This research focused on determining the concentrations of lead (pb) and cadmium (cd) in two types of marine fish (mullet and exotic fish) and in the coastal waters of Lattakia city at the locations of almadinat alriyadia and alkurnish aljanubiuthe s
outhern Corniche, in addition to taking measurements of the hydrochemical factors of marine water (temperature, salinity, pH). Where the concentrations of the studied elements were determined using the atomic absorption spectrometer (Varian 220. Absorption) using flame and graphite techniques.
This study was carried out on /516/ fish individuals of Chub Mackerel Scomber
japonicus (Houttuyn, 1782), which were caught from the Coastal water of Latakia
province (Levantine basin) from December 2014 to November 2015, to identify the
evolution
stages of sexual maturity (by morphological and histological methods)
and determine the spawning period of this important economic species. The results
showed that Scomber japonicus begin with sexual maturity from the beginning of
February and extend until mid-May, with a single peak in Mars. The average value
of the gonado-somatic index (GSI) was (12.46 ± 1.52)% for males and (13.21 ± 3.9)% for
female in Mars. And the total body length at sexual maturity was (21.5) cm for
males, and was (23.5) cm for females. The development stages and gonad maturation
in this specie, are similar with regard to the tissue and the form of gonads and
according to the six gonad maturation steps.
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.
This study has been carried out on Saddled bream , from the
family of Sparidae, which was caught from the coastal waters of
Tartous province.
The results showed that, Saddled bream reached at the fifth stage
of sexual maturity during April and May for males and females,
and the study of the sexual maturity index GSI confirmed these
results.
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
tech
nique.
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.
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.
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 wi
th
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.
