Results 81 to 90 of about 1,152 (209)

Nuclear DNA markers for identification of Beluga and Sterlet sturgeons and their interspecific Bester hybrid

Scientific Reports, 2017
Sturgeons (Acipenseriformes) are among the most endangered species in the world due to fragmentation and destruction of their natural habitats and to overexploitation, mainly for highly priced caviar.
Miloš Havelka, Takafumi Fujimoto, Seishi Hagihara, Shinji Adachi, Katsutoshi Arai   +4 more
doaj   +1 more source

Full-length transcriptome sequencing and comparative transcriptomic analysis to uncover genes involved in early gametogenesis in the gonads of Amur sturgeon (Acipenser schrenckii)

Frontiers in Zoology, 2020
Background Sturgeons (Acipenseriformes) are polyploid chondrostean fish that constitute an important model species for studying development and evolution in vertebrates.
Xiujuan Zhang, Jiabin Zhou, Linmiao Li, Wenzhong Huang, Hafiz Ishfaq Ahmad, Huiming Li, Haiying Jiang, Jinping Chen   +7 more
doaj   +1 more source

Karyological study in backcross hybrids between the sterlet, Acipenser ruthenus, and kaluga, A. dauricus (Actinopterygii: Acipenseriformes: Acipenseridae): A. ruthenus × (A. ruthenus × A. dauricus) and A. dauricus × (A. ruthenus × A. dauricus) [PDF]

Acta Ichthyologica et Piscatoria, 2014
Background. Acipenserid fishes may be divided into three groups in terms of their ploidy levels: 1) 120-chromosomes, 2) 250–270-chromosomes, and 3) about 370-chromosomes.
V.P. Vasil’Ev, E.I. Rachek, E.B. Lebedeva, E.D. Vasil’Eva   +3 more
doaj   +3 more sources

A review of the lower actinopterygian phylogeny [PDF]

, 2005
A review of lower actinopterygian phylogeny has led us to the conclusion that the Cladistia are the sister group of Recent actinopterygians (Actinopteri) and that the extinct Palaeonisciformes are a paraphyletic group, comprising stem-group ...
Schaeffert, B, Masserie, JA, Gardiner, BG   +2 more
core   +3 more sources

First review of recent records of sturgeons and paddlefishes (Acipenseriformes) in the Danube River basin in Slovenia

Natura Sloveniae, 2018
We present recent records of sturgeons and paddlefishes from the rivers in Danube basin in Slovenia after 2000. Strictly, only confirmed and unambiguous records (specimen, picture) were taken into account. The sterlet and the Siberian sturgeon have been
Marijan Govedič, Thomas Friedrich
doaj   +1 more source

Global Patterns and Gaps in Research on Salinity Tolerance of Inland Fishes

Fish and Fisheries, Volume 27, Issue 2, Page 400-411, March 2026.
ABSTRACT Freshwater salinization is an emerging threat impacting approximately one‐third of the world's freshwater bodies. However, the salinity tolerance of many inland fishes remains understudied, despite being a crucial factor in determining species distributions and fitness.
Carlos Cano‐Barbacil, Ignacio Doadrio, Julian D. Olden, Kirk. O. Winemiller, Emili García‐Berthou   +4 more
wiley   +1 more source

Dam Submergence Flows: An Environmental Flow Prescription Designed to Aid Migratory Fish Passage

River Research and Applications, Volume 42, Issue 1, Page 19-29, January 2026.
ABSTRACT As part of a holistic ecosystem‐focused set of unified flow prescriptions, natural spring flood events were enhanced with releases from an upstream reservoir on the Cape Fear River in North Carolina (USA) to submerge a series of low‐use, low‐head lock‐and‐dam structures for anadromous fish to move upstream.
Aaron J. Bunch, Troy M. Farmer, Kyle Rachels, Ashley E. Hatchell, Jeremy McCargo, Fred S. Scharf, Julie E. DeMeester   +6 more
wiley   +1 more source

Evolution of the facial musculature in basal ray-finned fishes

Frontiers in Zoology, 2018
Background The facial musculature is a remarkable anatomical complex involved in vital activities of fishes, such as food capture and gill ventilation.
Aléssio Datovo, Pedro P Rizzato
doaj   +1 more source

Almost billfish: convergent longirostry, micro‐dentition, and possible glandular sinuses in a large teleost fish from the Upper Cretaceous of Northern Italy

Journal of Anatomy, Volume 247, Issue 6, Page 1109-1130, December 2025.
A fossil rostrum fragment of a large teleost fish from the Upper Cretaceous of Northern Italy reveals remarkable anatomical convergences with Cenozoic and Recent billfishes (marlins, swordfishes, and akin). The extinct group Plethodidae independently acquired a long snout, micro‐teeth, and oil‐gland sinuses well before the evolution of true billfishes.
Giovanni Serafini, Jürgen Kriwet, Tommaso Toldo, Eliana Fornaciari, Jacopo Amalfitano, Giorgio Carnevale   +5 more
wiley   +1 more source

Global status and research priorities for rhino rays

Endangered Species Research
Global biodiversity continues to decline in the terrestrial and aquatic realms. Across animal groups, threatened species are at risk of extinction if not managed effectively and permitted to recover.
PM Kyne, P Carlson, RM Aitchison, S Al Hameli, BM D’Alberto, A Gonzalez-Pestana, MJ Groeneveld, J Hanna, D Karnad, DA Ebert   +9 more
doaj   +1 more source