Comparison between environmental characteristics of larval bluefin tuna Thunnus thynnus habitat in the Gulf of Mexico and western Mediterranean Sea

2013 ◽  
Vol 486 ◽  
pp. 257-276 ◽  
Author(s):  
BA Muhling ◽  
P Reglero ◽  
L Ciannelli ◽  
D Alvarez-Berastegui ◽  
F Alemany ◽  
...  
Keyword(s):  
Gulf Of Mexico ◽  
Mediterranean Sea ◽  
Bluefin Tuna ◽  
Western Mediterranean ◽  
Thunnus Thynnus ◽  
Environmental Characteristics ◽  
Western Mediterranean Sea

scholarly journals Assessment of spawning of Atlantic bluefin tuna farmed in the western Mediterranean Sea

2016 ◽  
Vol 8 ◽  
pp. 89-98 ◽  
Author(s):  
A Medina ◽  
G Aranda ◽  
S Gherardi ◽  
A Santos ◽  
B Mèlich ◽  
...  
Keyword(s):  
Mediterranean Sea ◽  
Bluefin Tuna ◽  
Western Mediterranean ◽  
Atlantic Bluefin Tuna ◽  
Western Mediterranean Sea

scholarly journals Migration, residency, and homing of bluefin tuna in the western Mediterranean Sea

2013 ◽  
Vol 71 (3) ◽  
pp. 510-518 ◽  
Author(s):  
Jean-Marc Fromentin ◽  
Daniel Lopuszanski
Keyword(s):  
Mediterranean Sea ◽  
Spatial Dynamics ◽  
Bluefin Tuna ◽  
Western Mediterranean ◽  
Careful Consideration ◽  
Mediterranean Coast ◽  
Central Mediterranean ◽  
The North ◽  
Western Mediterranean Sea ◽  
Local Enrichment

Abstract This study presents the results of an electronic tagging programme on mature Atlantic bluefin tuna (ABFT) that has been conducted since 2007 offshore of the French Mediterranean Coast. The spatial distributions of ABFT showed little year-to-year variation and the fish concentrated in a small area of the central northwestern Mediterranean, where they may stay for several months. The individual tracks display sinuous trajectories in this area, indicating the possibility of feeding behaviour. No fish went out to the North Atlantic, but several fish displayed some migration to the southern western Mediterranean Sea during winter and the central Mediterranean during the spawning season. The homing behaviour of one fish after a full year as well as the back and forth of several fish further indicates that this restricted feeding area is probably persistent from year to year. We hypothesize that this area could result from local enrichment due to permanent mesoscale oceanographic features related to the North Mediterranean Current and the North Balearic front. The option of a spatial management, through marine protected areas, for a highly migratory species, such as ABFT, thus deserves more careful consideration because those species displayed complex spatial dynamics (e.g. homing), and population structure (e.g. several subpopulations of different sizes).

Direct ageing of Thunnus thynnus from the eastern Atlantic Ocean and western Mediterranean Sea using dorsal fin spines

2014 ◽  
Vol 84 (6) ◽  
pp. 1876-1903 ◽  
Author(s):  
P. L. Luque ◽  
E. Rodriguez-Marin ◽  
J. Landa ◽  
M. Ruiz ◽  
P. Quelle ◽  
...  
Keyword(s):  
Atlantic Ocean ◽  
Mediterranean Sea ◽  
Western Mediterranean ◽  
Thunnus Thynnus ◽  
Dorsal Fin ◽  
Western Mediterranean Sea ◽  
Eastern Atlantic Ocean ◽  
Fin Spines

High Seas Fisheries

Overfishing ◽  
2012 ◽  
Author(s):  
Ray Hilborn ◽  
Ulrike Hilborn
Keyword(s):  
Shallow Water ◽  
Mediterranean Sea ◽  
Bluefin Tuna ◽  
Western Mediterranean ◽  
Western Mediterranean Sea ◽  
The Status ◽  
High Seas

What is the status of bluefin tuna that were proposed for CITES listing? Throughout the western Mediterranean Sea, an annual ritual known in Sicily as matanza has taken place for perhaps 400 years. Nets are set in shallow water near the shore...

scholarly journals Investigating the Formation of Submesoscale Structures along Mesoscale Fronts and Estimating Kinematic Quantities Using Lagrangian Drifters

Fluids ◽  
2020 ◽  
Vol 5 (3) ◽  
pp. 159 ◽  
Author(s):  
John Lodise ◽  
Tamay Özgökmen ◽  
Rafael C. Gonçalves ◽  
Mohamed Iskandarani ◽  
Björn Lund ◽  
...  
Keyword(s):  
Gulf Of Mexico ◽  
Mediterranean Sea ◽  
Critical Role ◽  
Western Mediterranean ◽  
Vertical Transport ◽  
Surface Ocean ◽  
Western Mediterranean Sea ◽  
Lagrangian Drifters ◽  
Velocity Gradients ◽  
Novel Method

Much of the vertical transport near the surface of the ocean, which plays a critical role in the transport of dissolved nutrients and gases, is thought to be associated with ageostrophic submesoscale phenomena. Vertical velocities are challenging not only to model accurately, but also to measure because of how difficult they are to locate in the surface waters of the ocean. Using unique massive drifter releases during the Lagrangian Submesoscale Experiment (LASER) campaign in the Gulf of Mexico and the Coherent Lagrangian Pathways from the Surface Ocean to the Interior (CALYPSO) experiment in the Mediterranean Sea, we investigate the generation of submesoscale structures along two different mesoscale fronts. We use a novel method to project Lagrangian trajectories to Eulerian velocity fields, in order to calculate horizontal velocity gradients at the surface, which are used as a proxy for vertical transport. The velocity reconstruction uses a squared-exponential covariance function, which characterizes velocity correlations in horizontal space and time, and determines the scales of variation using the data itself. SST and towed CTD measurements support the findings revealed by the drifter data. Due to the production of a submesoscale instability eddy in the Gulf of Mexico, convergence magnitudes of up to ∼20 times the planetary vorticity, f, are observed, the value of which is almost 3 times larger than that found in the mesoscale dominated Western Mediterranean Sea.

Evaluation of Atlantic bluefin tuna reproductive potential in the western Mediterranean Sea

2013 ◽  
Vol 76 ◽  
pp. 154-160 ◽  
Author(s):  
Guillermo Aranda ◽  
Antonio Medina ◽  
Agustín Santos ◽  
Francisco J. Abascal ◽  
Txema Galaz
Keyword(s):  
Mediterranean Sea ◽  
Reproductive Potential ◽  
Bluefin Tuna ◽  
Western Mediterranean ◽  
Atlantic Bluefin Tuna ◽  
Western Mediterranean Sea
Sign in / Sign up

Export Citation Format

Share Document