Results 71 to 80 of about 2,847 (184)

Photo‐identification as a tool to study small‐spotted catshark Scyliorhinus canicula

, 2018
6 pages, 2 figuresPhoto‐identification (photo‐ID) was tested as a means to identify individual small‐spotted catsharks Scyliorhinus canicula. The spotting pattern of the caudal region of S. canicula was used for the tests and revealed that photo‐ID is an
Perezgrueso, J., Coll, Marta, Barría, Claudio, Navarro, Joan, J. Navarro, C. Barría, M. Coll, A. Perezgrueso   +7 more
core   +1 more source

In vivo staining with alizarin for ageing studies on chondrichthyan fishes

Aquatic Living Resources, 2020
Age determination for stock assessments and conservation of cartilaginous fishes is mainly obtained by counting the annual growth bands in vertebrae. Recent studies show numerous inconsistencies and the need for systematic validation.
Caraguel Jean-Marie, Barreau Thomas, Brown-Vuillemin Sarah, Iglésias Samuel P.   +3 more
doaj   +1 more source

Resilience to Cardiac Aging in Greenland Shark Somniosus microcephalus

Aging Cell, Volume 25, Issue 5, May 2026.
Greenland shark Somniosus microcephalus shows severe cardiac aging such as fibrosis, lipofuscin buildup, mitochondrial damage, and oxidative stress, unseen in comparison species Etmopterus spinax and Nothobranchius furzeri, yet remain healthy. S. microcephalus resilience suggests unique mechanisms that preserve heart function for centuries, offering ...
Elena Chiavacci, Kirstine Fleng Steffensen, Pierre Delaroche, Emanuele Astoricchio, Amalie Bech Poulsen, Daniel Brayson, Fulvio Garibaldi, Luca Lanteri, Christian Pinali, Giovanni Roppo Valente, Federico Vignati, John Fleng Steffensen, Holly Shiels, Eva Terzibasi Tozzini, Alessandro Cellerino   +14 more
wiley   +1 more source

Molecular insights into electroreceptor ribbon synapses from differential gene expression in sturgeon lateral line organs

Journal of Anatomy, Volume 248, Issue 5, Page 784-805, May 2026.
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.
Alexander S. Campbell, Martin Minařík, David Buckley, Tanmay Anand, David Gela, Martin Pšenička, Clare V. H. Baker   +6 more
wiley   +1 more source

Scyliorhinus Blainville 1816

, 2021
<p> <b> Genus <i>Scyliorhinus</i> Blainville, 1816</b> </p> <p> <i>Scyliorhinus</i> (subgenus of <i>Squalus</i>) Blainville, 1816: 121. Type species: <i>Scyliorhinus canicula</i&
Kyne, Peter M., Ebert, David A., Wintner, Sabine P.   +2 more
core   +1 more source

Multi‐Seasonal eDNA Metabarcoding Highlights a Resurgence in Fish Diversity Across a Severely Impacted Estuarine Ecosystem

Aquaculture, Fish and Fisheries, Volume 6, Issue 2, April 2026.
ABSTRACT Aquatic ecosystems have been in an alarming state of decline for decades. In particular, estuarine ecosystems have experienced long‐term declines in fish diversity due to factors such as habitat degradation, pollution and altered hydrology. Monitoring these systems is often limited by the difficulty and cost of conventional survey methods.
Jake M. Jackman, Naiara Guimarães Sales, Chiara Benvenuto, Andrea Drewitt, Andrew Wolfenden, Peter E. Robins, Ilaria Coscia, Allan D. McDevitt   +7 more
wiley   +1 more source

Comparative feeding ecology of two elasmobranch species, Squalus blainville and Scyliorhinus canicula, off the coast of Portugal [PDF]

, 2012
The small-spotted catshark (Scyliorhinus canicula) (Linnaeus, 1758) and the longnose spurdog (Squalus blainville) (Risso, 1826) are two species occurring in the European and western African continental shelves with a wide geographical distribution.
Sá, Cátia, Pardal, Miguel Ângelo, Falcão, Joana, Cabral, Henrique Nogueira, Martinho, Felipe   +4 more
core  

Can a threshold value be used to classify chondrichthyan reproductive modes: systematic review and validation using an oviparous species.

PLoS ONE, 2012
The maternal-embryonic nutritional relationship in chondrichthyans has been poorly explored. Consequently, accurately discerning between their different reproductive modes is difficult; especially lecithotrophy and incipient histotrophy.
Holly A Frazer, Megan Ellis, Charlie Huveneers   +2 more
doaj   +1 more source

Heterochronic shift in Hox-mediated activation of sonic hedgehog leads to morphological changes during fin development. [PDF]

PLoS ONE, 2009
We explored the molecular mechanisms of morphological transformations of vertebrate paired fin/limb evolution by comparative gene expression profiling and functional analyses.
Koji Sakamoto, Koh Onimaru, Keijiro Munakata, Natsuno Suda, Mika Tamura, Haruki Ochi, Mikiko Tanaka   +6 more
doaj   +1 more source

Shedding light on the parasite communities and diet of the deep‐sea shark Deania profundorum (Smith & Radcliffe, 1912) (Squaliform: Centrophoridae) from the Avilés Canyon (southern Bay of Biscay)

Journal of Fish Biology, Volume 108, Issue 4, Page 1150-1169, April 2026.
Abstract Deep‐sea elasmobranchs are less resilient to the increasing scale of anthropogenic impacts such as fisheries, owing to their life‐history traits. The necessity for proper management measures is hampered by the scant knowledge on these taxa and their biology. Here we provide the first comprehensive insight into the parasite infracommunities and
Wolf Isbert, Cristina Rodríguez‐Cabello, Francisco E. Montero, Maite Carrassón, Inmaculada Frutos, Ana Pérez‐del‐Olmo   +5 more
wiley   +1 more source