C. Assan, SFA) was instrumental in data processing This work was financed by the European Data Collection Framework (DCF, 2008.

E. Chassot, P. Dewals, L. Floch, V. Lucas, M. Morales-vargas et al., Analysis of the effects of Somali piracy on the European tuna purse seine fisheries of the Indian Ocean, Proceedings of the 13 th Session of the IOTC Scientific Committee. IOTC-2010-SC-09, p.26, 2010.

E. Chassot, L. Floch, P. Dewals, I. Terrier, and P. Chavance, Statistics of the purse seine fleet of the French overseas territories targeting tropical tunas in the Indian Ocean, Proceedings of the 14 th Session of the IOTC Working Party on Tropical Tunas, pp.2012-2026, 2001.

F. Ménard, F. Marsac, E. Bellier, and B. Cazelles, Climatic oscillations and tuna catch rates in the Indian Ocean: a wavelet approach to time series analysis, Fisheries Oceanography, vol.15, issue.1, pp.95-104, 2007.
DOI : 10.1139/f03-030

R. G. Murtuggude, S. R. Signorini, J. R. Christian, A. J. Busalacchi, C. R. Mcclain et al., Ocean color variability of the tropical Indo-Pacific basin observed by SeaWiFS during 1997-1998, Journal of Geophysical Research: Oceans, vol.99, issue.8, pp.18351-18351, 1997.
DOI : 10.1029/1999JC900135

R. G. Murtuggude, J. P. Mccreary, and A. J. Busalacchi, Oceanic processes associated with anomalous events in the Indian Ocean with relevance to 1997-1998, Journal of Geophysical Research: Oceans, vol.34, issue.C2, pp.3295-3306, 2000.
DOI : 10.1029/1999JC900294

P. J. Pallarés, I. /. Hallier, and R. Orstom-pianet, Analyse du schéma d'´ echantillonnage multispécifique des thonidés tropicaux (Programme n ? 95 ´ Evolution du système de collecte et de traitement des données de la pêchethonì ere des senneurs européens et assimilés de, IOTC Working Party on Data Collection and Statistics IOTC Proceedings, vol.37, issue.2, pp.74-96, 1997.