Results 61 to 70 of about 1,783 (204)

A comparison of methods for determining ploidy in white sturgeon (Acipenser transmontanus) [PDF]

, 2019
Release of sturgeon with abnormal ploidy into the wild may result in reduced fitness due to lowered fertility in the F2 and subsequent generations. Further, there is evidence that ploidy affects reproductive development and caviar yield.
Fiske, JA, Goodbla, AM, Holem-Bell, CE, Schreier, AD, Todgham, AE, Van Eenennaam, JP, Young, SP   +6 more
core  

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

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

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

A Nuclear DNA Perspective on Delineating Evolutionarily Significant Lineages in Polyploids: The Case of the Endangered Shortnose Sturgeon (Acipenser brevirostrum) [PDF]

, 2014
The shortnose sturgeon, Acipenser brevirostrum, oft considered a phylogenetic relic, is listed as an “endangered species threatened with extinction” in the US and “Vulnerable” on the IUCN Red List. Effective conservation of A.
Aunins, Aaron W., Brown, Bonnie L., Henderson, Anne P., Kieffer, Micah C., King, Tim L., Kynard, Boyd E., Peterson, Douglas L.   +6 more
core   +4 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

Subgenome Partitioning and Polyploid Genome Evolution in the Loach Family Botiidae (Order Cypriniformes)

Advanced Science, Volume 12, Issue 36, September 25, 2025.
This study investigates subgenome evolution and polyploidy in Cypriniformes fish, revealing complex phylogenetic relationships and genomic dynamics. By applying advanced subgenome partitioning methods, it uncovers novel insights into transposon activity and gene fractionation.
Yunyun Lv, Jia Li, Yanping Li, Yu Huang, Qiang Lai, Zhengyong Wen, Jun Wang, Yang He, Jinrong Shi, Zejin Huang, Ying Jiang, Yves Van de Peer, Qiong Shi, Biwen Xie, Yongming Wang   +14 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