نتایج جستجو برای: the caspian sea region

تعداد نتایج: 16105121  

Journal: :Journal of fish biology 2012
I Hashemzadeh Segherloo H Farahmand A Abdoli L Bernatchez C R Primmer A Swatdipong M Karami B Khalili

Interrelationships, origin and phylogenetic affinities of brown trout Salmo trutta populations from the southern Caspian Sea basin, Orumieh and Namak Lake basins in Iran were analysed from complete mtDNA control region sequences, 12 microsatellite loci and morphological characters. Among 129 specimens from six populations, seven haplotypes were observed. Based on mtDNA haplotype data, the Orumi...

2009
Elena Kvitsinskaia

* The author is employed at the United Nations Environment Programme’s Regional Office for Europe. The paper is presented by the author in her personal capacity, however, and opinions expressed in this paper should be attributed to the author. They are not meant to represent the positions or opinions of UNEP or the State Parties to the Framework Convention on the Protection of the Marine Enviro...

Journal: :تحقیقات جغرافیایی 0
جواد خوشحال دانشگاه اصفهان جواد خوشحال دانشگاه اصفهان عبدالعظیم قانقرمه دانشگاه اصفهان

â â â  aside from its annual and seasonal fluctuation, caspian sea level has sudden change with hourly and daily continuity caused by atmosphere circulation patterns. sometimes these fluctuations are so intense that they make irreparable damage to the economical and social activities in the coastal sea areas. the aim of this study is synoptic recognition of factors causing storm levels in the s...

2014
Richard HECKMANN Ali HALAJIAN Atif EL-NAGGAR Wilmien LUUS-POWELL

BACKGROUND Main objective of this study was to investigate the invasive activity of the liver fluke, Pseudamphistomom truncatum against the Caspian seal (Pusa caspica) and was exemplified at the gross, light microscopy (LM) and electron microscopy (EM) levels. METHODS The study was done on a freshly dead Caspian Seal in the southern coast of Caspian Sea. The checked Caspian seal probably bein...

2001
Melania E. A. Cristescu Paul D. N. Hebert Jonathan D. S. Witt Hugh J. MacIsaac Igor A. Grigorovich

The predatory cladoceran Cercopagis pengoi has extended its range over the past decade from the Ponto-Caspian basin into the Baltic Sea and the Laurentian Great Lakes. This study employs mitochondrial DNA (mtDNA) sequence analysis to elucidate the invasion corridors exploited during this range expansion. The Caspian and Black Sea populations of C. pengoi exhibit marked genetic divergence, enabl...

ژورنال: بوم شناسی آبزیان 2012
Ghodrati Shojaei, Mehdi , Noori Dafrazi, Reza , Taheri Mirghaed, Ali , Sourinejad, Iman , Taghavi Motlagh, Seyyed Amin ,

The simple linear model and catch data from Caspian Sea during a decade were used to assess the state of the fishery in this region. Also fishery trends were analysed to determine the catch fluctuation during the period. Fishing potential of the species for the following year was predicted. Catch trend analyses of bony fishes showed incremental or decreasing patterns for different species. Howe...

Journal: :E3S web of conferences 2021

Information obtained as a result of monitoring water bodies is taken basis for legal regulation economic activities related to environmental pollution. In the context globalized economy, strengthening protection measures in one neighboring countries often leads fact that next plant will be built across border, and its impact on environment global scale same. this study, authors studied problem ...

D.O.F. Skibinski, S. Rezvani Gilkolaei,

A partial sequence of the mtDNA ND5 gene region was used for population study in Persian sturgeon (west and east areas of southern Caspian Sea). The result showed that although this approach was informative for phylogenetic study in sturgeon, it was less informative for population study in Persian sturgeon. 

L. Azizzadeh Pormehr M. Khoshkholgh M. Pourkazemi S. Nazari

The Persian sturgeon, Acipenser persicus (Borodin, 1897), is an economically important species, which mainly inhabits the Caspian Sea. However, little is known about its population genetic structure. In this study, variation in nucleotide sequences of the mitochondrial DNA (mtDNA) control region of wild stock Persian sturgeon was determined to assess the genetic diversity among different natura...

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