Results 11 to 20 of about 10,713 (177)

Near resonance acoustic scattering from organized schools of juvenile Atlantic bluefin tuna (Thunnus thynnus) [PDF]

, 2013
Schools of Atlantic bluefin tuna (Thunnus thynnus) can exhibit highly organized spatial structure within the school. This structure was quantified for dome shaped schools using both aerial imagery collected from a commercial spotter plane and 400 kHz ...
Lutcavage, Molly, Schroth-Miller, Madeline L, Weber, Thomas C.   +2 more
core   +3 more sources

Trophic impact of Atlantic bluefin tuna migrations in the North Sea [PDF]

, 2017
Large highly migratory predators can have major impacts on local marine ecosystems by reducing prey populations and leading to trophic cascades that affect the entire fish community.
Andersen, Ken Haste, Lindegren, Martin, MacKenzie, Brian, Mariani, Patrizio   +3 more
core   +1 more source

Optimal Management of the Northern Atlantic Bluefin Tuna [PDF]

Marine Resource Economics, 2002
This paper analyzes the optimal management of the Northern Atlantic bluefin tuna, both eastern and western stocks. The analysis is based on a deterministic multi-gear and age-structured bioeconomic model. In order to assess the importance of the gear structure in this fishery, the model is optimized in two scenarios.
PEDRO PINTASSILGO, CLARA COSTA DUARTE
openaire   +1 more source

Trophic ecology of Atlantic bluefin tuna Thunnus thynnus larvae

Journal of Fish Biology, 2011
Feeding intensity, diet composition, selectivity, energy ingestion and dietary niche breadth of larval Atlantic bluefin tuna Thunnus thynnus were studied on the eastern (Mediterranean) spawning grounds of the species. Larval T. thynnus were collected in the Balearic Archipelago (north‐west Mediterranean Sea) during 2004 and 2005 using surveys specific ...
Catalán, I.A. (Ignacio Alberto), Tejedor, A. (Alberto), Alemany, F. (Francisco), Reglero, P. (Patricia)   +3 more
openaire   +4 more sources

West Atlantic bluefin tuna Virtual Population Analysis [PDF]

, 2021
Este informe documenta la evaluación de 2021 del atún rojo del Atlántico oeste en la que se utilizó un análisis de población virtual. El Grupo de especies de atún rojo del SCRS revisó las entradas de datos de la evaluación y el plan de trabajo a través de un seminario web durante los días 5 a 13 de abril de 2021.
Lauretta, M., Kimoto, A., Rouyer, Tristan, Ortiz, M., Walter, J.   +4 more
openaire  

Conserving Atlantic Bluefin Tuna with Spawning Sanctuaries [PDF]

, 2010
Recent population assessments indicate that Atlantic bluefin tuna populations in both the western and eastern Atlantic need increased protection to rebuild their depleted populations, yet current management measures are not working.

core  

Isolation, Insularity and Resilience: A Review of the Geophysical, Socioeconomic, and Environmental Vulnerabilities of Gran Canaria and Lesvos Islands for Policy Interventions to Global Change

Sustainable Development, EarlyView.
ABSTRACT The dynamic nature of small islands being geographically isolated and their perceived connectedness with global networks complicates research attempts to draw general conclusions on whether insularity leads to marginalization or strengthens their resilience for sustainable development.
Toheeb Lekan Jolaosho, Mazen Marouani, Takwa Boughanmi   +2 more
wiley   +1 more source

Decline in condition of northern bluefin tuna (Thunnus thynnus) in the Gulf of Maine [PDF]

, 2007
The northern bluefin tuna (Thunnus thynnus) is a highly mobile apex predator in the Gulf of Maine. Despite current stock assessments that indicate historically high abundance of its main prey, Atlantic herring (Clupea harengus), commercial fishermen have
Campbell , Robert, Cooper, Andrew B., Golet, Walter J., Lutcavage, Molly   +3 more
core  

The effect of a 24-hour photoperiod on the survival, growth and swim bladder inflation of pre-flexion yellowfin tuna (Thunnus albacares) larvae [PDF]

, 2011
The effects of two different continuous photoperiod regimes on survival, growth and swim bladder inflation of pre-flexion yellowfin tuna (Thunnus albacares) larvae were investigated. Each photoperiod regime was tested twice with a different larval cohort
A. McIntyre, B. Chen, Barahona-Fernandes, Barlow, Blaxter, Boeuf, D.D. Benetti, Dowd, Downing, Duray, FAO, Farwell, Fielder, Fielder, Fuchs, Fyhn, G.J. Partridge, Harboe, Hart, Hutchinson, Ishibashi, J. Hutapea, J.D. Stieglitz, Kimura, Koven, Lioka, Margulies, Miyake, Moustakas, Munday, Mylonas, Normile, Puvanendran, Ronzani Cerqueira, Safina, Sawada, Takashi, Tandler, Trotter, Utne-Palm, V.P. Scholey, W. Hutchinson, Wexler, Williams   +43 more
core   +2 more sources

Post‐Release Survival of the Pelagic Stingray (Pteroplatytrygon violacea, Bonaparte, 1832) in French Longline Fisheries in the Northwestern Mediterranean Sea

Fisheries Management and Ecology, EarlyView.
ABSTRACT Bycatch remains a critical challenge in global fisheries, even when using selective gears such as longlines. In the French longline fishery targeting Atlantic bluefin tuna (Thunnus thynnus) in the Gulf of Lion, the common pelagic stingray (Pteroplatytrygon violacea) is the primary bycatch species.
Antoine Landreau, Vincent Kerzérho, Olivier Derridj, Bertrand Wendling, Nolwenn Cosnard, Tristan Rouyer   +5 more
wiley   +1 more source