Results 41 to 50 of about 524 (160)

Geographical Variation in Body Size and Sexual Size Dimorphism (SSD) in the Epaulette Shark (Hemiscyllium ocellatum)

Journal of Biogeography, Volume 53, Issue 4, April 2026.
ABSTRACT Aim Body size is of paramount importance to the survival of all organisms because of the intimate associations between size, physiological processes and ecology. Sexual size dimorphism (SSD: differences in size between the sexes) is a direct consequence of these ecomorphological relationships, arising due to sex‐based differences in selection ...
Joel H. Gayford, Aaron M. Hasenei, Sophia M. Emmons, Carolyn R. Wheeler, Jodie L. Rummer   +4 more
wiley   +1 more source

Dental Morphology, Palaeoecology and Palaeobiogeographic Significance of a New Species of Requiem Shark (Genus Carcharhinus) from the Lower Miocene of Peru (East Pisco Basin, Chilcatay Formation)

Journal of Marine Science and Engineering, 2022
Nowadays, the requiem sharks comprise one of the most diverse and widespread families of selachians, i.e., Carcharhinidae. Among the carcharhinids, the genus Carcharhinus has the largest number of living species, namely, at least 35.
Alberto Collareta, René Kindlimann, Alessio Baglioni, Walter Landini, Giovanni Sarti, Alí Altamirano, Mario Urbina, Giovanni Bianucci   +7 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

SHARKS OF THE ORDER CARCHARHINIFORMES FROM THE BRITISH CONIACIAN, SANTONIAN AND CAMPANIAN (UPPER CRETACEOUS) [PDF]

Palaeontology, 2008
Abstract:  Bulk sampling of phosphate‐rich horizons within the British Coniacian to Campanian (Upper Cretaceous) yielded very large samples of shark and ray teeth. All of these samples yielded teeth of diverse members of the Carcharhiniformes, which commonly dominate the fauna. The following species are recorded and described: Pseudoscyliorhinus reussi
Underwood, Charlie J., Ward, D.J.
openaire   +1 more source

Insights into the structure of grey reef shark aggregation, Carcharhinus amblyrhynchos (Bleeker, 1856), in two distinct channels of the Maldivian archipelago, Indian Ocean

Journal of Fish Biology, Volume 108, Issue 4, Page 1347-1360, April 2026.
Abstract The grey reef shark Carcharhinus amblyrhynchos is one of the most frequently encountered reef‐associated shark species in the Maldives, yet very little is known about its local size structure or population dynamics. This study provides new insights into two aggregations of C.
Andrea Parmegiani, Jacopo Gobbato, Rilwan Yoosuf, Davide Seveso, Paolo Galli, Andrew Darren Whitehead, Yameen Ismail, Simone Montano   +7 more
wiley   +1 more source

Ecological function of the Ariake Bay as a scalloped hammerhead shark (Sphyrna lewini) nursery in the northwestern Pacific

Global Ecology and Conservation
The scalloped hammerhead (Sphyrna lewini), a cosmopolitan shark inhabiting temperate and tropical waters, is highly vulnerable to fisheries owing to late maturity and low reproductive output.
Atsuko Yamaguchi, Yoshimi Ogino, Kojiro Hara, Masayuki Nakamura, Mao Watanabe, Keisuke Furumitsu   +5 more
doaj   +1 more source

Optimizing a Novel eDNA‐Based Framework for Reef Fish Biodiversity Monitoring Using an Autonomous Filtration System and in situ Nanopore Sequencing

Ecology and Evolution, Volume 16, Issue 3, March 2026.
This study presents a comprehensive eDNA metabarcoding protocol optimized for monitoring fish biodiversity in coral reefs and other remote marine environments. By combining an autonomous underwater filtration system, Oxford Nanopore sequencing, and a 12S reference database specifically developed for French Polynesia, the method enables efficient and ...
Lucie Cartairade, Julie Poulain, Quentin Carradec, Sophie Mangenot, Patrick Wincker, Serge Planes   +5 more
wiley   +1 more source

Miocene stratigraphy and vertebrate paleontology along the western side of Cerros Cadena de los Zanjones (East Pisco Basin, Peru)

Journal of Maps
The Miocene Pisco Formation (East Pisco Basin, Peru) is renowned for its abundant, well-preserved fossils of marine vertebrates, representing one of the most spectacular and complete records of Neogene marine vertebrates worldwide.
Giulia Bosio, Alberto Collareta, Matteo Pedini, Maria Elena Gastaldello, Francesco Nobile, Luca Pellegrino, Pietro Paolo Pierantoni, Elisa Malinverno, Olivier Lambert, Giuseppe Marramà, Walter Landini, Giorgio Carnevale, Rafael Varas-Malca, Claudio Di Celma, Stefano Mazzoli, Mario Urbina, Giovanni Bianucci   +16 more
doaj   +1 more source

The Overlooked Threat of Global Warming on Elasmobranch Fertility

Fish and Fisheries, Volume 27, Issue 1, Page 41-55, January 2026.
ABSTRACT Climate change is increasingly recognised as a critical threat to global biodiversity, yet its impacts on reproductive processes remain poorly understood in many marine taxa. Elasmobranchs (sharks, skates and rays) represent a particularly vulnerable group due to their peculiar life histories, low fecundity, and diverse reproductive modes.
Noémie Coulon, Eric Feunteun, Alexandre Carpentier, Anne Lizé   +3 more
wiley   +1 more source

Diverse mechanical properties, composition, and performance of shark dermal denticles

Nature Communications
Sharks have roamed the oceans since the Devonian, surviving multiple mass extinctions. Today, sharks are agile, streamlined swimmers, ambush predators hiding beneath the sand, and giants cruising in slow motion.
Rikke Beckmann Dahl, Ashish Ghimire, Yoshiyuki Iizuka, Jen-Pan Huang, Peter Rask Møller, Guan-Shuo Mai, Wei-Chen Lin, Cheng-Chun Yang, Yu-Chun Chou, Tsung-Hui Huang, Po-Yu Chen, Sheng-Feng Shen   +11 more
doaj   +1 more source