Results 31 to 40 of about 1,443 (143)

Metazoan parasite community as a potential biological indicator in juveniles of the starry smooth-hound Mustelus asterias Cloquet, 1819 (Carcharhiniformes Triakidae)

Aquatic Living Resources, 2022
The starry smooth-hound Mustelus asterias is a near-threatened coastal shark in Europe, whose parasitofauna is largely unknown. We studied metazoan parasites of 20 immature sharks (13 males and seven females) from the English Channel and we examined ...
Gérard Claudia, Hervé Maxime R., Hamel Héloïse, Gay Mélanie, Barbier Michel, Barreau Thomas   +5 more
doaj   +1 more source

Características histológicas del útero de Sympterygia acuta (Garman, 1877) y Sympterygia bonapartii (Müller & Henle, 1841) (Chondrichthyes; Rajidae) [PDF]

, 2013
Los condrictios constituyen un clado sumamente conservado y vulnerable a la explotación, que ha cobrado una importancia creciente en los últimos años. Sin embargo, existe poca información sobre los aspectos morfológicos relacionados con la reproducción ...
Díaz Andrade, María Constanza, Galíndez, Elena Juana, Lopez Cazorla, Andrea Cecilia   +2 more
core   +1 more source

Sharks of the order Carcharhiniformes from the British Coniacian, Santonian and Campanian (Upper Cretaceous). [PDF]

, 2008
Bulk sampling of phosphate-rich horizons within the British Coniacian to Campanian (Upper Cretaceous) yielded very large samples of shark and ray teeth.
AGASSIZ L. J. R., ANTUNES M. T., BLAINVILLE H. M. D. de, BONE A., BONE A., CAPPETTA H., CAPPETTA H., CAPPETTA H., CAPPETTA H., CAPPETTA H., CAPPETTA H., CASE G. R., CASE G. R., COMPAGNO L. J. V., CUMBAA S. L., DAIMERIES A., DALINKEVICIUS J. A., DAVIS J. W., DINELEY D. L., FLETCHER T. P., FOWLER H. W., GARMAN S., GILL T., GRAY J. E., GURR P. R., HALTER M. C., HAY O. P., HERMAN J., HERMAN J., HERMAN J., HERMAN J., JARVIS I., JARVIS I., JARVIS I., JORDAN D. S., LERICHE M., LINNAEUS C., MARCK W. von der, MORTIMORE R. N., MULLER A., MULLER A., MULLER J., NOUBHANI A., SHIRAI S., SIVERSON M., UNDERWOOD C. J., UNDERWOOD C. J., UNDERWOOD C. J., UNDERWOOD C. J., UNDERWOOD C. J., WAGNER J. A., WELTON B. J., WHITE H. G. O., WILLCOX N. R., WOODROOF P. B., WOODWARD A. S.   +55 more
core   +1 more source

Anthobothrium galeorhini n. sp. (Eucestoda: Tetraphyllidea) a parasite of Galeorhinus galeus (Triakidae) from the Argentine coast

Parasite, 2002
Anthobothrium galeorhinin. sp. (Eucestoda: Phyllobothriidae) collected from the spiral intestine of Galeorhinus galeus (Linnaeus, 1758) at the Puerto Madryn (Atlantic coastal region) is described. The new species differs from A.
Suriano D. M.
doaj   +1 more source

New findings into the genetic population structure of two commercially valuable and threatened sharks, Mustelus mustelus (Linnaeus, 1758) and M. punctulatus (Risso, 1827), allow refining management strategy in the Central Mediterranean Sea

Frontiers in Marine Science
Elasmobranch species are the direct or accidental catch of fisheries and can have a commercial importance. In the Mediterranean Sea, a long-term period of overfishing brought several demersal elasmobranchs to be depleted and threatened by extinction, due
Matteo Barbato, Matteo Barbato, Matteo Barbato, Sara Bonanomi, Sara Bonanomi, Diego Borme, Ilija Ćetković, Francesco Colloca, Manfredi Di Lorenzo, Manfredi Di Lorenzo, Ilaria A. M. Marino, Ilaria A. M. Marino, Carlotta Mazzoldi, Carlotta Mazzoldi, Carlotta Mazzoldi, Ana Pešić, Antonello Sala, Lorenzo Zane, Lorenzo Zane, Lorenzo Zane, Massimo Mezzavilla   +20 more
doaj   +1 more source

An exceptionally preserved Eocene shark and the rise of modern predator–prey interactions in the coral reef food web

Zoological Letters, 2016
Background Following extreme climatic warming events, Eocene Lagerstätten document aquatic and terrestrial vertebrate faunas surprisingly similar to modern counterparts.
Federico Fanti, Daniela Minelli, Gabriele Larocca Conte, Tetsuto Miyashita   +3 more
doaj   +1 more source

Diving behaviour of the critically endangered tope shark Galeorhinus galeus in the Natural Reserve of Bahia San Blas, northern Patagonia [PDF]

, 2014
Background:Tope sharks (Galeorhinus galeus) aggregate in large numbers during spring and summer in closedgulfs and bays in northern Patagonia; these locations are considered the main nursery areas for the species.However, little is known about the ...
Cuevas, Juan Martín, Di Giacomo, Edgardo Ernesto, Garcia, Mirta Lidia   +2 more
core   +2 more sources

The Unseen Crisis of Sharks and Rays in Senegal

Ecology and Evolution, Volume 16, Issue 4, April 2026.
This study presents a conservative quantitative assessment of shark and ray landings and trade in Senegal, revealing extensive exploitation of threatened species. Surveys at two major artisanal processing sites in the Casamance region recorded over 170,000 individuals, mostly rays, with nearly all biomass comprising species at risk of extinction, and ...
Rima W. Jabado, Luc Badji, Ryan Charles, Christoph A. Rohner   +3 more
wiley   +1 more source

Revealing elasmobranch diversity across the Cretaceous-Paleogene boundary in the Central Tethys (Byala, Bulgaria) [PDF]

Fossil Record
Extensive bulk-sampling of the continuous K-Pg succession at Byala (Central Tethys) provides high-resolution insights into elasmobranch responses to the end-Cretaceous mass extinction of a deep-marine environmental setting. The studied section represents
Iris Feichtinger, Bernhard Beaury, Guillaume Guinot, Mathias Harzhauser, Thomas Nichterl, Kristalina Stoykova, Jürgen Pollerspöck   +6 more
doaj   +3 more sources

Length–Weight and Condition Factor of 14 Elasmobranch Species Caught as Bycatch by Artisanal Shrimp Trawls in a Coastal Lagoon System From Northwest Mexico

Journal of Applied Ichthyology, Volume 2026, Issue 1, 2026.
The lack of biometric data on chondrichthyan species has impeded the implementation of management strategies essential for the conservation of sharks and rays captured using different fishing gears in coastal ecosystems. This study aims to assess morphometric relationships (length–weight [LW], length–dorsal length [DL], and length–disc width [DW]) and ...
Adrián Felipe González-Acosta, Carlos Hiram Rábago-Quiroz, Gorgonio Ruiz-Campos, Juan Antonio García-Borbón, María del Carmen Alejo-Plata, Joaquín David Magaña, Upali S. Amarasinghe   +6 more
wiley   +1 more source