Results 71 to 80 of about 1,278 (194)

Environmental DNA reveals the ecology and seasonal migration of a rare sturgeon species in the Ural River

open access: yesEnvironmental DNA, Volume 6, Issue 2, March–April 2024.
Environmental DNA technology has been used to identify rare sturgeons in the Ural River. The study found sturgeons at all sites in spring and autumn, confirming their semi‐anadromous ecology. This is the first documented eDNA detection of sturgeon specimens in the Ural River.
Gulmira Abileva   +4 more
wiley   +1 more source

Characterization of growth and biochemical composition of sterlet, Acipenser ruthenus L., juveniles from the Dniester population reared in RAS

open access: yesArchives of Polish Fisheries, 2014
A broodstock was created with individuals from the diminishing natural sterlet, Acipenser ruthenus L., population in the upper area of the Dniester basin. Selects and spawners were reared in flow-through tanks with natural thermal regimes.
Khudyi Oleksy   +4 more
doaj   +1 more source

Effects of 11-Ketotestosterone on Development of the Previtellogenic Ovary in the Sterlet, Acipenser ruthenus

open access: yesFrontiers in Endocrinology, 2020
11-ketotestosterone (11-KT) is a non-aromatizable and the most potent androgen in a few teleost. It has been reported that 11-KT in serum had a high concentration and increased sharply before the period of yolk deposition in females of few fishes.
Wei Wang   +8 more
doaj   +1 more source

Food availability influences angling vulnerability in muskellunge

open access: yesFisheries Management and Ecology, Volume 31, Issue 1, February 2024.
Abstract Reduced food availability increases the capture of several fish species, although the mechanisms responsible for how food resources result in increased capture are undefined. Our objective was to quantify the mechanism by which food availability might influence the angling vulnerability of muskellunge (Esox masquinongy).
John F. Bieber   +2 more
wiley   +1 more source

On the genetic structure of brood groups of the sterlet (Acipenser ruthenus Linnaеus) in industrial aquaculture

open access: yesRibogospodarsʹka Nauka Ukraïni, 2019
Purpose. To investigate the genetic structure of the brood stock of the sterlet formed in the conditions of floating cages of an industrial type farm. Methodology.
M. Pashko   +3 more
doaj   +1 more source

Genotoxic effects in blood cells of sturger (Acipenseridae) grown in conditions of cage farming of the Volga delta, Russia

open access: yesЮг России: экология, развитие
The purpose of this work was to assess the degree of genotoxic influence of the habitat on individuals of Russian sturgeon and sterlet raised in cage farming conditions in the Volga delta, using micronucleus and DNA comet tests.The blood of the ...
A. V. Konkova   +3 more
doaj   +1 more source

Selected coelomic fluid parameters of sterlet, Acipenser ruthenus L.: effects of light color and photoperiod

open access: yesArchives of Polish Fisheries, 2014
Light and color have effect physiological aspects of fish such as growth, the neuro-hormonal system, and reproduction. In the present study, the effects of light color and photoperiod on the levels of selected parameters of coelomic fluid (glucose, total
Azarin Hajar   +2 more
doaj   +1 more source

Results of the experiments on artificial production of ovulated eggs from brood sterlet Acipenser ruthenus (Linnaeus) at non-traditional terms

open access: yesRibogospodarsʹka Nauka Ukraïni, 2018
Purpose. To study the peculiarities of the artificial production of ovulated eggs from brood sterlet at non-traditional terms and to determine major productive parameters in experimental fish groups. Methodology.
M. Pashko, O. Tretiak, O. Kolos
doaj   +1 more source

Morphological development and body shape change of Sterlet (Acipenser ruthenus) using geometric morphometric technique during early development [PDF]

open access: yesتغذیه آبزیان, 2016
This research was conducted to study the morphological development and body shape changes of the Sterlet (Acipenser ruthenus) using geometric morphometric technique during early development from hatching up to 50 days post-hatch (dph).
doaj   +1 more source

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