+ Site Statistics
+ Resolve Accession
+ Subscribe to Site Feeds
EurekaMag Most Shared ContentMost Shared
EurekaMag PDF Full Text ContentPDF Full Text
+ PDF Full Text
Request PDF Full TextRequest PDF Full Text
Submit PDF Full TextSubmit PDF Full Text
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter
Follow on Google+Follow on Google+
Follow on LinkedInFollow on LinkedIn

+ Translate

Downstream migration of young sturgeons in the Ural River Biological bases of the fishing industry in Central Asian and Kazakhstan waters

, : Downstream migration of young sturgeons in the Ural River Biological bases of the fishing industry in Central Asian and Kazakhstan waters. Nauka Alma Ata : 49-51

In the lower reaches of the Ural River and on the spawning grounds, in 1961 and 1962, the following immature specimens were captured by means of an ichthyoplankton net and a fry net: 178 spiny sturgeon, 208 beluga sturgeon, 785 Russian sturgeon and 1697 sevriuga (stellate sturgeon). The downstream migration of sevriuga, Russian and spiny sturgeon started in the 3rd 10-day period of May; that of beluga, in the 2nd 10-day period of May. Sevriuga and spiny sturgeon remained in the river for overwintering (the latter for 1 year); Russian and beluga sturgeon descended to the sea in their 1st year of life. During the seaward migration the young fish aggregated in deep holes where the rich benthos promoted their growth.

(PDF 0-2 workdays service)

Order PDF Full Text


Click here to order any other PDF Full Text

Accession: 024513431

PDF Full Text: Submit

Submit PDF Full Text

No spam - Every submission is manually reviewed

Due to poor quality, we do not accept files from Researchgate

Submitted PDF Full Texts will always be free for everyone
(We only charge for PDFs that we need to acquire)

Select a PDF file:

Other references

Gaudin, R.D.puy, J.R.naivo, J., 1985: Porous ceramic cups, a tool to follow NH4+ and NO3- in solution in ricefield soils. I. Review article. Gronomie tropicale 40(1): 26-32

Wysoczanski Richard, 1989: Volcanology and petrology of the Iwikau Member, Whakapapa Formation, Mt. Ruapehu. Geological Society of New Zealand Miscellaneous Publication 43: 110

Gomez Puertas, P.; Valencia, A., 2003: Conference report ESF programme on integrated approaches for functional genomics workshop on modelling of molecular networks. Comparative & Functional Genomics 4(1): 144-147, February

Maas, B.; Goedeke, L.; Roloff, D.; Drees, N., 1974: Familial hemophagocytic reticulosis. A case report. Monatsschrift für Kinderheilkunde 122(4): 164-168

Li, P.; Xue, S-Yin.; Wang, S-Li.; Nan, Z-Ren., 2015: Pollution evaluation and health risk assessment of heavy metals from atmospheric deposition in Lanzhou. In order to evaluate the contamination and health risk of heavy metals from atmospheric deposition in Lanzhou, samples of atmospheric deposition were collected from 11 sampling sites respectively and their concentrations of heavy metals were deter...

Muirhead, E.E.; Byers, L.W.; Brooks, B.; Pitcock, J.A.; Brown, P.; Dowell, R., 1987: Selachyl alcohol as an oral antihypertensive agent: a preliminary note. Selachyl alcohol (SA) is a mono-oleyl glyceryl ether. It has certain biologic activities similar to those of the antihypertensive neutral renomedullary lipid (ANRL) derived from the renal papilla and its renomedullary interstitial cells (RIC). The...

Muraki R.; Baba T.; Iwasaki T.; Sata T.; Kurata T., 1992: Immunohistochemical study of skin lesions in herpes zoster. Thirty-seven biopsy skin tissues of herpes zoster taken from 27 patients were analysed immunohistochemically using two monoclonal antibodies detecting either nucleocapsid or glycoproteins of varicella-zoster virus (VZV) on paraffin sections of for...

Zmudzinski L., 1984: Pollution problems of the baltic sea. In 1970-1976 the degree of purity of the Baltic was assessed. Total fluvial influx of water-dissolved nutrients was estimated to amount to about 40 thousand tons P and 700 thousand tons N. Particular intensity of the sea eutrophication process was...

Karmanova, E. M., 1959: Biology of the nematode Hystrickis tricolor Dujardin, 1845, and some information on the epizootology of hystrichosis of ducks. Trudy Gelmintologicheskoi Laboratorii, 9: 113-125

Navarro, D.J.; Perfors, A.; Vong, W.Keen., 2014: Learning time-varying categories. Many kinds of objects and events in our world have a strongly time-dependent quality. However, most theories about concepts and categories either are insensitive to variation over time or treat it as a nuisance factor that produces irrational orde...