Results 111 to 120 of about 14,511 (238)

A new species of Dermopristis Kearn, Whittington & Evans-Gowing, 2010 (Monogenea: Microbothriidae), with observations on associations between the gut diverticula and reproductive system and on the presence of denticles in the nasal fossae of the host Glaucostegus typus (Bennett) (Elasmobranchii: Rhinobatidae) [PDF]

, 2011
Dermopristis cairae n. sp. (Microbothriidae) is described from the skin and possibly from the nasal fossae of the giant shovelnosed ray Glaucostegus typus (Bennett). The new species is distinguished from D.
EM Perkins, EW Price, GC Kearn, GC Kearn, GC Kearn, GC Kearn, GC Kearn, Graham C. Kearn, Ian D. Whittington, ID Whittington, M Beverley-Burton, NG Sproston, RL Abel, T Tappenden, V Glennon   +14 more
core   +1 more source

Visual Modelling to Predict Behavioural Responses of Catsharks, Skates, and Plaice to Artificial Light for Use in Bycatch Reduction

Fisheries Management and Ecology, Volume 33, Issue 3, Page 463-478, June 2026.
ABSTRACT Light can be used to deter bycatch from fishing nets, but few studies have aimed to quantify how species view and respond to light. Here, we used visual models to predict how target (plaice Pleuronectes platessa) and bycatch (small‐spotted catshark Scyliorhinus canicular and undersized skates, Raja spp) species, captured in mixed demersal ...
Jasmine Somerville, Jon Blount, Martin Stevens   +2 more
wiley   +1 more source

The status of shark and ray fishery resources in the Gulf of California: applied research to improve management and conservation [PDF]

, 2009
Seasonal surveys were conducted during 1998–1999 in Baja California, Baja California Sur, Sonora, and Sinaloa to determine the extent and activities of artisanal elasmobranch fisheries in the Gulf of California. One hundred and forty–seven fishing sites,
Bizzarro, Joseph J., Cailliet, Gregor M., Castillo–Géniz, J. Leonardo, Hueter, Robert E., Márquez– Farías, J. Fernando, Smith, Wade D., Tyminski, John, Villavicencio–Garayzar, Carlos J.   +7 more
core  

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

Occurrence of the hemoparasite Cyrilia spp. in the Amazonian stingray Potamotrygon wallacei [PDF]

Anais da Academia Brasileira de Ciências
Freshwater stingrays play a crucial ecological role in the Amazon; however, studies on their parasitic fauna still need to be made available. This study aimed to investigate the occurrence of hemoparasites, specifically Cyrilia spp., in specimens of ...
ANA CLARA N. ALVES, LARISSA D. FONSECA, RAYANA M. PAIXÃO, ADRIANO T. OLIVEIRA   +3 more
doaj   +1 more source

An informational summary on elasmobranchs in Elkhorn Slough [PDF]

, 1994
Shark angling derbies have been held in Elkhorn Slough since 1946, and archery derbies since about 1973. Elkhorn Slough is an important pupping and breeding area for leopard sharks, Triakis semifasciata, and bat rays, Myliobatis californica, and a ...
Spratt, Jerome D.
core  

Predictive habitat suitability models to aid conservation of elasmobranch diversity in the central Mediterranean Sea [PDF]

, 2015
Commercial fisheries have dramatically impacted elasmobranch populations worldwide. With high capture and bycatch rates, the abundance of many species is rapidly declining and around a quarter of the world’s sharks and rays are threatened with extinction.
A Dell’Apa, A Gouraguine, A Lomba, A Maldonado, AH Welsh, AJ Richardson, Antoine Guisan, B Gratwicke, B Planque, CD Maravelias, CD Maravelias, CS Martin, CW Speed, D Damalas, D Dunn, D Levi, E Hunter, E Massutí, F Ferretti, F Fiorentino, G Aarts, G Garofalo, G Garofalo, G Garofalo, G Tserpes, J Bertrand, J Elith, J Ellis, J Skjæraasen, JD Stevens, JM Potts, K Béranger, M Gristina, M McArthur, M Pardo, M Valls, MB Araújo, MG Pennino, MR Heithaus, N Dulvy, P Colantoni, P Cotton, P Dutilleul, P Petitgas, S Dueri, S Heinänen, S Jukic-Peladic, S Katsanevakis, S Ragonese, SC Barry, SJ Pittman, SJ Pittman, T Hopkins, T Martin, T Rangel, T Russo, V Lauria, V Lauria, VN De Jonge, Y Aldebert   +59 more
core   +2 more sources

Projected Risks to Biodiversity Conservation Along Brazil's Equatorial Margin Under Expanding Offshore Oil Development

Conservation Letters, Volume 19, Issue 3, May/June 2026.
ABSTRACT Brazil's Equatorial Margin is one of the least studied yet most ecologically significant regions of the Atlantic Ocean. Encompassing the Amazon coast, the region is entering a new phase of industrial expansion. In 2025, Brazil issued its first offshore oil exploration license in two decades, opening the door to large‐scale hydrocarbon ...
Rafael A. Magris, Martinho Marta‐Almeida, Carlos Alessandre Domingos Lentini   +2 more
wiley   +1 more source

The distribution of a rarely encountered stingray, Megatrygon microps, informed by citizen science: A systematic review

Conservation Science and Practice, Volume 8, Issue 5, May 2026.
This study combines literature and online data sources to expand the smalleye stingray's range, highlight ecological interactions and specific threats. Abstract Many chondrichthyan fishes are experiencing alarming population declines primarily due to overfishing, exacerbated by their inherently vulnerable life history traits including slow growth rates
Jennifer Ann Keeping, Artemis Caine, Charlotte Hopkins, David Bailey, Andrew Chin   +4 more
wiley   +1 more source

Use of Pristis spp. (Elasmobranchii: Pristidae) by Hunter-Gatherers on the Coast of São Paulo, Brazil

Neotropical Ichthyology
Artifacts made from rays (rostral teeth and spine) are very common in shell mounds on the coast of São Paulo, Brazil. The presence of the genus Pristis among the studied species of elasmobranch fishes in this shell mounds reinforces the hypothesis these ...
Manoel M. B. Gonzalez
doaj   +1 more source