Volume 29, Issue 1, 2014
Isolation and identification of Edwardsiellatardafrom the middle intestine of the(Asian catfish)Silurustriostegus(Heckel,1843)
A.J. Mansoer, S.Sh. Mahdi, Sh.J. Raesan
Mesopotamian Journal of Marine Science, 2014, Volume 29, Issue 1, Pages 1-4
The present study represent a first record of the bacterium Edwardsiellatarda, Enterobacteriaceafrom the middle intestine of the Asian catfish, Silurustriostegus on native studies in Iraq.Twenty five fish were collected during December 2006 from the Garmat Ali River, Basrah City, using seine nets. Sampled fish ranged between 350-750g and250-650 mm. Tenisolates of were bacteriaEdwardsiellatardait is belong to.
Characteristics of sub-bottom profile acquired in Shatt Al-Arab River, Basrah-Iraq
Mesopotamian Journal of Marine Science, 2014, Volume 29, Issue 1, Pages 5-12
A single sub bottom profile, nearly 1.0 km long, was acquired in Shatt Al-Arab River, at the river’s portion next to the downtown of Basrah city, 2010. The profile characterized by predominant ripple-marked features. Beneath the bottom, signal penetration was relatively low attributed to the existence of thick layer identified in the sub-bottom and interpreted as the main load bearing layer in the area. Riverbed multiple showed a strong presence and occupied the profile’s bottom. Interpretation beyond the riverbed multiple was not possible. Water bottom was flat, except for a buried object of undetermined type lying within the sediments of the bottom.
Nutritional value of important commercial fish from Iraqi waters.
A.A. Hantoush, Q.H. Al-Hamadany, A.S. Al-Hassoon, H.J. Al-Ibadi
Mesopotamian Journal of Marine Science, 2014, Volume 29, Issue 1, Pages 13-22
Knowledge of the proximate chemical composition (protein, fat, moisture and ash) of fish species can be used to determine their nutritional value and to plan the industrial and commercial processing. Ten species of fish from marine and fresh waters of Iraq were studied. In marine and freshwater fish species, the highest level of moisture content was observed in Ilisha megaloptera (79.04 %) and Cyprinus carpio (78.51 %), and the lowest was observed in Chirocentrus dorab (73.74 %) and Liza abu (71.23 %). The lipid contents in the muscles of marine fish species ranged from 1.28 % in Ilisha megaloptera to 4.63 % in Cynoglossus bilineatus, while in freshwater fish species ranged from 3.16 % in Cyprinus carpio to 6.03 % in Liza abu. The highest protein values in the marine and freshwater fish species were recorded in Chirocentrus dorab (18.61 %) and Liza abu (19.15 %), and the lower values were in Cynoglossus bilineatus (11.77 %) and Cyprinus carpio (14.74 %). The percentage of ash content in the marine and freshwater fish species was highest in Cynoglossus bilineatus (4.24 %) and Liza abu (3.25 %), and lowest in Ilisha megaloptera (1.25 %) and Barbus xanthopterus (1.28 %). The results showed that the proximate composition of the fish varied significantly among the various fish species. The results revealed that moisture content was high when lipid was low indicating a significant inverse relationship between the two components (r = - 0.711).
Heavy metal concentrations in the bivalve Corbicula fluminalis shells from Shatt Al-Arab River
Mesopotamian Journal of Marine Science, 2014, Volume 29, Issue 1, Pages 23-28
This study was to investigate the contamination in the Shatt Al-Arab River by determining the heavy metals in the limnic bivalve Corbicula fluminalis, a sentinel species. The results showed that the values of Ba, Zn, Pb, Ni, Co, Cr, Sr, Cu, Mn and Fe in Corbicula fluminalis shells increased significantly from the beginning point toward the central part of Shatt Al-Arab River. This increase may be explained from the high incidence of pollution from sewage, development, and industry in the central part of Shatt Al-Arab River compared to the northern parts.
