نتایج جستجو برای: caspian salmon

تعداد نتایج: 15460  

Journal: :Natural resources conservation and research 2023

The trends in the development of hydrocarbons Caspian shelf water area Russian Federation by domestic and foreign companies are analyzed. In accordance with these trends, national-political priorities for formation an oil gas chemical cluster national subjects zone Pre-Caspian substantiated.

2016
Alison C Harvey Gareth Juleff Gary R Carvalho Martin I Taylor Monica F Solberg Simon Creer Lise Dyrhovden Ivar-Helge Matre Kevin A Glover

The conditions encountered by Atlantic salmon, Salmo salar L., in aquaculture are markedly different from the natural environment. Typically, farmed salmon experience much higher densities than wild individuals, and may therefore have adapted to living in high densities. Previous studies have demonstrated that farmed salmon typically outgrow wild salmon by large ratios in the hatchery, but thes...

Journal: :Diseases of aquatic organisms 2007
Per Kania Thomas B Larsen Hans C Ingerslev Kurt Buchmann

Immune mechanisms in 2 strains of Salmo salar (Baltic salmon from River Ume Alv in Sweden and East Atlantic salmon from River Skjernå in Denmark) infected with the monogenean ectoparasite Gyrodactylus salaris were elucidated by molecular tools (real-time PCR). The gene expression in the fins (the preferred microhabitat of the parasite) of the susceptible but responding Swedish salmon was compar...

2007

The most important factor driving change in world salmon prices has been rapid and sustained growth in world farmed salmon and salmon trout production. This has fundamentally transformed world salmon markets—not only because of the dramatic growth in total supply, but also because of the changes that it has represented in the kinds of salmon products which are available, the timing of productio...

2009
Stefan Nehring

The Ponto-Caspian amphipod Obesogammarus obesus (Sars, 1894) was first recorded in the Rhine River near Koblenz, Germany in October 2004. Additional records of small numbers of O. obesus from the same location in 2005 and 2006 indicate that this alien species may have become established in the central section of the Rhine River. Ship transport via the Main-Danube Canal, connecting the Danube ba...

2012
M. Seifali A. Arshad H. R. Esmaeili B. H. Kiabi F. Yazdani Moghaddam N. Fardad

A total of 48 female spirlins Alburnoides sp. from the Kesselian stream (South Caspian Sea basin, northern Iran) were examined during a period from July 2008 to June 2009 to obtain data on fecundity, and to determine the spawning season of this carp. The mean absolute fecundity of females spirlin was 1722.92 (653.88) eggs. The fecundity has positive correlation with the size of the female. The...

Journal: :Diseases of aquatic organisms 2012
Trude M Lyngstad Anja B Kristoffersen Monika J Hjortaas Magnus Devold Vidar Aspehaug Rolf B Larssen Peder A Jansen

Infectious salmon anaemia (ISA) is a severe disease in farmed Atlantic salmon Salmo salar that has caused epidemic outbreaks in most salmon-producing countries worldwide. The disease is caused by virulent ISA virus (ISAV). Low virulent variants of the virus, characterised by a full-length sequence in the highly polymorphic region of segment 6 in the virus genome, have been reported with increas...

2010
Nathan J Mantua

-For much of the 20th century a clear north-south inverse production pattern for Pacific salmon had a time dynamic that closely followed that of the Pacific Decadal Oscillation (PDO), which is the dominant pattern of North Pacific sea surface temperature variability. Total Alaska salmon production was high during warm regimes of the PDO, and total Alaska salmon production was relatively low dur...

Journal: :Science 2004
Ronald A Hites Jeffery A Foran David O Carpenter M Coreen Hamilton Barbara A Knuth Steven J Schwager

The annual global production of farmed salmon has increased by a factor of 40 during the past two decades. Salmon from farms in northern Europe, North America, and Chile are now available widely year-round at relatively low prices. Salmon farms have been criticized for their ecological effects, but the potential human health risks of farmed salmon consumption have not been examined rigorously. ...

2003
SCOTT M. GENDE RICHARD T. EDWARDS MARY F. WILLSON MARK S. WIPFLI

almon runs in the Pacific Northwest have been declining for decades, so much so that many runs are threatened or endangered; others have been completely extirpated (Nehlsen et al. 1991). This “salmon crisis” looms large in the public eye, because it has serious and wideranging economic, cultural, and ecological repercussions. Billions of dollars have gone into industrial and agricultural projec...

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