Results 51 to 60 of about 3,337 (198)

A new species of Abdounia (Elasmobranchii, Carcharhinidae) from the base of the Boom Clay Formation (Oligocene) in northwest Belgium [PDF]

open access: yes, 2007
On the basis of isolated teeth, collected from the base of the Boom Clay Formation (Rupelian, Oligocene) at the SVK clay pit (Sint-Niklaas, NW Belgium), a new species of requiem shark, Abdounia belselensis sp. nov., is described.
Mollen, F.H.
core  

Volitional Swimming Kinematics of Blacktip Sharks, Carcharhinus limbatus, in the Wild

open access: yesDrones, 2020
Recent work showed that two species of hammerhead sharks operated as a double oscillating system, where frequency and amplitude differed in the anterior and posterior parts of the body. We hypothesized that a double oscillating system would be present in
Marianne E. Porter   +2 more
doaj   +1 more source

The reproductive biology of the sandbar shark, Carcharhinus plumbeus(Chondrichthyes: Carcharhinidae), from the Gulf of Gabès (southern Tunisia, central Mediterranean) [PDF]

open access: yes, 2005
The sandbar shark, Carcharhinus plumbeus, is commonly captured in the Gulf of Gabès (southern Tunisia). Of 932 specimens collected from January 2001 to May 2004, the smallest mature male was 1545 mm total length and the largest male was 1935 mm.
Abderrahman Bouaïumln   +4 more
core   +1 more source

Morphology and paleoecology of a hybodontiform with serrated teeth, Priohybodus arambourgi, from the Late Jurassic of northeastern Brazil

open access: yesThe Anatomical Record, Volume 309, Issue 1, Page 5-32, January 2026.
Abstract Hybodontiformes was a diverse, successful, and important group of shark‐like chondrichthyans known from a variety of ecosystems. Some representatives of the order had a wide palaeogeographic distribution, as is the case with Priohybodus arambourgi. With a multicuspidate crown, P. arambourgi was the first hybodontiform to develop fully serrated
Estevan Eltink   +5 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)

open access: yesJournal 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   +7 more
doaj   +1 more source

The reproductive biology of the school shark, Galeorhinus galeus Linnaeus 1758 (Chondrichthyes: Triakidae), from the Maghreb shore (southern Mediterranean) [PDF]

open access: yes, 2005
The school shark, Galeorhinus galeus, is commonly captured off the Maghreb shore along the Algerian and Tunisian coasts of the southern Mediterranean.
Christian Capapé   +4 more
core   +1 more source

Fishers’ knowledge about fish trophic interactions in the southeastern Brazilian coast [PDF]

open access: yes, 2015
Data derived from studies of fishers' local ecological knowledge (LEK) can be invaluable to the proposal of new studies and more appropriate management strategies.
Alpina Begossi   +5 more
core   +1 more source

Defining ecological roles of sharks on coral reefs

open access: yesBiological Reviews, Volume 100, Issue 6, Page 2707-2725, December 2025.
ABSTRACT Sharks have often been perceived to play a critical role in the dynamics of coral reef ecosystems globally. Yet, there is relatively little evidence to support this idea across all but a limited set of species and contexts. Research on the roles and importance of reef sharks has been complicated by logistical challenges in collecting data on ...
Natalie V. Klinard   +3 more
wiley   +1 more source

Hunting tactics of the lemon shark, Negaprion brevirostris, in shallow waters of an oceanic insular area in the western equatorial Atlantic

open access: yesNeotropical Ichthyology, 2017
The hunting tactics of lemon sharks, Negaprion brevirostris, are described from underwater and cliff-top observations in the Fernando de Noronha Archipelago, western equatorial Atlantic, Brazil.
Ricardo C. Garla   +4 more
doaj   +1 more source

Length-weight relationships of commercially important marine fishes and shellfishes of the southern coast of Karnataka, India [PDF]

open access: yes, 2004
The parameters of the length-weight relationship of the form W = aLb are presented for 51 species of commercially important marine fishes and shellfishes caught along the southern coast of Karnataka, India.
Abdulrahiman, K.P.   +3 more
core   +1 more source

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