Results 11 to 20 of about 863 (191)

Reallocation of the magnificent catshark Proscyllium magnificum Last & Vongpanich, 2004 to the genus Ctenacis Compagno, 1973 (Carcharhiniformes: Proscylliidae). [PDF]

J Fish Biol
Abstract The magnificent catshark Proscyllium magnificum was described in 2004 based off five specimens collected in the Andaman Sea off Myanmar. It was originally allocated to the genus Proscyllium, but recent molecular analyses suggested it was more closely related to the harlequin catshark Ctenacis fehlmanni from the western Indian Ocean. This study
White WT, O'Neill HL, Yang L, Naylor GJP.   +3 more
europepmc   +4 more sources

Observations on the behavior of Schroederichthys chilensis (Carcharhiniformes, Scyliorhinidae)

Revista Peruana de Biología, 2014
Schroederichthys chilensis, the redspotted catshark or chilean catshark, is an endemic species to Peruvian and Chilean waters. Observations on its behavior in the National Reserve System of Guano Islands, Islets, and Capes – Punta San Juan and Paracas ...
Daniel Flores, Grant D. Adams
doaj   +5 more sources

Three-dimensional fossils of a Cretaceous collared carpet shark (Parascylliidae, Orectolobiformes) shed light on skeletal evolution in galeomorphs [PDF]

Royal Society Open Science
A rich fossil record of teeth shows that many living shark families’ origins lie deep in the Mesozoic. Skeletal fossils of the sharks to whom these teeth belonged are far rarer and when they are preserved are often flattened, hindering understanding of ...
Richard P. Dearden, Zerina Johanson, Helen L. O’Neill, Kieran Miles, Emma L. Bernard, Brett Clark, Charlie J. Underwood, Martin Rücklin   +7 more
doaj   +2 more sources

Edad y crecimiento del tiburón gatuzo Mustelus schmitti (Carcharhiniformes, Triakidae) en aguas costeras de la provincia de Chubut, Patagonia, Argentina

Ecología Austral
El gatuzo, Mustelus schmitti (Carcharhiniformes, Triakidae) es un tiburón endémico del Océano Atlántico Sudoccidental y está catalogado como en peligro crítico por la UICN. La edad y el crecimiento de M.
Ximena Navoa, Nelson D. Bovcon, Matías Suárez, Alessandra Pasti, Kevin J. Jacobi, Marina Coller, Gustavo E. Chiaramonte   +6 more
doaj   +3 more sources

Research goals of special concern for Carcharhinus leucas (Carcharhiniformes: Carcharhinidae) in Latin America – biological, distributional, and conservation priorities

Neotropical Ichthyology
The bull shark (Carcharhinus leucas) is a coastal predator that relies on low salinity habitats (estuaries, rivers, lakes) for reproduction. Identifying inshore nurseries and parturition areas is critical to its conservation.
Peter Gausmann, Philip Matich, Nadia Sandoval Laurrabaquio-Alvarado   +2 more
doaj   +2 more sources

First Record of the Grey Reef Shark Carcharhinus amblyrhynchos, (Bleeker, 1856) (Carcharhiniformes: Carcharhinidae) from the Lakshadweep Sea, India

Journal of Threatened Taxa, 2013
The Grey Reef Shark Carcharhinus amblyrhynchos is a moderately sized and fairly stocky species widely distributed in the Indian and Pacific Oceans from Easter Island and as far west as South Africa.
K.V.A. Kumar, S.P. Khanolkar, P. Pravin, B. Meenakumari, E.V. Radhakrishnan   +4 more
doaj   +3 more sources

Habitat Availability, Jurassic and Cretaceous Origins of the Deep-Bodied Shark Morphotype and the Rise of Pelagic Sharks. [PDF]

Ecol Evol
We find support for a benthic origin of sharks, with four discrete transitions towards pelagic‐type morphology occurring during the Jurassic and Cretaceous. Increased habitat availability driven by biotic and abiotic environmental change may have driven shifts towards pelagic‐type morphology. These results may help explain discordance between molecular
Gayford JH, Jambura PL, Türtscher J, Sternes PC, Seamone SG, Shimada K.   +5 more
europepmc   +2 more sources

The Phenomenon of Piebaldism in Sharks: A Review of Global Sightings and Patterns. [PDF]

Ecol Evol
Chromatic disorders like piebaldism—a rare form of leucism causing partial pigment loss—have been documented in 25 wild shark cases across 17 species and 11 families, with varying anatomical distribution. This study compiles published and unpublished records to better understand the taxonomic and geographical spread of piebaldism and its potential ...
Whitehead DA, Parmegiani A, Gobbato J, Mizyan M, Askin A, Scroglieri S, Galli P, Seveso D, Montano S, Gayford JH.   +9 more
europepmc   +2 more sources

Courtship and Reproduction of the Whitetip Reef Shark Triaenodon obesus (Carcharhiniformes: Carcharhinidae) in an Ex Situ Environment, with a Description of the Late Embryonic Developmental Stage. [PDF]

Animals (Basel), 2022
Santos SR, Takatsuka V, Bonatelli SP, Amaral NLL, Goés MF, Valle RF.   +5 more
europepmc   +3 more sources

Apristurus iterum, a new shark discovered based on egg case morphology and sequence data obtained from a formalin-fixed specimen. [PDF]

J Fish Biol
Abstract Apristurus iterum, a new species of deepwater catshark, is described from northeastern Australia. The new species is diagnosed through examination of its unique egg case morphology based on a single whole gravid female specimen and 10 egg cases deposited in different Australian ichthyological collections.
White WT, O'Neill HL, Jayasinghe SA.
europepmc   +2 more sources