@article{fdi:010061775,
  title = {{O}ceanographic changes and exploitation drive the spatio-temporal dynamics of {A}tlantic bluefin tuna ({T}hunnus thynnus)},
  author = {{F}romentin, {J}. {M}. and {R}eygondeau, {G}abriel and {B}onhommeau, {S}. and {B}eaugrand, {G}.},
  editor = {},
  language = {{ENG}},
  abstract = {{A}tlantic bluefin tuna ({ABFT}) has always displayed spectacular changes in its spatial distribution, but the underlying mechanism of such variations still remains obscure. {T}his study focuses on this challenging issue by scrutinizing the intriguing {B}razilian episode' during which a large quantity of {ABFT} (a temperate species) was caught during the 1960s in the equatorial {A}tlantic. {T}o investigate this event, we applied a niche model to an extensive data set of catch and environmental variables from 1960 to 2009. {ABFT} exhibited a remarkably large ecological niche, which matches well with our current knowledge of {ABFT}. {O}ur results also depicted a high probability of {ABFT} occurrence in the {S}outh {A}tlantic and, more interestingly, favorable environmental conditions in the western equatorial {A}tlantic during the 1960s, but not later. {ABFT} could thus have migrated from their northern spawning grounds to the {S}outh {A}tlantic during the 1960s through the western equatorial {A}tlantic, playing the role of an ecological bridge'. {W}e argue that the rarity of {ABFT} in the southern {A}tlantic during the last four decades would result from the interaction of several processes, particularly oceanographic conditions, migratory behavior, density-dependence, exploitation levels and population structure. {E}xamination of the catch data further indicated that the fish caught in the equatorial {A}tlantic were from the western stock and we concluded that the lack of rebuilding of this stock could result from a regime shift due to the combination of oceanographic changes in the equatorial {A}tlantic and overfishing in the {N}orth {A}tlantic in the 1960s and 1970s.},
  keywords = {ecological niche model ; longline fisheries ; migration ; synergistic effects ; {T}hunnus thynnus ; time series ; {ATLANTIQUE}},
  booktitle = {},
  journal = {{F}isheries {O}ceanography},
  volume = {23},
  numero = {2},
  pages = {147--156},
  ISSN = {1054-6006},
  year = {2014},
  DOI = {10.1111/fog.12050},
  URL = {https://www.documentation.ird.fr/hor/fdi:010061775},
}