Results 31 to 40 of about 30,791 (345)

Integrating local ecological knowledge, ecological monitoring, and computer simulation to evaluate conservation outcomes

open access: yesConservation Letters, Volume 15, Issue 6, November/December 2022., 2022
Abstract Successful conservation of long‐lived species requires reliable understanding of long‐term trends and historical baselines. We present a framework for evaluating abundance trends and conservation outcomes for long‐lived marine species by integrating local ecological knowledge (LEK), ecological monitoring, and computer simulation, tested on a ...
Michelle María Early‐Capistrán   +6 more
wiley   +1 more source

STURGEON DISEASES IN AQUACULTURE [PDF]

open access: yesArchives of Veterinary Medicine, 2019
Sturgeon aquaculture is economically important in many countries, for both meat and caviar production. Sturgeon is the common name for 27 species of fish belonging to the family Acipenseridae. Among them, only the sterlet (Acipenser ruthenus) and the Siberian sturgeon (Acipenser baerii) completes the lifecycle in fresh water. In Serbia, in the last few
Radosavljević, Vladimir   +7 more
openaire   +3 more sources

Ontogenetic development of pallid sturgeon (Scaphirhynchus albus) and shovelnose sturgeon (Scaphirhynchus platorynchus) from hatch through yolk absorption

open access: yesEcology of Freshwater Fish, Volume 32, Issue 1, Page 209-231, January 2023., 2023
Abstract Sturgeons have a complex free‐embryo period extending from hatch to the initiation of exogenous feeding. Although available for some sturgeon species of the genus Acipenser, descriptions of the developmental stages of free embryos of the genus Scaphirhynchus are lacking.
Kimberly A. Chojnacki   +4 more
wiley   +1 more source

Comparison of Metabolic Rates of Young of the Year Beluga (Huso huso), Sterlet (Acipenser ruthenus) and Bester Hybrid Reared in a Recirculating Aquaculture System

open access: yesFishes, 2021
In the present study, oxygen consumption of two sturgeon species, beluga (Huso huso), sterlet (Acipenser ruthenus), and their hybrid reared in a recirculating aquaculture system were compared over body intervals from 54–107 g to determine the ...
Mirela Crețu   +3 more
doaj   +1 more source

Toxic effects of PCB126 and TCDD on shortnose sturgeon and Atlantic sturgeon [PDF]

open access: yesEnvironmental Toxicology and Chemistry, 2012
Abstract Exposure to chemical contaminants is often invoked to explain recruitment failures to populations of sturgeon worldwide, but there is little empirical evidence to support the idea that young sturgeon are sensitive at environmentally relevant concentrations. The authors used shortnose sturgeon (Acipenser brevirostum) and Atlantic
E. A. Habeck   +4 more
openaire   +3 more sources

Conservation Status and Effectiveness of the National and International Policies for the Protection and Conservation of Sturgeons in the Danube River and Black Sea Basin

open access: yesDiversity, 2023
Rivers and their watersheds have been subject to various changes, including biodiversity, caused by anthropogenic activities. The Danube River and Black Sea basin overlap the geographic range of six species of anadromous fish belonging to the family ...
Daniela Strat   +1 more
doaj   +1 more source

Modern problems of artificial reproduction of sturgeon in the Volga‐Caspian basin

open access: yesЮг России: экология, развитие, 2022
Aim. The aim of the study is to analyze the current state of artificial reproduction of the Caspian sturgeon and to identify the problems of reducing efficiency and ways to solve them.Discussion.
L. M. Vasilyeva, N. I. Rabazanov
doaj   +1 more source

Molecular cytogenetic differentiation of paralogs of Hox paralogs in duplicated and re-diploidized genome of the North American paddlefish (Polyodon spathula). [PDF]

open access: yes, 2017
BackgroundAcipenseriformes is a basal lineage of ray-finned fishes and comprise 27 extant species of sturgeons and paddlefishes. They are characterized by several specific genomic features as broad ploidy variation, high chromosome numbers, presence of ...
Amemiya, Chris T   +7 more
core   +4 more sources

Factors affecting the catch and harvest rates of paddlefish downstream of Gavins Point Dam, South Dakota, 2000–2020

open access: yesFisheries Management and Ecology, Volume 30, Issue 1, Page 11-23, February 2023., 2023
Abstract Paddlefish, Polyodon spathula (Walbaum), provide an important snagging and bowfishing fishery below Gavins Point Dam in South Dakota. During 2009–2020, snagging catch rates of paddlefish decreased below Gavins Point Dam to presumed “normal” lower pre‐2004 levels, while bowfishing catch (harvest) rates significantly increased during 2000–2020 ...
William J. Radigan   +3 more
wiley   +1 more source

Evolutionary relations and population differentiation of Acipenser gueldenstaedtii Brandt, Acipenser persicus Borodin, and Acipenser baerii Brandt [version 1; referees: 2 approved]

open access: yesF1000Research, 2016
Russian (Acipenser gueldenstaedtii), Persian (A. persicus) and Siberian (A. baerii) sturgeons are closely related ‘Ponto-Caspian’ species. Investigation of their population structure is an important problem, the solution of which determines measures for ...
Alexey Sergeev
doaj   +1 more source

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