Results 71 to 80 of about 1,638 (241)

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

A new Orygmatobothrium Diesing, 1863 (Eucestoda, Tetraphyllidea) parasite of Mustelus schmitti Springer, 1939 (Carcharhiniformes, Triakidae) from the southwestern Atlantic Ocean

, 2001
Suriano, Delia Mabel, Labriola, Juliana Beatriz (2001): A new Orygmatobothrium Diesing, 1863 (Eucestoda, Tetraphyllidea) parasite of Mustelus schmitti Springer, 1939 (Carcharhiniformes, Triakidae) from the southwestern Atlantic Ocean.
Labriola, Juliana Beatriz, Suriano, Delia Mabel   +1 more
core   +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

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

Dichichthyidae, a New Family of Deepwater Sharks (Carcharhiniformes) from the Indo–West Pacific, with Description of a New Species

Fishes
The genus Dichichthys was resurrected for five species previously allocated to the genus Parmaturus in the family Pentanchidae. Supraorbital crests on the chondrocranium distinguish Dichichthys from Parmaturus and other members of the family Pentanchidae.
William T. White, Andrew L. Stewart, H. L. O'Neill, G. Naylor   +3 more
semanticscholar   +1 more source

Stable isotope and fatty acid analyses reveal significant differences in trophic niches of smooth hammerhead Sphyrna zygaena (Carcharhiniformes) among three nursery areas in northern Humboldt Current System

PeerJ, 2021
Fishery pressure on nursery areas of smooth hammerhead in northern Peruvian coast have become a serious threat to sustainability of this resource. Even though, some management actions focused on conservation of the smooth hammerhead populations were ...
Eduardo Segura-Cobeña, J. Alfaro‐Shigueto, Jeffrey C. Mangel, Á. Urzúa, K. Górski   +4 more
semanticscholar   +1 more source

FIGURE 3 in Hemitriakis indroyonoi sp. nov., a new species of houndshark from Indonesia (Carcharhiniformes: Triakidae)

, 2009
FIGURE 3. Late-term embryos of Hemitriakis indroyonoi sp. nov., paratypes CSIRO H 6818–01 (2 of 3 specimens): A, Lateral view; B, Dorsal view.Published as part of White, William T. & Compagno, Leonard J. V., 2009, Hemitriakis indroyonoi sp.
Compagno, Leonard J. V. (5248705), White, William T., Compagno, Leonard J. V., White, William T. (5201869)   +3 more
core   +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