Study of soil erosion risk in the basin of Northern Al-Kabeer river at Lattakia-Syria using remote sensing andGIS techniques
M. Barakat, I. Mahfoud, A.A. Kwyes
Mesopotamian Journal of Marine Science, 2014, Volume 29, Issue 1, Pages 29-44
Soil erosion is the most importantchallenge foragriculturepresently onthe Syrian coast, especially in areas close to rivers and lakes.This study is to produce a soil erosion risk map based on the COoRdination of Information on the Environment (CORINE) model for the Northern Al-Kabeer River, Lattakia Province.To achieve this objective, the first phase of the study evaluated the soil erosion potential, by estimating soil texture, soil depth and granulometry. Soil was classified according to its erosion potential. A soil erosion potential map was obtained from data on soil erodibility, erosivity and slope.A land cover map of the study area was produced and classified into two classes according to soil protection. A risk map of soil erosion was prepared from information on land cover and potential risk erosion classes obtained previously.The results showed that 2.47% of the study area is in high risk soil erosion areas, 22.18% in moderate risk areas, and 75.35% in low risk areas. The high risk erosion areas were mainly located in the center and northern location within the study area. This study also confirms that land cover is the highest determinant of soil erosion.Land cover accounted for 60.93% of the erosion risk.
First record of the Nile tilapia Oreochromis niloticus (Linnaeus, 1758), from the Shatt Al-Arab River, Southern Iraq
A.J. Al-Faisal, F.M. Mutlak
Mesopotamian Journal of Marine Science, 2014, Volume 29, Issue 1, Pages 45-50
The exotic cichlid Oreochromis niloticus (Linnaeus, 1758) was first recorded from the Shatt Al-Arab River, at Basrah (Abu-al-Khasib), Iraq. This species was the third cichlid recorded in Iraq. O. aureus and Tilapia zillii have also been recorded for the region. Samples were collected by gill nets during November 2013 and April 2014. Specimens ranged from 192 to 292 mm total length and from 136.5 to 500.06 g. in weight. The Nile tilapia is characterized by having regular dark vertical stripes on the caudal fin, dorsal fin with 17-18 spines, 35-40 lateral line scales and 28-31gill rakers.
Diversity and seasonal changes of zooplankton communities in the Shatt Al-Arab River, Basrah, Iraq, with a special reference to Cladocera
M.F. Abbas, S.D. Salman, S.H. Al-Mayahy
Mesopotamian Journal of Marine Science, 2014, Volume 29, Issue 1, Pages 51-70
Zooplankton abundance and distribution were studied at four stations in the northern sector of Shatt Al-Arab from September 2008 to August 2009. Monthly zooplankton samples were collected.Oblique hauls were taken at each stationusing a 0.120 mm mesh-sized net with 40 cm mouth opening. Air and water temperatures, salinity, pH, dissolved oxygen, turbidity, chlorophyll-a, total suspended solids and total soluble solids were measured at each station and at each sampling event and were correlated with the density of Cladocera. Like Shannon index, Jaccardʼs similarity index,measures of richness and evenness were calculated. Water temperature ranged from 10 to 28 ºC. Salinity values changed from 0.7 to 4.1 psu with a decline in the summer and an increase in the autumn. pH values were >7, dissolved oxygen varied from 4.9 in the summer to 12.3 mg/l in the winter. Chlorophyll-a values fluctuated between 2.3 in the autumn and winter and 21.4 mg/m3 in Summer.Zooplankton density was the least at station 1 (79-10074 ind/m3) and the most at station 2 (174-65170 ind/m3).Cirripede larvae dominated the zooplankton community at all the stations. Cladocera was second in number, followed by Copepoda.The maximum diversity index (2.11), richness (64.45) and evenness (0.47) were obtained at station 1. The highest similarity was obtained between stations 3 and 4 and the lowest between stations 1 and 2.
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