Microplastic fibers in the gut of highly consumed fish species from the southern Caspian Sea

2021 ◽  
Vol 168 ◽  
pp. 112461
Author(s):  
Mohammad Javad Nematollahi ◽  
Behnam Keshavarzi ◽  
Farid Moore ◽  
Hamid Reza Esmaeili ◽  
Hassan Nasrollahzadeh Saravi ◽  
...  
Keyword(s):  
Fish Species ◽  
Caspian Sea ◽  
Southern Caspian Sea

scholarly journals Length-weight relationship and condition factor of three endemic fish species, Ponticola bathybius, Neogobius caspius and N. pallasi (Perciformes: Gobiidae) from the Southern Caspian Sea basin, Iran

2021 ◽  
Vol 38 (4) ◽  
pp. 523-525
Author(s):  
Nasrin Nikmehr ◽  
Soheil Eagderi ◽  
Hadi Poorbagher ◽  
Keyvan Abbasi
Keyword(s):  
Fish Species ◽  
Caspian Sea ◽  
Condition Factor ◽  
Biological Information ◽  
Biological Research ◽  
The Caspian Sea ◽  
Baseline Information ◽  
Endemic Fish ◽  
First Time ◽  
Southern Caspian Sea

In this study, the length-weight relationships (LWRs) and condition factors were estimated for 445 specimens belonging to three gobiid species viz. Ponticola bathybius (Kessler, 1877), Neogobius caspius (Eichwald, 1831) and Neogobius pallasi (Berg, 1916) from the Southern Caspian Sea basin. Total length and total weight of the examined specimens ranged 4.9-28.3 cm and 0.64-263.4 g, respectively. The length-weight parameter b of the studied species found between 2.47 (N. caspius) and 3.45 (N. pallasi) with r2 ranging 0.831 to 0.988. LWR and K parameters are reported first time for N. pallasi from the Caspian Sea basin. The condition factor estimated was calculated from 0.94 (N. pallasi) to 0.98 (N. caspius) and 1.00 (P. bathybius). The basic biological information on the LWRs of these three gobies will be useful as baseline information for further biological research in the region.

Organochlorine pesticides in two fish species from the southern Caspian Sea

2018 ◽  
Vol 133 ◽  
pp. 289-293 ◽  
Author(s):  
Parisa Nejatkhah Manavi ◽  
Eftekhar Shirvani Mahdavi ◽  
Asit Mazumder
Keyword(s):  
Organochlorine Pesticides ◽  
Fish Species ◽  
Caspian Sea ◽  
Southern Caspian Sea

THE NUMBER AND QUALITATIVE CHARACTERISTICS OF FRY FISH IN SHALLOW COASTAL WATERS OF THE VOLGA IN THE SUMMER-AUTUMN PERIOD OF 2012

2017 ◽  
pp. 65-73
Author(s):  
Edward Vladimirovich Nikitin
Keyword(s):  
Fish Species ◽  
Coastal Waters ◽  
Caspian Sea ◽  
The Caspian Sea ◽  
Volga River ◽  
Commercial Fish ◽  
Autumn Period ◽  
Fish Juveniles ◽  
Qualitative Characteristics ◽  
Shallow Coastal Waters

Shallow coastal waters of the Volga river is a flooded feeding area for fish juveniles of nonmigratory fish species. There takes place annual downstream migration of fluvial anadromous fish species from spawning grounds of the Volga river to the Northern Caspian Sea. The most important factors determining the number and qualitative characteristics of fry fishes are the level of the Caspian Sea (currently having a tendency to the lowering), hydrological and thermal regimes of the Volga river. Researches were carried out in definite periods of time. In the summer-autumn period of 2012 fry fishes were presented by 19 species (13 of them were commercial species), which belonged to 9 families. The article gives data on all the commercial fish species. In the first decade of July the maximum number of fry fish was registered in the western part of the Volga outfall offshore - in box 247 (19.86 mln specimens/km2), in the eastern part - in box 142 (20.4 mln specimens/km2). The most populous were roach, red-eye, silver bream and bream; size-weight characteristics were better in the areas remoted from the Volga delta. In the third decade of July the quantitative indicators of fry fish on these areas decreased, size-weight characteristics greatly increased. In the second decade of October in the western part of the seaside there were registered increased pre-wintering concentrations of fish juveniles, their qualitative indicators increased, which is evidence to favorable feeding conditions in 2012.

A new fish based multi-metric assessment index for cold-water streams of the southern Caspian Sea Basin in Iran

2019 ◽  
Vol 102 (4) ◽  
pp. 645-662
Author(s):  
Hossein Mostafavi ◽  
Azad Teimori ◽  
Rafaela Schinegger ◽  
Stefan Schmutz
Keyword(s):  
Caspian Sea ◽  
Cold Water ◽  
Assessment Index ◽  
Southern Caspian Sea

X. Growing Tension and the Threat of War in the Southern Caspian Sea: The Unsettled Division Dispute and Regional Rivalry

2003 ◽  
Vol 2 (3) ◽  
pp. 575-591
Author(s):  
Hooman Peimani
Keyword(s):  
Caspian Sea ◽  
The United States ◽  
Caspian Region ◽  
Legal Regime ◽  
The Caspian Sea ◽  
Military Conflict ◽  
American Military ◽  
Military Presence ◽  
Military Conflicts ◽  
Southern Caspian Sea

AbstractThe absence of an acceptable legal regime for the division of the Caspian Sea among its five littoral states has created grounds for conflicts, crises, and wars in the Caspian region, a situation worsened since 2001 when Iran, Azerbaijan, and Turkmenistan found each other on a collision course over the ownership of certain offshore oilfields. The region has since been heading towards militarization, while the persistence of conflicts over the Caspian Sea's division has prepared the ground for military conflicts. Fear of lagging behind in an arms and the manipulation of conflicts by the United States and Turkey have further encouraged militarization. Against this background, certain factors, including Turkey's efforts to deny Iran political and economic gains in the Caspian region, the growing American military presence in Eurasia, and the expanding American-Azeri military ties since 11 September 2001 will likely contribute to the creation of a suitable ground for a military conflict in the Caspian region.

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