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Blue Marlin

Makaira nigricans

Blue_marlin

Makaira

Nigricans

Blue marlin

Go to FishBase for more information on Makaira nigricans / Blue Marlin

Large Pelagics

Used for reduction (feed) purposes

N/A

36 Tunas, bonitos, billfishes

Vulnerable (VU)

2011-05-19

http://www.iucnredlist.org/apps/redlist/details/170314/0

Using a generation length of between 4.5 and 6 years, we estimated a decline in overall stock abundance of 31–38% over 14 years and 18 years, respectively. Global declines were calculated as a weighted average of the declines for each stock using maximum historical catch as a proxy for the stock's contribution to the global population. Based on the available data, this species is listed as Vulnerable under criterion A2. This species is not considered to be well managed in any part of its range. It is important to note that the Pacific stock comprises over half of the global population for this species, and that declines in the Pacific were estimated using catch data as no recent standardized indices were available. It is likely that declines based on these data are conservative. Fishing effort in the Pacific and Indian Oceans is increasing as a result of longline fisheries operating at deeper depths and in the Atlantic due to expansion of artisanal fleets. There is urgent need for an updated stock assessment for the Pacific Ocean and a reassessment of this species may be warranted when newer information becomes available. Data reporting from the Indian Ocean is also poor. We recommend that appropriate fishery statistics be compiled and analysed to accurately assess the condition of this species.