Results 21 to 30 of about 1,410 (199)

HEAVY METALS IN ORGANS AND TISSUES OF STERLET (ACIPENSER RUTHENUS L.) IN THE DNIEPER-BUG ESTUARY

Ribogospodarsʹka Nauka Ukraïni, 2016
Purpose.To iInvestigate and analyze the peculiarities of the accumulation of heavy metals (Cu, Fe, Zn, Cd, Pb, Co, Ni and Mn) in the organs (muscles, gills, liver, kidneys, fins, intestine) and tissues of sterlet (Acipenser ruthenus Linnaeus, 1758) for ...
Yu. Sytnik, Yu. Pilipenko, P. Shevchenko, V. Plugatarev, N. Kolesnyk, M. Simon, A. Melnyk, N. Dorofey   +7 more
doaj   +2 more sources

Population Status and Conservation of Sterlet (Acipenser ruthenus L.) in the Transboundary Irtysh River Connecting China, Kazakhstan, and Russia: Evidence from Long-Term Monitoring and Broodstock Development

Fishes
Restoration of natural sterlet (Acipenser ruthenus) stocks in the transboundary Irtysh River, shared by China, Kazakhstan, and Russia, is of critical importance for biodiversity conservation and represents a strategic priority for sustainable management ...
Saule Zh. Assylbekova, Rinat T. Barakov, Nailya Bulavina, Aibek M. Kassymkhanov, Moldir Aubakirova, Angsar Satbek, Xia-Long Luo, Kuanysh B. Isbekov, Almat S. Suyubayev   +8 more
doaj   +2 more sources

Molecular insights into electroreceptor ribbon synapses from differential gene expression in sturgeon lateral line organs. [PDF]

J Anat
The expression of various genes involved in synapse development, stability and/or function was studied in developing mechanosensory neuromasts and electrosensory ampullary organs in sterlet sturgeon. Most were shared, including Slc17a8, Slc1a3 and Nrxn3, but Cbln18 was neuromast‐restricted and Tulp1 was ampullary organ‐restricted.
Campbell AS, Minařík M, Buckley D, Anand T, Gela D, Pšenička M, Baker CVH.   +6 more
europepmc   +3 more sources

Two Paralogues as They Like It: Conserved and Divergent Evolution of Vertebrate Gcm Genes. [PDF]

Evol Dev
Comparative overview of Gcm1 and Gcm2 paralogues across vertebrates. Gcm2 is conserved in pharyngeal‐derived organs across gnathostomes, whereas Gcm1 shows lineage‐specific diversification from an ancestral pharyngeal context, including secondary loss in teleosts, distinct expression in bichir gills and skin, and broader expression in mammals ...
Shono T, Tatsumi N, Miyake T, Kuraku S, Okabe M.   +4 more
europepmc   +2 more sources

Restauration & Ökologie des Sterlets in der österreichischen Donau – das LIFE-Sterlet-Projekt 2015–2022

Österreichische Wasser- und Abfallwirtschaft, 2022
ZusammenfassungStöre sind ein wesentliches Faunenelement der Donau und stellten in der Vergangenheit durch ihre Migration ein prägendes ökologisches Verbindungsglied zwischen dem alpinen Donauraum und dem Schwarzen Meer dar. Heute sind zwei von sechs Donaustörarten bereits ausgestorben und die verbliebenen Arten sind durch Wilderei, Beifang ...
Thomas Friedrich, Jakob Neuburg, Heidrun Eichhorn, Stephanie Popp   +3 more
openaire   +1 more source

The sterlet sturgeon genome sequence and the mechanisms of segmental rediploidization [PDF]

Nature Ecology & Evolution, 2020
Abstract Sturgeons seem to be frozen in time. The archaic characteristics of this ancient fish lineage place it in a key phylogenetic position at the base of the ~30,000 modern teleost fish species. Moreover, sturgeons are notoriously polyploid, providing unique opportunities to investigate the evolution of ...
Du, Kang, Stöck, Matthias, Kneitz, Susanne, Klopp, Christophe, Woltering, Joost, Adolfi, Mateus Contar, Feron, Romain, Prokopov, Dmitry, Makunin, Alexey, Kichigin, Ilya, Schmidt, Cornelia, Fischer, Petra, Kuhl, Heiner, Wuertz, Sven, Gessner, Jörn, Kloas, Werner, Cabau, Cédric, Iampietro, Carole, Parrinello, Hugues, Tomlinson, Chad, Journot, Laurent, Postlethwait, John, Braasch, Ingo, Trifonov, Vladimir, Warren, Wesley, Meyer, Axel, Guiguen, Yann, Schartl, Manfred   +27 more
openaire   +7 more sources

Restoration and ecology of sterlets in the Austrian Danube – The way from LIFE-Sterlet to LIFE-Boat-4-Sturgeon

, 2022
Sturgeons are an essential faunal element of the Danube and provided a link between the Alpine Danube basin and the Black Sea through their migration in the past. Today, two out of six Danube sturgeons are already regionally extinct, and the remaining species are threatened with extinction due to poaching, bycatch, migration barriers and habitat loss ...
Eichhorn, Heidrun, Neuburg, Jakob, Popp, Stefanie, Friedrich, Thomas   +3 more
openaire   +2 more sources

Disturbances in the ploidy level in the gynogenetic sterlet Acipenser ruthenus [PDF]

Journal of Applied Genetics, 2017
Artificial mitotic gynogenesis, a chromosome set manipulation, is applied to provide the homozygous progeny with only maternal inheritance. Here, gynogenetic development was induced in the sterlet Acipenser ruthenus L. (Acipenseridae) by activation of the eggs originating from albino females with the UV-irradiated spermatozoa from wild-coloured males ...
Dorota Fopp-Bayat, Konrad Ocalewicz, Marcin Kuciński, Małgorzata Jankun, Łączyńska, B.   +4 more
openaire   +3 more sources

The role of ichthyopathological observations in the industrial reproduction of sterlet for the tasks of release into the Kuibyshev reservoir [PDF]

E3S Web of Conferences, 2021
The features of the industrial reproduction of sterlet in the Middle Volga region are considered. The necessity of further increasing the volume of production and release of juvenile sterlet to the Kuibyshev reservoir is shown.
Kalaida Marina, Govorkova Lada, Khamitova Madina, Anokhina Olga, Kalaida Andrey   +4 more
doaj   +1 more source

Sperm Lipid Composition in Early Diverged Fish Species: Internal vs. External Mode of Fertilization

Biomolecules, 2020
The lipid composition of sperm membranes is crucial for fertilization and differs among species. As the evolution of internal fertilization modes in fishes is not understood, a comparative study of the sperm lipid composition in freshwater ...
Kathrin M. Engel, Viktoriya Dzyuba, Alexandre Ninhaus-Silveira, Rosicleire Veríssimo-Silveira, Dirk Dannenberger, Jürgen Schiller, Christoph Steinbach, Borys Dzyuba   +7 more
doaj   +1 more source