Results 71 to 80 of about 17,250 (288)

Behavioral Evidence of Predator–Predator Commensalism: Cobia Track and Feed on Prey Disturbed by Southern Stingrays

Ethology, EarlyView.
We documented a novel predator–predator commensal foraging interaction between cobia (Rachycentron canadum) and a southern stingray (Hypanus americanus) in a shallow coastal habitat of Biscayne Bay, Florida. Using drone‐based observations, we recorded a 7‐min sequence in which a cobia closely tracked the stingray's movements and fed on prey disturbed ...
Julia Saltzman, John Hlavin, Christine Martin, Emily A. Yeager, Catherine C. Macdonald   +4 more
wiley   +1 more source

The status of shark and ray fishery resources in the Gulf of California: applied research to improve management and conservation [PDF]

, 2009
Seasonal surveys were conducted during 1998–1999 in Baja California, Baja California Sur, Sonora, and Sinaloa to determine the extent and activities of artisanal elasmobranch fisheries in the Gulf of California. One hundred and forty–seven fishing sites,
Bizzarro, Joseph J., Cailliet, Gregor M., Castillo–Géniz, J. Leonardo, Hueter, Robert E., Márquez– Farías, J. Fernando, Smith, Wade D., Tyminski, John, Villavicencio–Garayzar, Carlos J.   +7 more
core  

Soft-bottom fishes and spatial protection: findings from a temperate marine protected area [PDF]

, 2018
Numerous studies over the last decades have focused on marine protected areas (MPAs) and their effects on fish communities. However, there is a knowledge gap regarding how species that live associated with soft-substrates (e.g., sand, mud) respond to ...
Abecasis, Anderson, Andrade, Ashworth, Audzijonyte, Bergseth, Blyth-Skyrme, Breslow, Bruce, Byers, Campbell, Chapman, Claudet, Claudet, Claudet, Claudet, Claudet, Cunha, Denney, Denny, De’Ath, Di Franco, Dimech, Donovan, Dufrêne, Eddy, Ellis, Erzini, Erzini, Fisher, Fréon, Gaines, García-Charton, García-Charton, Gell, Giakoumi, Gonçalves, Gonçalves, Grüss, Guidetti, Guidetti, Halpern, Halpern, Henriques, Henriques, Horta e Costa, Horta e Costa, Hunter, Hunter, Hutchings, Iannibelli, IUCN, Jennings, Legendre, Lester, Lima, Lubchenco, Micheli, Murawski, Myers, Oksanen, Osenberg, Pais, Pauly, Payton, Piet, Pipitone, R Core Team, Roberts, Roberts, Ross, Russ, Sala, Sciberras, Sciberras, Silva, Slatyer, Tetreault, Therneau, Underwood, Underwood, Vasconcelos, Villegas-Ríos, Vinagre, Vincent, Watson, Wiegand, Wilson, Zuur   +88 more
core   +5 more sources

A Conceptual Framework and Methods for Studying the Connectivity of Fishes

Fish and Fisheries, EarlyView.
ABSTRACT Connectivity is a multifaceted concept that has important implications for the management and conservation of marine and freshwater fishes. We developed a conceptual framework that encompasses multiple, interrelated categories of connectedness, including landscape (e.g., structural, functional) connectivity and ecological (e.g., trophic ...
Jordanna N. Bergman, Jessica A. Robichaud, Jasper McCutcheon, Michael T. Booth, Brendan Campbell, Grace A. Casselberry, Cienna R. Cooper, Bronwyn M. Gillanders, Lucas P. Griffin, Edward Hale, Luc LaRochelle, Karen J. Murchie, Mary Peacock, Reid G. Swanson, Simon D. Stewart, Ryan. J. Woodland, Daniel P. Zielinski, Steven J. Cooke, Morgan L. Piczak   +18 more
wiley   +1 more source

First report of recurrent parthenogenesis as an adaptive reproductive strategy in the endangered common smooth-hound shark Mustelus mustelus

Scientific Reports
Parthenogenesis, or virgin birth, describes a mode of reproduction where an egg develops into an offspring without fertilization, and is observed across various vertebrate taxa, excluding mammals.
Giuseppe Esposito, Arianna Meletiadis, Simona Sciuto, Marino Prearo, Flavio Gagliardi, Ilaria Corrias, Angela Pira, Alessandro Dondo, Paolo Briguglio, Claudio Ghittino, Daniele Dedola, Elena Bozzetta, Pier Luigi Acutis, Paolo Pastorino, Silvia Colussi   +14 more
doaj   +1 more source

Sexual dimorphisms in the dermal denticles of thelesser-spotted catshark, Scyliorhinus canicula (Linnaeus, 1758) [PDF]

, 2013
The dermal layers of several elasmobranch species have been shown to be sexually dimorphic. Generally, when this occurs the females have thicker dermal layers compared to those of males. This sexual dimorphism has been suggested to occur as a response to
Adrian C Love, Colin P Waring, Lucy Babey, Neil Crooks, William J Haddon   +4 more
core   +2 more sources

Ecosystem Impacts of the Landing Obligation for Unwanted Catch in Thermaikos Gulf (Greece)

Fisheries Management and Ecology, EarlyView.
ABSTRACT Discards by marine commercial fisheries have been an issue of major concern to the scientific community in recent years. We modeled the ecological and trophic consequences of a mandatory landing obligation (LO) regulated by the reformed Common Fisheries Policy [Regulation (EU) 1380/2013] on the Thermaikos Gulf ecosystem (northwestern Aegean ...
Ioannis Keramidas, Donna Dimarchopoulou, Ioanna Argyrou, Athanassios C. Tsikliras   +3 more
wiley   +1 more source

Descriptive and spatial analysis of bycatch in tuna purse-seine fishery in the colombian Pacific Ocean, with an elasmobranch approach

Ocean and Coastal Research
Bycatch species are as important as target species in the challenge of comprehensive fishery management. This is especially the case for vulnerable species such as elasmobranchs in offshore areas of the Colombian Pacific Ocean (CPO), for which ...
Vladimir Puentes, Dalia C. Barragán-Barrera, Karina Bohrer Do Amaral, Fabian D. Escobar, Luis A. Zapata, Emiliano Zambrano, Carlos G. Barreto, José Tavera, Carlos J. Polo, Jairo Altama, Angelica S. Moreno, Iván F. Benavides   +11 more
doaj   +1 more source

Age validation, growth, mortality, and demographic modeling of spotted gully shark (Triakis megalopterus) from the southeast coast of South Africa [PDF]

, 2011
This study documents validation of vertebral band-pair formation in spotted gully shark (Triakis megalopterus) with the use of fluorochrome injection and tagging of captive and wild sharks over a 21-year period.
Booth, Anthony J., Foulis, Alan J., Smale, Malcolm J.   +2 more
core   +1 more source

Discard Survival of Thornback Ray (Raja clavata), Undulate Ray (Raja undulata) and Small‐Eyed Ray (Raja microocellata) in Northeast Atlantic Inshore Fisheries

Fisheries Management and Ecology, EarlyView.
ABSTRACT Quantifying discard survival of species is crucial for effective fishery management. Electronic tags and visual health assessments were used to estimate postrelease survival of commercially caught thornback ray (Raja clavata), undulate ray (Raja undulata) and small‐eyed ray (Raja microocellata) from Northeast Atlantic inshore fisheries ...
Serena R. Wright, Ana Ribeiro Santos, Ruth Hicks, Peter Randall, Joana Silva, Victoria Bendall, Thomas Catchpole   +6 more
wiley   +1 more source