Petit Michel auteur aut IRD text journalArticle eng text/pdf reformatted digital access A brief balance of the attainments and limits in the modern halieutic (fishery biology and economy) field is stricken and shows off the gap between the present management structure and the present problems. The surface tuna fishery case is thoroughly studied, considering its specificity and its economical importance. From there, it appears that conclusive strides will be made by halieutic science through the knowledge of the relationship between tuna and its environment. Some tuna environment studies are presented through typical remote sensing examples and introduce the basis of a coherent theory of tuna behaviour which can be schematically summarized by this basic general hypothesis; namely, that if tuna are present in a zone they will be inclined to aggregate close to any anomalies (gradients) of parameters in their environmental sensing field. From there several models are presented in order to assess or forecast surface tuna stocks specialized TELEDETECTION SPATIALE RADAR A ANTENNE SYNTHETIQUE SATELLITE SPOT PROSPECTION AERIENNE RESSOURCES HALIEUTIQUES PECHE THONIERE HAUT FOND GESTION DES PECHES 126TELAPP06 040PECHE02 12 4 713-724 1991 0143-1161 https://www.documentation.ird.fr/hor/fdi:34016 10.1080/01431169108929688 0143-1161 [F B34016] https://www.documentation.ird.fr/hor/fdi:34016 https://horizon.documentation.ird.fr/exl-doc/pleins_textes/pleins_textes_5/b_fdi_31-32/34016.pdf IRD - Base Horizon / Pleins textes 1991-05-21 2009-05-29 fdi:34016 fre