Results 61 to 70 of about 784 (183)

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

open access: yesFrontiers 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   +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]

open access: yesActa 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   +3 more
doaj   +3 more sources

Beyond mammals: the evolution of chewing and other forms of oropharyngeal food processing in vertebrates

open access: yesBiological Reviews, Volume 101, Issue 3, Page 1406-1462, June 2026.
ABSTRACT Oropharyngeal food processing exhibits a remarkable diversity among vertebrates, reflecting the evolution of specialised ‘processing centres’ associated with the mandibular, hyoid, and branchial arches. Although studies have detailed various food‐processing strategies and mechanisms across vertebrates, a coherent and comprehensive terminology ...
Daniel Schwarz   +6 more
wiley   +1 more source

A Comparative Analysis of Life History and Alimentary Canal Morphology and Physiology in Elasmobranchii and Acipenseriformes

open access: yes, 2009
Elasmobranchii and Acipenseriformes are two ancient, yet highly derived groups of cartilaginous fishes with trophic dynamics ranging from planktivore to carnivore, habitat distributions ranging from the northern hemisphere to circumglobal, and widely ...
Maroni, Kendra M.
core   +1 more source

Architecture, mineralization and development of the axial skeleton in Acipenseriformes, and occurrences of axial anomalies in rearing conditions; can current knowledge in teleost fish help?

open access: yes, 2014
International audienceWe review current knowledge of axial skeleton biology in Acipenseriformes with the aim to know whether available data can help in understanding axial anomalies (anomalies of the vertebral column) in reared sturgeons or if further ...
Sire, J. -Y., Leprevost, A.
core   +1 more source

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

open access: yesNatura 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

open access: yesFish 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   +4 more
wiley   +1 more source

Suspension and optical properties of the crystalline lens in the eyes of basal vertebrates.

open access: yes, 2014
We have investigated the apparatus suspending the crystalline lens in the eyes of basal vertebrates. Data are presented for Holocephali (Chondrichthyes) and the actinopterygians Polypteriformes, Polyodontidae (Acipenseriformes), Lepisosteiformes ...
Inga Tuminaite   +6 more
core   +1 more source

Evolution of the facial musculature in basal ray-finned fishes

open access: yesFrontiers 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

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

open access: yesRiver 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   +6 more
wiley   +1 more source

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