Results 41 to 50 of about 1,230 (177)

New light on the trophic ecology of Carcharodon hastalis from teeth embedded in Miocene cetacean vertebrae from Calvert Cliffs in Maryland, USA

Acta Palaeontologica Polonica
Recent isotopic analyses of the teeth of the extinct lamnid Carcharodon hastalis showed that it fed at a comparable trophic level as was the fossil and modern great white shark, Carcharodon carcharias. Although there are many examples of shark bite marks
Stephen J. Godfrey, Victor J. Perez, Marcus Jones, Phillip F. Chapman, Nathan Spencer, Jason E. Osborne   +5 more
doaj   +1 more source

Phylogeny of the Electric Rays of the Family Narcinidae (Gill, 1862): Systematic Review and Evidence of the Dispersal Routes to America

Aquatic Conservation: Marine and Freshwater Ecosystems, Volume 36, Issue 6, June 2026.
ABSTRACT The family Narcinidae has a cosmopolitan distribution; however, its systematic composition and phylogenetic position within Torpediniformes remain poorly understood. This study evaluates the evolutionary and biogeographic history of the family Narcinidae and investigates its distribution patterns using molecular systematics.
Luis Fernando da Silva Rodrigues‐Filho, Richard Klein Castro Silva, Eduardo Lopes de Lima, Raquel Sicca‐Ramirez, Getúlio Rincon, Jorge Luiz Silva Nunes, Iracilda Sampaio, João Braullio de Luna Sales   +7 more
wiley   +1 more source

Danger on the plate: human health risks derived from the consumption of angular angelshark (Squatina guggenheim) meat in southeastern Brazil

Frontiers in Toxicology
IntroductionShark and ray species are particularly vulnerable to pollutant bioaccumulation, including metals and metalloids, due to their k-strategist characteristics and mid–high trophic level.
Amanda Pontes Lopes, Amanda Pontes Lopes, Rebeca Dias de Souza Coutinho, Rebeca Dias de Souza Coutinho, Tatiana Dillenburg Saint’Pierre, Rachel Ann Hauser-Davis   +5 more
doaj   +1 more source

Beyond mammals: the evolution of chewing and other forms of oropharyngeal food processing in vertebrates

Biological Reviews, Volume 101, Issue 3, Page 1406-1462, June 2026.
ABSTRACT Oropharyngeal food processing exhibits a remarkable diversity among vertebrates, reflecting the evolution of specialised ‘processing centres’ associated with the mandibular, hyoid, and branchial arches. Although studies have detailed various food‐processing strategies and mechanisms across vertebrates, a coherent and comprehensive terminology ...
Daniel Schwarz, Maja Mielke, Stephan Handschuh, Anthony Herrel, Patrick Lemell, Léa Da Cunha, Nicolai Konow   +6 more
wiley   +1 more source

The current status of the Adriatic sea fish biodiversity

Frontiers in Marine Science, 2015
The marine biodiversity of the Mediterranean Sea is nowadays facing substantial structural changes in flora and fauna. Such changes were observed in the Adriatic Sea as well.
Jakov Dulčić, Lovrenc Lipej
doaj   +1 more source

A new euselachian shark from the early Permian of the Middle Urals, Russia [PDF]

Acta Palaeontologica Polonica, 2017
The isolated teeth of a new euselachian shark Artiodus prominens Ivanov and Duffin gen. et sp. nov. have been found in the Artinskian Stage (Early Permian) of Krasnoufimskie Klyuchiki quarry (Sverdlovsk Region, Middle Urals, Russia).
Alexander O. Ivanov, Christopher J. Duffin, Serge V. Naugolnykh   +2 more
doaj   +1 more source

One Assay to Rule Them All: Development of a Global Environmental DNA Tool to Support Range‐Wide Surveys of an Imperiled Sawfish and Its Application in the Eastern Tropical Pacific

Ecology and Evolution, Volume 16, Issue 6, June 2026.
To identify promising locations where Largetooth Sawfish, Pristis pristis, may persist, a novel species‐specific Droplet Digital PCR (ddPCR) assay was designed capable of detecting a single copy of DNA, with in silico and in vitro validation experiments indicating functionality across the species' historical range.
Juan C. Cubillos‐M, Annmarie Fearing, Demian D. Chapman, Peter M. Kyne, P. Joana Dias, Cindy Gonzalez, Ryan N. Lehman, Yaliana Chichaco, Bryan L. Huerta‐Beltrán, Kayla L. McCulloch, Sarah M. Toepfer, John K. Carlson, Nicole M. Phillips   +12 more
wiley   +1 more source

Marine Parasite Biogeography Mirrors Host Patterns Across Latitude, Area, and Diversity

New Zealand Journal of Zoology, Volume 53, Issue 2, June 2026.
Parasites are integral components of biodiversity, yet they remain poorly represented in large‐scale biogeographic theory. In this study, we test whether marine parasites follow three macroecological patterns established for free‐living taxa, namely that parasite species richness: (1) scales positively with area (both host body size and geographic area)
Thomas C. Morris, Mark John Costello, Nicholas J. Matzke   +2 more
wiley   +1 more source

Standardized data to support conservation prioritization for sharks and batoids (Elasmobranchii)

Data in Brief, 2020
We collated and synthesized information on 1,226 Elasmobranch species (i.e., sharks, rays, and skates) globally from a wide range of sources. We obtained curated and standardized data from online databases, legal documents, press releases, and websites.
Oegelund Nielsen, Rikke, da Silva, Rita, Juergens, Jacqueline, Staerk, Johanna, Lindholm Sørensen, Line, Jackson, John, Smeele, Simeon Quirinus, Conde, Dalia A   +7 more
openaire   +4 more sources

Evaluating and Advancing the Use of Shore‐Based Observers for Scientific Sampling and Catch Verification in High‐Volume Fisheries

Fisheries Management and Ecology, Volume 33, Issue 3, Page 612-629, June 2026.
ABSTRACT Shore‐based observers are increasingly being used in place of at‐sea observers to monitor and sample commercial fisheries catch. However, few evaluations assess whether these programs meet their stated goals or how to optimize them, and industry data are rarely tested for accuracy despite serving as the foundation for catch accounting. Using a
Christian Gredzens, Andy Kingham, Jason E. Jannot   +2 more
wiley   +1 more source