IUCN Red List Assessment
Red List Category
Red List Criteria
Several subpopulations of Shortfin Mako have been assessed separately for the IUCN Red List, however further data are required to determine whether individuals occurring in the Mediterranean constitute a subpopulation (based on the definition of "subpopualtion" as given in the IUCN Red List Categories and Criteria). Recent investigations in the Mediterranean suggest that the western basin is a nursery area where bycatch of Shortfin Mako (Isurus oxyrinchus) from the tuna and swordfish fishery consists almost exclusively of juveniles. It is possible that this nursery area corresponds to the Eastern Central Atlantic population, which is affected by the swordfish longline fishery off the western coast of Africa and the Iberian peninsula. In other areas of the Mediterranean, the Shortfin Mako is caught sporadically. Reports from the Ligurian Sea show a significant decline since the 1970s. In the Adriatic Sea, Shortfin Makos were considered common at the end of 19th/beginning of the 20th centuries, but since 1972 there have been no records of this species reported despite a large increase in fishing pressure and introduction of new fishing gear to the area. On the basis of the absence of records of this species from some localised areas, evidence of large declines in others and captures of juveniles in a probable nursery area, this species is considered Critically Endangered in the Mediterranean, warranting focused attention and immediate action in order to preserve this species in the region.
- 2000Lower Risk/near threatened