EurekaMag.com logo
+ 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)

Accession: 024513431

Submit PDF Full Text: Here


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:
Close
Close

Related references

Islamgazieva, R.I.; Peseridi, N.E., 1966: Data on the development of the Ural River sturgeon fishery Biological bases of the fishing industry in Central Asian and Kazakhstan waters. The work was carried out in 1960-64 at the Kurile Sturgeon Station. Despite the fact that the rearing conditions at the station differ from natural ones, fairly good results were obtained with Beluga, Russian, spiny and stellate sturgeons. The bel...

Kiseleva, E.V., 1966: Two races of common marinka in the Zerav-shan River basin Biological bases of the fishing industry in Central Asian and Kazakhstan Waters. The living conditions and the changes in morphoecological features of the marinka, Schizothorax intermedius, from the upper and middle reaches of the Zeravshan were investigated. Two races were noted[long dash]mountain and lowland.

Peseridi, N.E., 1966: Some data on the reproduction of sturgeons and on their utilization of Ural River spawning grounds Biological bases of Central Asian and Kazakhstan fisheries. The extent of the spawning zone has been estimated at 800 km. The areas of the spawning beds depend on the water content of the river. Hiemal biological sturgeon groups spawn in the upper section the spawning zone, mainly on temporarily flooded ba...

Tugarina, P.Ya, 1966: On the ecology of the young of the principal commercial fishes of the Selegin shallows of Lake Baikal Biological bases of the fishing industry in Central Asian and Kazakhstan waters. The Lake Baikal Selegin shallows, where a rich food reserve is observed, serve as a foraging ground for the young of commercial fishes, particularly sturgeons, whitefishes, graylings and cyprinids.

Soloninova, L.N., 1966: On the abundance and life history of the young of spring-spawning fishes of the Bukhtarmin Reservoir Biological bases of the fishing industry in Central Asian and Kazakhstan waters. Observations are presented on the distribution, growth and percentages of the more abundant species in various parts of the reservoir according to data collected in 1964. The spawning conditions were favorable for pike, dace, ide, roach, perch and...

Pivnev, I.A., 1966: Biological diversity among intraspecific populations in certain Kirghizian and South Kazakhstan commercial fishes Biological bases of the fishing industry in Central Asian and Kazakhstan waters. Intraspecific variation was analyzed on the basis of 2 biological features: linear growth rate and individual absolute fecundity of Turkestan ide, Aral roach, Chu rudd, carp and common river perch. Carp in the Chu River basin was found to be repre...

Goryunova, A.I., 1966: Growth and maturation of carp under South Kazakhstan conditions Biological bases of the fishing industry in Central Asian and Kazakhstan Waters. Based on an analysis of body and gonad growth of carp from the Alma-Ata fish farm, it was shown that excessive feeding of carp with food concentrates strongly accelerated its growth but retarded its maturation, even at a high stocking density.

Kenzhalin, M.B., 1966: First results of the introduction of peled into lakes of the East-Kazakhstan region Biological bases of the fishing industry in Central Asian and Kazakhstan waters. Larvae of Coregonus peled were introduced into lakes Arasan and Shibyndykul. Fingerlings of age 5 months and 7 days attained a weight of 180 g. Average weight of 2-summer peled in Lake Shibyndykul was 1044 g. In Oct. the food of fingerlings was do...

Martekhov, P.F., 1966: Fishery management in inland waters Biological bases of the fishing industry in Central Asian and Kazakhstan waters. A method of lake-fisheries management has been worked out, similar to the 2- and 3- year method of pond-fish management. The main object of the fishery will be carp, also grass carp and either silver carp or peled; among predators asp, sheatfish a...

Kamilov, G.K., 1966: New data on the fish fauna composition of Uzbekistan waters Biological bases of the fishing industry in Central Asian and Kazakhstan waters. In Uzbekistan waters there are at present 68 spp. and ssp. of fish, belonging to 15 families. The distribution of both acclimated and accidentally imported fish in Uzbekistan waters is given. An increase of low-value and coarse fish was noted. All...