نتایج جستجو برای: the caspian sea region

تعداد نتایج: 16105121  

The Caspian kutum, Rutilus kutum Kamenskii, 1901 from Cyprinidae family is native in the Caspian Sea, with the highest distribution in the southern part and rarely seen in the northern and is an economically important species along the Caspian Sea. Despite this, knowledge about stock structure is scarce and there is no formal management strategy to ensure the long-term sustainability of this va...

The genus Cyrtopodion is the most widely distributed of the four gekkonid genera of the angular-toed geckos that inhabit Pakistan and the contiguous Palearctic Region (Szczerbak & Golubev 1996), from the Indus Valley to the eastern borders of the Caspian Sea. Longitudinal rows of trihedral tubercles characteristically line the dorsum of these angular-toed geckos. They primarily inhabit arid bad...

Journal: :iranian journal of ichthyology 0
mohammad reza noei institute of zoology, the azerbaijan national academy of sciences, baku, azerbaijan. shaig ibrahimov institute of zoology, the azerbaijan national academy of sciences, baku, azerbaijan. masoud sattari department of fisheries, faculty of natural resources, guilan university, somaeh sara campus, guilan, iran.

although the persian sturgeon, acipenser persicus , is a commercially valuable sturgeon species of the caspian sea, but there are only few reports about its parasite fauna in the southern part of the caspian sea. in this study, a total of 209 individuals of persian sturgeon were collected from two regions in the southwestern of caspian sea (guilan province, iran) from march 2009 to may 2011. af...

Journal: :journal of agricultural science and technology 2010
m. barzegar b. jalali

this paper presents a total of 11 known crustacean parasite species from 51 host species belonging to 7 families, with 17 genera reported from cultured and wild fishes in three faunal regions of iran. among them, one belonging to branchiura order, namely argulus foliaceus, was found on capoeta capoeta in makoo reservoir as well as on cyprinus carpio, chalcalburnus sp., hypophthalmichthys molitr...

Siamak Jamshidi,

Caspian Sea with an average depth of 27m is the largest enclosed water body in the world. Despite its enormity and valuable biotic and economic resources, investigations on the biota and seawater properties are mosaic at best. In previous studies, the monitoring of the chlorophyll-a concentrations in the Southern Caspian Sea was organized based on satellite data sets however, vertical dis...

ژورنال: مهندسی دریا 2016

Caspian Sea is one of the most low-lying areas of the region which is located between latitudes 36.34 and 47.13 degrees north. Its considerable vast area and depth have provided an opportunity to gain renewable energy by different methods. This paper analyzes the performance and mechanism of a floating wave energy converter known as WaveStar, in the above-mentioned sea. Different parts of mecha...

زکریایی, مریم, سعیدی, علی اصغر, صفاتیان, شهلا, عادل, میلاد, نصرالله زاده ساروی, حسن,

Background and purpose: North cities in the southern Caspian Sea, especially Mazandaran and swimming beache is constantly exposed to microbial contamination that can be dangerous for swimmers and tourists health. The present study aimed to evaluate the microbial contamination of swimming water in the Caspian shores of Mazandaran province. Materials and methods: For reviewing the microbiologica...

Journal: :molecular biology research communications 2013
hamed kolangi-miandare ghasem askari davoud fadakar mostafa aghilnegad siti azizah

the black-striped pipefish, syngnathus abaster, is a species of the syngnathidae family. this study provides data on the morphometric, meristic and genetic structuring of the caspian sea pipefish, syngnathus abaster. eight morphometric characteristics based on total length and five morphometric characteristics based on standard length were analyzed. a total of 50 specimens were collected in bra...

Journal: :ecopersia 2013
aboulghasem roohi reza pourgholam ali ganjian khenari ahmet kideys ameneh sajjadi

mnemiopsis leidyi population activities first were recorded during the coastal observations in 2001 in which its population considerably increased afterward and now sustained the southern caspian sea. maximum summer-autumn m. leidyi abundance was recorded in euphotic layer in 2002 (851±85 ind.m-3) and maximum biomass was in 2001 with 48.1±14.4 g.m-3) while minimum were in aphotic layer. in year...

Journal: :international journal of environmental research 0

in the present investigation flocculation of dissolved cu, zn, pb, ni and mn in a series of mixtures with salinities ranging from 1.5 to 9.5% during mixing of talar river water with the caspian sea water was studied. the flocculation trend of zn (87.22%) >mn (45.31%) >pb (39.09%) >cu (36.58%)>ni (12.70%) indicates that cu, zn, pb and mn have non-conservative behavior and ni has relatively conse...

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