Environmental and taxonomical study of parasitic Nematoda in Siganus rivulatus fish in coastal water of Lattakia- Syria

The study was performed to discover parasitic Nematoda in digestive system of Siganus rivulatus (Forsskal and Niebuhr, 1775) in beach water of Lattakia, and investigation the role of some ecological parameters on its distribution.

Determine of some of heavy metal in Boops boops in the coastal water of Lattakia

This research focuses on determining elemental concentrations of copper and lead (Cu &pb) in the muscles and liver Boops boops kind of the estuary of the AL Kabeer Alshemaly River and the fishing port and the promenade using atomic absorption technique. The results showed a significant increase in the concentrations of lead during summer 2014 in each of the muscle tissue and the liver of the fish examined (28.28ppm& 4.48ppm, respectively) at the mouth of the estuary of the AL Kabeer Alshemaly River and the fishing port and the promenade (11.19ppm& 3.75ppm, respectively), and this could be due to the different nature of human activities and sources of pollution to this element between the two regions. The results showed a marked seasonal change in the concentration of copper within the liver tissue of fish studied, where the highest concentration in the fishing port and the promenade( 5630.02 ppm) in autumn 2014, the Supreme( 3402.27ppm) value in the AL Kabeer Alshemaly River the estuary of summer. While the results did not show the variable in concentrations of copper in muscle . Theconcentrations were comparable between the two stations somewhat, with the highest concentrations in the summer in Bouth the fishing port and the promenade 1497.70ppm) and(1107.91 ppm) the AL Kabeer Alshemaly River. Results indicate that the accumulation of the studied elements (Cu &pb) in the liver compared to muscle (and the reason is boiled physiological differences in the functions of each of the two members) and to the existence of a good correlation between the concentration in the muscle changes with the typical length of which points to increased accumulation of these elements in these fish with increased growth,Noting the high concentration of the studied elements in females more than those recorded in males.

Morphological and histological study of gonads during the reproductive cycle and the dynamics of sex inversion in Lithognathus mormyrus in the coastal waters of Lattakia Governorate.

This research was carried out on 314 individuals of L. mormyrus fish caught in front of the shores of Lattakia Governorate (Al-Basit - Lattakia area - Jableh) during the period from 20-9-2012 until 16-9-2013 by different fishing methods used locally, especially the gulsim lined nets. and cages.

التوزّع العمودي لمجذافيات الأرجل Copepoda و تغيّراتها النوعية و الكميّة خلال فصلي الصيف و الشتاء في المنطقة الشاطئية لمدينة جبلة

Vertical sampling process took place to Copepoda during the summer and winter of 2009 and 2010 from Alzzouzo castle which is located in the coastal region of Jableh city. This region has special environmental properties. Sampling was accompanied with measuring water temperature, salinity, and dissolved oxygen in the water. The total number of samples studied in all areas of study is 106 samples. 100 species were identified during the summer, while 89 species were identified during the winter; most species belongs to the order of Calanoida. It was noted by the study that most species appeared in two seasons together, while some species appeared in the season without the other. It was also noted that the abundance of Copepoda was higher in summer with an average of (5314 individual / m 3), while the average in winter was (4353, 40 individual / m 3). It was clear from the study that the station near the beach was less diverse and more prolific than the offshore station during the summer and winter together.