Results 21 to 30 of about 1,859 (226)

Threatened fish species in the Northeast Atlantic are functionally rare

Global Ecology and Biogeography, Volume 32, Issue 10, Page 1827-1845, October 2023., 2023
Abstract Aim The criteria used to define the International Union for Conservation of Nature (IUCN) Red List categories are essentially based on demographic parameters at the species level, but they do not integrate species' traits or their roles in ecosystems.
Noémie Coulon, Martin Lindegren, Eric Goberville, Aurèle Toussaint, Aurore Receveur, Arnaud Auber   +5 more
wiley   +1 more source

A holistic and comprehensive data approach validates the distribution of the critically endangered flapper skate (Dipturus intermedius)

Journal of Fish Biology, Volume 103, Issue 3, Page 516-528, September 2023., 2023
Abstract Morphological similarities between skates of the genus Dipturus in the north‐eastern Atlantic and Mediterranean have resulted in longstanding confusion, misidentification and misreporting. Current evidence indicates that the common skate is best explained as two species, the flapper skate (Dipturus intermedius) and the common blue skate (D ...
Amy Garbett, Sophie L. Loca, Thomas Barreau, Manuel Biscoito, Caroline Bradley, Joe Breen, Maurice Clarke, Jim R. Ellis, Andrew M. Griffiths, Gary Hannon, Klara Jakobsdóttir, Claudia Junge, Arve Lynghammar, Matthew McCloskey, George Minos, Natasha D. Phillips, Paulo A. Prodöhl, William Roche, Samuel P. Iglésias, James Thorburn, Patrick C. Collins   +20 more
wiley   +1 more source

First record of partial albinism in the critically endangered Angelshark (Squatina squatina) (Linnaeus, 1758)

Journal of Fish Biology, Volume 103, Issue 2, Page 439-442, August 2023., 2023
Abstract We report the first case of partial albinism in the Critically Endangered angelshark, Squatina squatina. The encounter with this specimen took place while SCUBA diving on the beach of Tufia, located on the east coast of the island of Gran Canaria on 2 April 2021.
David Jimenez‐Alvarado, Eva Meyers, Airam Guerra‐Marrero, Ana Espino‐Ruano, Lorena Couce‐Montero, Joanna Barker, Michael Sealey, Héctor Toledo, Belén Caro, Charlotte Pike, David M.P. Jacoby, Lucy Mead, José J. Castro   +12 more
wiley   +1 more source

Food habits of the broad nose skate, Bathyraja brachyurops (Chondrichthyes, Rajidae), in the south-west Atlantic

Scientia Marina, 2008
Food habits of Bathyraja brachyurops were studied based on stomach content analyses of 346 specimens collected from research cruises carried out from 2003 to 2005 on the Argentinean continental shelf (36ºS-55ºS). A total of 265 stomachs (76.6%) contained
Mauro Belleggia, Ezequiel Mabragaña, Daniel E. Figueroa, Lorena B. Scenna, Santiago A. Barbini, Juan M. Díaz de Astarloa   +5 more
doaj   +1 more source

Twenty-First-Century Environmental Change Decreases Habitat Overlap of Antarctic Toothfish (Dissostichus mawsoni) and Its Prey. [PDF]

Glob Chang Biol
Antarctic toothfish are a commercially exploited upper‐level predator in the Southern Ocean, but knowledge on how Antarctic toothfish and its prey respond to environmental change remains incomplete. In this study, we employ the extended aerobic growth index to quantify changes in predator–prey viable habitat overlap in response to changes in ...
Nissen C, Caccavo JA, Morée AL.
europepmc   +2 more sources

Seamount coral reefs are egg case nurseries for deep‐sea skates

Journal of Fish Biology, Volume 102, Issue 6, Page 1455-1469, June 2023., 2023
Abstract Egg case nurseries of the boreal skate (Amblyraja hyperborea) and Richardson's skate (Bathyraja richardsoni) were defined and mapped on a bathyal seascape (c. 500–1900 m depths) south of Tasmania, Australia, using 99 towed‐camera transects (157 linear km; N = 50,858 images).
Kylie Maguire, Helen O'Neill, Franziska Althaus, William White, Alan Williams   +4 more
wiley   +1 more source

Diving into the diet of provisioned smooth stingrays using stable isotope analysis

Journal of Fish Biology, Volume 102, Issue 5, Page 1206-1218, May 2023., 2023
Abstract Recreational fishing waste, produced from processing catches at shore‐based fish cleaning facilities and discarded into adjacent waters, is foraged by various aquatic species. However, the potential alterations to the diet of consumers of these resources are poorly studied.
Joni Pini‐Fitzsimmons, Vincent Raoult, Troy Gaston, Nathan A. Knott, Culum Brown   +4 more
wiley   +1 more source

New species of Rockacestus (Cestoda, Phyllobothriidea) from skates of the genus Bathyraja (Rajiformes, Arhynchobatidae) in the Southwestern Atlantic Ocean with comments on the distribution of the genus [PDF]

Zoosystematics and Evolution
Three new species of Rockacestus Caira, Bueno & Jensen, 2021 were recovered from arhynchobatid skates taken between 37°S–55°S in the Magellanic Province, Southwestern Atlantic Ocean. Rockacestus blasi sp. nov.
Guillermina García Facal, Verónica A. Ivanov, Adriana Menoret   +2 more
doaj   +3 more sources

First report of an egg nursery for the Critically Endangered flapper skate Dipturus intermedius (Rajiformes: Rajidae)

Aquatic Conservation: Marine and Freshwater Ecosystems, Volume 32, Issue 10, Page 1647-1659, October 2022., 2022
Abstract This study provides the first report of an egg nursery for the Critically Endangered flapper skate Dipturus intermedius and a description of the habitat, thus contributing towards our understanding of essential habitats for the species. In total, 1,395 flapper skate egg cases were recorded (accounting for overlapping surveys) in two egg case ...
Jane Dodd, John M. Baxter, David W. Donnan, Benjamin D. James, Edward Lavender, Claire A. McSorley, Andrew O.M. Mogg, James A. Thorburn   +7 more
wiley   +1 more source

Early life sensory ability—ventilatory responses of thornback ray embryos (Raja clavata) to predator-type electric fields [PDF]

, 2015
Predator avoidance is fundamental for survival and it can be particularly challenging for prey animals if physical movement away from a predatory threat is restricted. Many sharks and rays begin life within an egg capsule that is attached to the sea bed.
Ballard, Bedore, Bigelow, Bodznick, Clark, Cousseau, Cox, Dulvy, Dulvy, Evans, Foulley, Freitas, Gannon, Giguère, Gill, Herskin, Hoff, Kempster, Kimber, Leonard, Long, Lucifora, Luer, Martin, Moore, Oulton, Peters, Post, Richards, Semeniuk, Semeniuk, Sih, Sisneros, Thomason, Tricas, Venables, Warkentin, Warkentin   +37 more
core   +1 more source