Detection of Organochlorinated Pesticides residue in sediments and some mollusks of Tartous coast

Concentrations of eight chlorinated pesticides: namely, gamma HCH, Heptachlor, heptachlore epoxide, aldrin, dieldrin, 4,4-DDE, 4,4-DDD, and 4,4-DDT were studied in some mollusks species Monodonta turbinata, Brachidontes variabilis , Patella caerulea, Trochus erithraeus, Strombus persicus and in sediments taken from five different locations: Assin estuary, Jobar estuary, Banias Thermal Electricity Station, Albasia, and Mirkiya River estuary. Sampling was performed at six different times during the period 2006-2007. Results indicated that Assin estuary contained the highest level of contamination followed by Jobar estuary and Mirkiya estuary where sampled mollusks species contained various concentrations of all of the studied pesticides. At Banias Thermal Electricity Station samples showed contamination with heptachlore and heptachlore epoxide only, whereas the concentration of pesticides at Albasia location, much lower than the other locations.

A contribution to study of molluscs in the lower reach of Alkebir Alshimaly river and some of it's tributaries Primary study

Six water stations were chosen along the lower reach section of AlKebir ALShimaly river and some of it's tributaries, differing in their biotic and abiotic features. Water and animal samples were collected bimonthly during spring, summer & autumn and monthly during winter during the period 25/8/2013 – 26/8/2014. Seventeen species of freshwater molluscs were identified in all stations, fifteen belonging to Gastropoda (6 of Prosobranchia & 9 of Pulmonata) and 2 belonging to Bivalvia, one of it (Corbicula fluminea) was recorded for the first time in Syrian Arab Republic. We focused on in this study on the station ( Mafraq Quesmeen) that we studied it's chemical and physical properties of the water and we identified 11 mollusc species and the most frequency of it was Melanopsis praemorsa and it's frequency rate was 46.48% and it was the most constant in all continuous samples and it was 100%

Using of network for the monitoring of some of organic pollutants in the Syrian marine environment

In This study it has been uses a network for monitoring the pollution with organochlorine pesticides in There marine stations at Lattakia coast: Fishing port, AfamiaCoast, High Institute Of Marine Research Coastusing Cages contained species of musselswitch are filter feeders Brachidontes varibilis. Samples had been collected from Lattakia coast. The results showed a great efficiency of the made network for monitoring the organic pollution in marine environment. It has been recorded a concentration of DDTs is accumulated lower than 2ng/g , Endosulfane and HCB is lower than 1 ng/g too. The results showed that the HCH compounds is dominant in all stations.organochlorine pesticides is accumulated mostly in the biota of station Fishing port, Afamia Coast

مساهمة في دراسة مجمعات رخويات المياه العذبة و توزعها الجغرافي في السفح الشرقي لجبل الحرمون

يأتي هذا البحث في إطار دراسة تتناول مجمعات رخويات المياه العذبة في جنوب سورية، الهدف منه تحديد أنواعها و توزعها. و قد أظهرت الدراسة وجود عشرة أنواع في مياه الينابيع و الجداول الواقعة في السفح الشرقي لجبال الحرمون. تنتمي تسعة منها إلى صف بطنيات القدم Gastropoda و نوع واحد إلى صف ذوات المصراعين Bivalvia.

مساهمة في دراسة مجمعات الرخويات البرية في محافظة دمشق و ريفها

قمنا في هذه الدراسة، و من خلال عينات من الرخويات، جمعت من القطاعات المختلفة لمحافظة ريف دمشق، بالتعرف على مجمعات أنواع الرخويات الأرضية المنتشرة فيها و قد سجلنا وجود ثمانية أنواع تنتمي إلى فصائل أربع: اثنان ينتميان إلى فصيلة Enidae و نوع ينتمي إلى فصيلة Leucochroeidés و أربعة أنواع تنتمي إلى فصيلة Helicidae و نوع ينتمي إلى فصيلة Helicellidae.