Results 21 to 30 of about 1,585 (194)

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

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

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

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

Reproductive biology of the eyespot skate atlantoraja cyclophora (Elasmobranchii: Arhynchobatidae) an endemic species of the southwestern atlantic ocean (34ºs - 42ºS) [PDF]

, 2018
Atlantoraja cyclophora is an endemic skate to the continental shelf of the Southwestern Atlantic Ocean (22ºS-47ºS) and a bycatch species in commercial bottom trawl fisheries. The morphometric relationships, the size at maturity and the reproductive cycle
Colonello, Jorge Horacio, Galíndez, Elena Juana, Macchi, Gustavo Javier, Wehitt, Anahi   +3 more
core   +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

MORPHOLOGICAL DESCRIPTION AND BIOLOGY OF WHITEBROW SKATE BATHYRAJA MINISPINOSA FROM THE NORTH-WEST PACIFIC

Известия ТИНРО, 2019
Morphological description is given for whitebrow skate Bathyraja minispinosa caught in the northwestern Pacific in 1978–1989, both juveniles and adults. Counts for vertebras, pectoral fin, teeth rows, and intestinal valves are presented.
V. N. Dolganov
doaj   +1 more source

From coexistence to competitive exclusion: can overfishing change the outcome of competition in skates (Chondrichthyes, Rajidae)?

Latin American Journal of Aquatic Research, 2012
Competition for food could be a major force driving changes in the community structure of skates (Rajidae) subjected to fishing exploitation. Under this hypothesis, small skates are released from competition with larger skates after fishing has depleted ...
Natalia L Ruocco, Luis O Lucifora, Juan M Díaz de Astarloa, Roberto C Menni, Ezequiel Mabragaña, Diego A Giberto   +5 more
doaj   +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