اعلانات هامة

The biodiversity study associated with free living protozoa is considered very important, especially ciliates that have large role in the environmental balance because they are an important ring in the feeding net and used as pollution bioindicators.

The most famous ciliates which belong to Hymenostomatida order but the associated scientific studies are very few in the world, especially in Syria.

Five sites were selected in Ufrin river in the north of Aleppo of  this preliminary study to Hymenostomatida biodiversity and they are The samples were collected from 5 areas   )17April lake, Jamrouk, Basota (2 Stations), and Abdulou Bridge( .

The specimens were collected from the surface and the bottom in each area. Three families were identified ( Cinetochilidae , Cyclidiidae  , Pleuronematidae  ),four genera (  Cinetochilum ,  Sathrophilus  ,  Pleuronema,   Cyclidium ),seven species(Pleuronema crassum , Pleuronema coronatum , Sathrophilus chlorophagus , Sathrophilus pyriformis, Cyclidium glaucoma , Cyclidium versatile ,  Cinetochilum margaritaceum ) and the distribution of these species were studied in the study sites.

Key Words: ciliates, Hymenostomatida, Cinetochilidae, Pleuronema coronatum.

تعد دراسة التنوع الحيوي المتعلقة بالأوليات حرة الحياة مهمة جداً، وبشكل خاص الهدبيات التي لها دوراً كبيراً في التوازن البيئي، فهي تشكل حلقة هامة في السلسلة الغذائية للكائنات الحية الأخرى، وتستخدم كمؤشرات حيوية للتلوث، ومن أبرز الهدبيات تلك التي تنتمي إلى رتبة غشائيات الفم Hymenostomatida. إلا أن الدراسات العلمية المتعلقة بها قليلة إلى حدٍ كبير على مستوى العالم وبشكل خاص في سورية.