Results 61 to 70 of about 1,744 (191)

CLOFFAR - update 3 - supplement to Checklist of the Freshwater Fishes of Argentina [PDF]

open access: yes, 2017
In May 2016 we have published the second update to CLOFFAR and in these few months a total of 22 changes have summed up. The total number of fishes known from the freshwaters of Argentina has increased to 538, caused by one new Hoplias and 13 first ...
Koerber, Stefan   +2 more
core  

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

open access: yesJournal 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   +5 more
wiley   +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

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

Global status and research priorities for rhino rays

open access: yesEndangered 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   +9 more
doaj   +1 more source

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

open access: yesAdvanced 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   +14 more
wiley   +1 more source

Influence of sperm density on cryopreservation outcomes in sturgeon [PDF]

open access: yes, 2018
The goals of this experiment were the establishment of procedure for variation of spermatozoid concentration without compromising quality, establishment of highest cell concentration without decreasing post-thaw motility by routine freezing protocol and ...
Nascimento, João Pedro Oliveira
core  

Lungfish‐like antero‐labial tooth addition and amphibian‐like enameloid‐enamel transition in the coronoid of a Devonian stem actinopterygian

open access: yesJournal of Anatomy, Volume 247, Issue 3-4, Page 418-441, September/October 2025.
The tooth patterning logic, which cannot be inferred from surface morphology, is revealed by visualizing buried tooth remnants in 3D. The primary teeth are added labially, initially organized in radial rows, which transition into linear rows where the coronoid becomes slender.
Donglei Chen
wiley   +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

Application of microsatellite markers to determine populations of the Persian sturgeon (Acipenser persicus) in the south of Caspian Sea [PDF]

open access: yes, 2011
The objective of this study was to analyse the population genetic structure of the Persian sturgeon (Acipenser persicus) in Sefidrud and Gorganrud rivers watershed based on the characterization of microsatellite markers during 2006 - 2008. 100 samples of
Baradaran Noveiri, S.   +5 more
core  

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