Eighani M. auteur aut IRD Cope J. M. auteur aut IRD Raoufi P. auteur aut IRD Abbaspour Naderi R. auteur aut IRD Bach Pascal auteur aut IRD text journalArticle eng text/pdf born digital access The predominant policy for remedying the world fishing crisis aims at maximum sustainable yield (MSY) by adjusting gear selectivity and fishing effort to maintain sustainable stock levels. The yellowfin tuna (Thunnus albacares) fishery in the Sea of Oman has experienced intense increases in removals since 1980, with particularly high levels since the 1990s. Here, we apply a statistical catch-at-age model to time-series of catches and fishery-dependent length composition data to obtain a preliminary and general understanding of the population dynamics of this stock since the start of the fishery in 1950-2019. Despite limited data, population models consistently indicate a sharp decline in population status since the beginning of the time-series across a variety of assumptions on stock productivity and life history. The gillnet fishery takes almost exclusively immature individuals, with high fishing intensity and removal rates. Both reference models indicate the population is essentially at the same relative stock status in 2019 (10/100 of unfished), but with very different future projections and higher absolute stock size when recruitment is estimated. The yellowfin tuna population in 2019 is below estimated MSY reference points (based either on unfished size or spawning output at MSY) for current relative stock size, and over the fishing intensity at MSY, indicating current overfishing. Adjusting the interactions of that fishery with the population, while continuing to collected biological composition data representative of each fleet in the fishery, will help mitigate current stock decline and provide the ability to refine future population status determination and forecasts through more informed stock assessments. specialized OCEAN INDIEN IRAN 040PECHE 040INFSTA01 020MATH01 78 7 2420-2431 2021 1054-3139 https://www.documentation.ird.fr/hor/fdi:010083614 10.1093/icesjms/fsab114 1054-3139 [F B010083614] https://www.documentation.ird.fr/hor/fdi:010083614 https://www.documentation.ird.fr/intranet/publi/2021-11/010083614.pdf Accès réservé (Intranet de l'IRD) IRD - Base Horizon / Pleins textes 2021-11-08 2025-02-24 fdi:010083614 fre