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Register a new userEcological 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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لقد تمّ اختيار ثلاث محطات على طول المجرى السّفلي لنهر الصّنوبر، أُجريت فيها دراسات بيئية وتصنيفية للرخويات المائية العذبة التي تقطنها وذلك في الفترة الممتدة بين 4/3/2012 وحتى تاريخ 4/8/2013 م. نعرض في هذا البحث نتائجَ الدراسة البيئية لبطني القدمValvatasaulcyi الذي توجد أفراده بكثرة في إحدى المحطات الثّلاث المذكورة أعلاه في المجرى السّفلي لنهر الصّنوبر (محافظة اللاذقية - سورية) وهي المحطة الثّالثة التي تبعد 5 كم عن المصب في البحر الأبيض المتوسط. لقد تمّ التعرّف على عشرة أنواع من الرّخويات، ثمانية أنواع منها تنتمي إلى صف الرّخويات بطنيات القدم Gastropoda (أربعة أنواع من تحت صف أماميات الغلاصم Prosobranchia، وأربعة أنواع من تحت صف الرّئويات Pulmonata) ونوعان ينتميان إلى صف ثنائيات المصراع .Bivalvia لقد تمّ تحديد الصّفات الفيزيائية والكيميائية لمياه المحطة المذكورة كما تمَّ التّركيز على دراسة جماعة الرّخوي Valvatasaulcyi وبنيتها، جُمعت العينات بمعدل مرة كل 15 يوماً، خلال فصول الرّبيع والصّيف والخريف، ومرّة واحدة شهرياً، خلال فصل الشّتاء. وقد تبيّن أنَّ التّكاثر مستمرٌ عند أفراد هذا النوع على مدار العام، مع وجود ذروتين للتكاثر: الأولى ربيعيّة مهمّة، والثّانية خريفية أقلّ أهمية. كما تمّت دراسة بنية الجماعة، حيث حددت أبعاد القواقع، وكذلك العلاقات بين النّمو في الارتفاع للقوقعة ونموها العرضي، فضلاً عن العلاقة بين النّمو في الارتفاع للقوقعة والوزن الجاف للحيوان بالكامل...
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 ….
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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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 a
nd 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
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was the most constant in all continuous samples and it was 100%
This research is a study of distribution of Patella caerulea in four locations of the Latakia shore different from each other by Substrate nature and their exposure to pollution sources. They are as follow : Afamia (A),Ibn Hani (B) ,harbor fishing of
Tower Islam (C), and the sandy beach of Tower Islam (D).
This study was achieved between January 2012 and January 2013 ,The samples were collected manually from the Supralittoral , Littoral and Sublittoral region(depth of two meters).The results of this study showed the following:
1 – The area A is the most suitable for the growth and reproduction of the Patella caerulea, which recorded the highest value of biomass reaching ( 3990.2 gr / m²), and the number of individuals (2128 ind /m²) .
2 - The area C recorded the lowest value of biomass (2872.47 gr/ m²) and the number of individuals (1632 ind / m²).
3 - Patella caerulea is consederied a Eurybiont as it was found in all the study areas .
4 - Patella caerulea is comercially important species .
Soccer game is one of the more games that players are exposed to sports injuries and the reason for this is due to the large increase of the practitioners of this game as well as the characteristics of this game that are frequently the friction betwe
en the players. Therefore, this studyis concerned to identify the causes leading to the occurrence of injuries in the lower limb among soccer players in the clubs lattakia city . In addition the comparison between the clubs of lattakia city from where the occurrence of lower limb injuries by variables ( Type - Classification of dangerous - Location – Form ) to the soccer players. The study sample included 43of the players from men's clubs in the city of Lattakia, where the questionnaire was designed and distributed to injured players and then were collected questionnaire by the researcher. The study found that there is a difference in the causesleading to the occurrence of sports injuries among soccer players in the club and another. In addition to that . different types of infections , forms , classification of seriousness and where they occur in the lower limb among football players between club and another .
Soccer game is one of the more games that players are exposed to sports injuries and the reason for this is due to the large increase of the practitioners of this game as well as the characteristics of this game that are frequently the friction betwe
en the players. Therefore, this studyis concerned to identify the causes leading to the occurrence of injuries in the lower limb among soccer players in the clubs lattakia city . In addition the comparison between the clubs of lattakia city from where the occurrence of lower limb injuries by variables ( Type - Classification of dangerous - Location – Form ) to the soccer players. The study sample included 43of the players from men's clubs in the city of Lattakia, where the questionnaire was designed and distributed to injured players and then were collected questionnaire by the researcher. The study found that there is a difference in the causesleading to the occurrence of sports injuries among soccer players in the club and another. In addition to that . different types of infections , forms , classification of seriousness and where they occur in the lower limb among football players between club and another .
Rural centers in Lattakia Governorate can receive groups of tourists in villages and provide them with residence. As a result of development and progress started in the 1980s, the Syrian rural areas have undergone principal structural changes. In thi
s Governorate, the rural centers are characterized by a good level of service in addition to natural and economic features as well as a rural person with a strong sense of self trust and developed intellectually, socially and medically. This is to be reflected in the reduction of unemployment as well as in the decline of migration from villages to cities. Therefore, it is useful to affiliate the social and economic development of the rural communities with the rural tourist industry in order to create economic and demographic stability and provide an additional source of income.
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