Results 31 to 40 of about 8,327 (188)

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   +2 more sources

Species which may act as vectors or reservoirs of diseases covered by the Animal Health Law: Listed pathogens of fish. [PDF]

open access: yesEFSA J, 2023
Abstract Vector or reservoir species of five fish diseases listed in the Animal Health Law were identified, based on evidence generated through an extensive literature review (ELR), to support a possible updating of Regulation (EU) 2018/1882. Fish species on or in which highly polymorphic region‐deleted infectious salmon anaemia virus (HPR∆ ISAV), Koi ...
EFSA Panel on Animal Health and Welfare (AHAW)   +36 more
europepmc   +2 more sources

Leiomyoma Causing Disease in a Wild Adriatic Sturgeon (Acipenser naccarii, Bonaparte, 1836). [PDF]

open access: yesJ Fish Dis
ABSTRACT The Adriatic sturgeon, Acipenser naccarii, is an endemic species to the Adriatic Sea basin classified as critically endangered according to the IUCN Red List. Limited information is available regarding the health status and diseases affecting this species, particularly in the wild.
Marsella A   +8 more
europepmc   +2 more sources

Intersex Gonad Differentiation in Cultured Russian (Acipenser gueldenstaedtii) and Siberian (Acipenser baerii) Sturgeon1

open access: yesBiology of Reproduction, 2014
Malgorzata Rzepkowska   +3 more
openaire   +3 more sources

Application of piezoactuators in the technology of low-temperature preservation of fish reproductive cells [PDF]

open access: yesE3S Web of Conferences, 2023
The sperm of Russian sturgeon (Acipenser gueldenstaedtii Brandt et Ratzeburg, 1833) was the research object. Acoustic-mechanical influence on sturgeon semen improves fish-biological and reproductive indices of the seminal fluid.
Ponomareva Elena   +6 more
doaj   +1 more source

The Preference of Anadromous Sturgeon Species Regarding Temperature and Depth Parameters During Spawning Migration in The Lower Danube [PDF]

open access: yesE3S Web of Conferences, 2023
Anadromous sturgeon populations in the Lower Danube are in severe decline, and this is due to a combination of anthropogenic and natural factors that have a major impact on the life cycle of the species.
Deák György   +5 more
doaj   +1 more source

EVOLUTION OF RUSSIAN STURGEON STOCKS (ACIPENSER GUELDENSTAEDTII) IN THE SOUTHERN CASPIAN SEA, IRAN

open access: yes‬‭Majallah-i ̒Ilmī-i Shīlāt-i Īrān, 2004
The changes of Russian sturgeon stocks in the southern Caspian Sea was studied by measuring and considering different population parameters such as fish length, weight and age and also fluctuation of catch and catch per unit effort.
M. Moghim
doaj   +3 more sources

Occurrence of exotic Russian sturgeons, Acipenser gueldenstaedtii Brandt et Ratzeburg, 1833 (Actinopterygii: Acipenseridae) in the Baltic Sea [PDF]

open access: yesActa Ichthyologica et Piscatoria, 2003
Exotic species of acipenserid fishes have been frequently encountered in the commercial catches of the Baltic Sea, since the early 1990s. Such sightings are rarely reflected as published records.
S. Keszka, T. Heese
doaj   +3 more sources

Detection of white sturgeon iridovirus (WSIV) in sturgeons (Actinopterygii: Acipenseriformes: Acipenseridae) from aquaculture facilities located in Poland, Germany, and Italy [PDF]

open access: yesActa Ichthyologica et Piscatoria, 2019
Background. White sturgeon iridovirus (WSIV) is one of the most serious threats for sturgeon aquaculture as the mortality in juvenile individuals can reach 95%.
P. Hofsoe-Oppermann   +3 more
doaj   +3 more sources

River Damming Impacts on Fish Habitat and Associated Conservation Measures

open access: yesReviews of Geophysics, Volume 61, Issue 4, December 2023., 2023
Abstract River damming has brought great benefits to flood mitigation, energy and food production, and will continue to play a significant role in global energy supply, particularly in Asia, Africa, and South America. However, dams have extensively altered global river dynamics, including riverine connectivity, hydrological, thermal, sediment and ...
Qiuwen Chen   +16 more
wiley   +1 more source

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