Results 31 to 40 of about 3,259 (192)

Diet of the rasptail skate, Rostroraja velezi (Rajiformes: Rajidae), off Piura, Peru

Ciencias Marinas, 2021
Batoids are among the least studied group of vertebrates and one of the most vulnerable to fishing. The rasptail skate, Rostroraja velezi, is a bycatch species in northern Peru for which there are no studies on its diet.
Pamela Molina-Salgado, Joanna Alfaro-Shigueto, Adriana González-Pestana   +2 more
doaj   +1 more source

Feeding ecology of elasmobranch species in southeastern Brazil

Neotropical Ichthyology, 2017
The feeding ecology of five elasmobranch species was studied on the southern coast of Rio de Janeiro, southwestern Atlantic Ocean. The specimens were caught with a trawl or bottom longline between January 2006 and August 2007.
Alessandra F. Viana, Jean L. Valentin, Marcelo Vianna   +2 more
doaj   +1 more source

Effects of hypoxia on benthic macrofauna and bioturbation in the Estuary and Gulf of St. Lawrence, Canada [PDF]

, 2010
The bottom water in the 4300 m deep Lower St. Lawrence Estuary (LSLE) is persistently hypoxic in contrast to the normoxic bottom waters in the Gulf of St. Lawrence (GSL). We photographed the seabed at 11 stations in the Estuary and Gulf of St.
Archambault, Philippe, Belley, Rénald, Gagnon, Jean-Marc, Gilbert, Franck, Sundby, Bjorn   +4 more
core   +4 more sources

Rajidae

Известия ТИНРО (Тихоокеанского научно-исследовательского рыбохозяйственного центра), 2007
Published as part of David A. Ebert & Chante D. Davis, 2007, Descriptions of skate egg cases (Chondrichthyes: Rajiformes: Rajoidei) from the eastern North Pacific., pp.
David A. Ebert, Chante D. Davis
openaire   +3 more sources

Acanthobothrium minus n. sp. (Tetraphyllidea : Onchobotriidae) parasite de Raja asterias (Elasmobranchii : Rajidae) en Méditerranée

Parasite, 2009
Parmi les Cestodes Tetraphyllidea parasites de la valvule spirale de Raja asterias Delaroche pêchées sur les côtes de l’Algérie, nous avons récolté un Onchobothriidae du genre Acanthobothrium différent des Acanthobothrium signalés chez les Rajidae de la ...
Tazerouti F., Kechemir-Issad N., Euzet L.   +2 more
doaj   +1 more source

The role of sand lances (Ammodytes sp.) in the Northwest Atlantic ecosystem: a synthesis of current knowledge with implications for conservation and management [PDF]

, 2020
© The Author(s), 2020. This article is distributed under the terms of the Creative Commons Attribution License. The definitive version was published in Staudinger, M. D., Goyert, H., Suca, J. J., Coleman, K., Welch, L., Llopiz, J.
Altman, Irit, Applegate, Andew, Auster, Peter J., Baumann, Hannes, Beaty, Julia, Boelke, Deirdre, Coleman, Kaycee, Goyert, Holly, Kaufman, Les, Llopiz, Joel K., Loring, Pam, Moxley, Jerry, Paton, Suzanne, Powers, Kevin, Richardson, David E., Robbins, Jooke, Runge, Jeffrey A., Smith, Brian, Spiegel, Caleb, Staudinger, Michelle D., Steinmetz, Halley, Suca, Justin J., Welch, Linda, Wiley, David N.   +23 more
core   +1 more source

Contribuição ao conhecimento da fauna de peixes do litoral norte do estado de São Paulo A contribution to the acquirement of the fish fauna from the northern littoral of state of São Paulo

Brazilian Journal of Oceanography, 1983
Na execução de um programa de levantamento das faunas demersal e epibentônica da plataforma do litoral norte do Estado de São Paulo, foram tomadas, em um período de dois anos, 28 amostras da fauna de fundo, utilizando-se redes tipo ottertrawl abrangendo ...
Edmundo Ferraz Nonato, A. Cecília Z Amaral, José Lima Figueiredo   +2 more
doaj   +1 more source

Shearing Tooth Morphology May Allow Sharks to Access Higher Trophic Levels at Smaller Sizes. [PDF]

Ecol Evol
Predator morphology imposes limitations on prey selection due to biomechanical constraints, making some prey functionally inaccessible and thereby constraining predator trophic niches. We assessed how two key components of trophic morphology—tooth shape and body size—affect prey selectivity and trophic niche in two sympatric sharks with contrasting ...
Riverón S, Raoult V, Slip DJ, Mas F, Laporta M, Pereyra I, Silveira S, Harcourt RG.   +7 more
europepmc   +2 more sources

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

Some reproductive aspects of cartilaginous fish Raja clavataL., 1758(Elasmobranchii: Rajidae) from Syrian coast

المجلة العراقية للاستزراع المائي, 2021
This study was performed on Thornback ray (Raja clavata L., 1758) through the period January 2013 - October 2014. It aimed to determine the reproductive cycle , fecundity and to determine median disc width at maturity (DW50 ) of this species.
Adib Saad, Asaad Amin, Hasan H. Alkusairy, Waad J. Sabour   +3 more
doaj   +1 more source