Results 81 to 90 of about 3,834,989 (195)

Invasive Ponto-Caspian amphipods and fish increase the distribution range of the acanthocephalan Pomphorhynchus tereticollis in the river Rhine [PDF]

open access: yes, 2012
Non-indigenous species that become invasive are one of the main drivers of biodiversity loss worldwide. In various freshwater systems in Europe, populations of native amphipods and fish are progressively displaced by highly adaptive non-indigenous ...
Palm Harry W.   +13 more
core   +1 more source

Effect of age on reproductive performance in female Caspian brown trout (Salmo trutta caspious, Kessler 1877)

open access: yesCaspian Journal of Environmental Sciences, 2011
Caspian brown trout (Salmo trutta caspius) is one of the economically valuable species in the Caspian Sea. Artificial propagation and production of larvae are the main problems in the early culture of this species. The purpose of this paper is to study
Rahbar, M.   +6 more
doaj  

Ethnic culture of Guilan and role of the Caspian Sea in it - based on views of Russian travelers

open access: yesLingua mobilis, 2015
In this paper, based on a descriptive-analytical method, the researchers attempt to explore this matter with the help of Russian authors’ works. The purpose of this study is to examine the role and the degree of importance of Guilan in the travel accounts of Russian travelers who were concerned by the Russian government. Among the results of the study,
KOHANSAL H., PANAHI A., GOLANDAM A.
openaire   +1 more source

Ex situ study of Enterococcus faecalis survival in the recreational waters of the southern coast of the Caspian Sea

open access: yesIranian Journal of Microbiology, 2016
Background and objectives: The USEPA has suggested faecal enterococci as the primary bacterial indicators. Of more importance is their direct correlation with swimmer-associated gastroenteritis in recreation water quality monitoring. In contrast to other
Sahar Irankhah   +2 more
doaj  

The first occurrence of the Ponto-Caspian invader, Hemimysis anomala G.O. sars, 1907 (Mysidacea) in the UK [PDF]

open access: yes, 2008
An invasive Ponto-Caspian mysid, Hemimysis anomala G.O. Sars, 1907, was recorded in England for the first time in 2004. Usually a deep water species, in England H.
Harding, P   +2 more
core  

Enhancing Cultural Competence through University-Business Collaboration: The Case of the Caspian Region

open access: yesEurasian Journal of Economic and Business Studies
The accelerating pace of globalization and digital transformation presents significant challenges and opportunities for higher education institutions, particularly in regions undergoing rapid economic and educational transformations such as the Caspian area.
openaire   +1 more source

Mesolithic Monuments of the Western Kazakhstan

open access: yesOriental Studies, 2018
The article investigates Mesolithic monuments in Western Kazakhstan. A mesolithic monument Ustyurt is represented by the monuments of Aydabolskaya group: Aydabol 6-7, 9-12, 14-16, 20-23, 25; Aktaylak 1 (layer 1), Aktobe 2, Tchuruk 2 (layers 1 and 2 ...
E. Klyshev, P. Koltsov
doaj  

The possibility of VNN occurrence and the effects of nervous necrosis virus (NNV) on immunological and histopathological changes in Caspian Sea salmon (Salmo trutta caspius) fingerlings fed by Chlorella vulgaris [PDF]

open access: yesبوم‌شناسی آبزیان, 2017
This study evaluated the possibility of VNN occurrence and the effects of Chlorella vulgaris on immune parameters before and after exposure to Viral Nervous Necrosis virus in Caspian Sea salmon (Salmo trutta caspius).
Hossein Emadi   +4 more
doaj  

Culturing Rutilus frisii kutum, a Fish Species of the Caspian Sea, to Marketable Size

open access: yes‬‭Majallah-i ̒Ilmī-i Shīlāt-i Īrān, 1997
Rutilus frisii kutum, belonging to family Cyprinidae, was reared using mono-culture and poly-culture (combined with Chinese carps) methods. The culturing process were carried out in earthen ponds from 22 May to 23 October in 1992 and 1993. Physical and chemical factors, transparency of the water, sanitary control and growth of the fishes were surveyed ...
openaire   +2 more sources

Feasibility study of white shrimp, Litopenaeus vannamei, culture in earthen ponds using brackish water of the Caspian Sea

open access: yes‬‭Majallah-i ̒Ilmī-i Shīlāt-i Īrān, 2016
Litopenaeus vannamei (Boone, 1931) post-larvae 12 were obtained from Bushehr province and reared at the Caspian Sea Ecological Research Iinstitute (Mazandaran, Iran) in summer 2012 using brackish water of the Caspian Sea. Prior to start of the experiment,
S.M.V. Farabi email ; A.A. Salehi; R. Pourgholam; M. Ghanei Tehrani
doaj  

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