذقية بسوريا. تم اختيار ثلاث محطات على طول المجرى السفلي للنهر، وأجريت الدراسات البيئية والتصنيفية على الرخويات المائية العذبة التي تقطنها خلال الفترة من 4 مارس 2012 حتى 4 أغسطس 2013. تم تحديد عشرة أنواع من الرخويات، ثمانية منها تنتمي إلى صف بطنيات القدم وأربعة أنواع من تحت صف أماميات الغلاصم وأربعة أنواع من تحت صف الرئويات، ونوعان ينتميان إلى صف ثنائيات المصراع. ركزت الدراسة على جماعة الرخوي Valvatasaulcyi وبنيتها، حيث جمعت العينات بمعدل مرة كل 15 يوماً خلال فصول الربيع والصيف والخريف، ومرة واحدة شهرياً خلال فصل الشتاء. أظهرت النتائج أن التكاثر مستمر عند أفراد هذا النوع على مدار العام، مع وجود ذروتين للتكاثر: الأولى ربيعية مهمة، والثانية خريفية أقل أهمية. كما تم دراسة بنية الجماعة، حيث حددت أبعاد القواقع، والعلاقة بين النمو في الارتفاع والنمو العرضي للقوقعة، والعلاقة بين النمو في الارتفاع والوزن الجاف للحيوان بالكامل.
Critical review
دراسة نقدية: تعتبر هذه الدراسة ذات أهمية كبيرة في مجال البيئة والتصنيف الحيوي للرخويات المائية العذبة، حيث تقدم معلومات جديدة ومهمة عن توزيع وتكاثر الرخويات بطنيات القدم في نهر الصنوير. ومع ذلك، يمكن الإشارة إلى بعض النقاط التي قد تحتاج إلى تحسين. أولاً، كان من الممكن توسيع نطاق الدراسة ليشمل محطات إضافية على طول النهر للحصول على صورة أكثر شمولية. ثانياً، يمكن أن تكون هناك حاجة إلى مزيد من التحليل الكيميائي والفيزيائي للمياه لفهم تأثير العوامل البيئية على تكاثر ونمو الرخويات بشكل أفضل. وأخيراً، قد يكون من المفيد إجراء دراسات مماثلة على أنواع أخرى من الرخويات في نفس المنطقة لمقارنة النتائج وتقديم توصيات أكثر شمولية.
Questions related to the research
  1. ما هي الفترة الزمنية التي غطتها الدراسة؟

    غطت الدراسة الفترة من 4 مارس 2012 حتى 4 أغسطس 2013.

  2. كم عدد أنواع الرخويات التي تم تحديدها في الدراسة؟

    تم تحديد عشرة أنواع من الرخويات في الدراسة.

  3. ما هي ذروتا التكاثر عند الرخوي Valvatasaulcyi؟

    الذروة الأولى للتكاثر هي في الربيع وتعتبر مهمة، والذروة الثانية في الخريف وتعتبر أقل أهمية.

  4. ما هي العلاقة بين النمو في الارتفاع والنمو العرضي للقوقعة؟

    هناك علاقة خطية طردية بين النمو في الارتفاع والنمو العرضي للقوقعة، حيث كان النمو في الارتفاع أبطأ من النمو العرضي.


References used
ADAM W.,: Mollusquesterrestresetdulcioles. Faune de Belgigue. Inst. Ray. Sci. Nat Pelg. 1, (1960), 402
ALZONA C., Ma1acofuna ltaliea. Atti. soc. ital. sci. NAT. Mus. Civ. Stor. Nat. Milano., (1971) ,111, 435
(BROWN D. S: Fresh Water of Africa and Their Medical Importance(1980
DASTERNACE R. C.,: Life of animals 2 ed., Moscow, (1988), 446
DRAPARNAUD J. R. R.,:Tableau des Molluques, Terrestres et fluviatiles de la France, Paris, (1801), 116
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