a total of 76 specimens of three fish species including: hemiculter lucisculus (41), liza auratus (16) and gasterosteus aculeutus (19) were caught using handnet from 3 station in zardi river in the south-eastern costal of caspian sea at autumn and winter 2009 and spring 2010. the fishes were transported alive to the laboratory of shahid rajaee site. they were killed by cutting their spinal cord...

The article considers the original results of observations and analysis catches atherina (Atherina boyeri caspia (Eichwald)) by months stationary nets in Terek-Caspian fishery subarea (Republic Dagestan). size-weight age indicators spawning stocks have been characterized. For first time recent years conditions for western part Middle Northern Caspian are described. All biostatistical obtained (...

 Mahisefid, Rutilus frisii kutum , is a cyprinid fish which is distributed from Turkmenistan to Azerbaijan along the Caspian Sea. It is one of the economically important fish in the region. As part of the Iranian Fisheries Company’s policy to improve the stocks of this species, every year, fingerling of Mahisefid are released into the southern basin of the Caspian Sea. The main objective of thi...

background: protozoa are common in poultry and otherbirds and can cause mild to severe disease. objectives: thisstudy was concerned with the prevalence of parasitic protozoa inwild waterfowl in caspian sea lagoons in the north of iran.methods:atotal of 293 waterfowl belonging to various generaincluding tadorna tadorna (common shelduck),aythya fuligula(tufted duck), aythya ferina (common puchard...

marine environment of the caspian sea, due to extensive human exploitation and discharge of large magnitudes of urban, industrial and agricultural waste, is under extensive pressure. nutrients such as phosphate and nitrate, and other human wastes are introduced into the caspian sea by river inflows and by direct waste dumping threatening marine life and eco system of the sea. high concentration...

Gill chloride cells and prolactin hormone are of high importance in the adaptation of euryhaline fish. Guldenstati (Chalcalburnus chalcoides, 1772), an adromous fish, migrates from the Caspian Sea to rivers to have a more successful reproduction. The present study was aimed to evaluate the changes in the number and size of C. chalcoides gill chloride cells as well as to determine the relationsh...

caspian sea had been used a long time between iran and the soviet :union: based on agreements of 1920 and 1940, without international importance. after the soviet’s collapse and with increasing the countries of sea border from two to five, this lake was important due to geopolitical and geo-economical conditions. following these situations, the legal regime of caspian sea needed to be revised. ...

 Mahisefid, Rutilus frisii kutum , is a cyprinid fish which is distributed from Turkmenistan to Azerbaijan along the Caspian Sea. It is one of the economically important fish in the region. As part of the Iranian Fisheries Company’s policy to improve the stocks of this species, every year, fingerling of Mahisefid are released into the southern basin of the Caspian Sea. The main objective of thi...

in this study, levels of cadmium, lead, arsenic and mercury heavy metals, which are required by the who and the unfao to be determined in sea food, were evaluated using flame atomic absorption spectroscopy technique, in tissues of two commonly consumed fish in iran namely rutilus frisii kutum and cyprinus carpio collected from the south coastline of the caspian sea. the average concentration of...