3.B.1.1.f Summary table by ecological category of resource (seasonal migrants)
Resource category State of stocks Ecological/environmental controls Fisheries management measures Operational targets
Mackerel Stock heavily fished throughout Mediterranean, Aegean, Marmara, and drastic reduction of immigration into the Black Sea, where it is caught almost exclusively in waters fished by Turkey. It is not clear whether lack of catches in N and W Black Sea is due to penetration north, or lack of fuel for fisheries in countries in transition. A joint stock assessment by countries fishing this stock throughout its range is essential This species is considered an important potential predator of Aurelia jellyfish and likely also, Mnemiopsis. Its abundance in the past was also linked to abundance of the next two species for which it is an important prey

It is important that passage of this and following migratory fish species be assured through fishways such as Bosphorus

 Especially important that cooperative decisions be made by exploiting countries on stock allocations An international working group should attempt to assess this and following stocks throughout their range, with the intention of restoring stock size to higher levels. (assistance to a working group on migratory pelagics: $20,000: 2 meetings)
Bonito Ditto Top predator of small pelagic fish Ditto Ditto (gill nets for this species may lead to marine mammal bycatch). Cost of monitoring programme for bycatch from fisheries operations: $15,000 per year for 3 years, beginning 1998: $45,000)
Bluefish Ditto Ditto Ditto Ditto

See also
3.B.1.1.a Summary table by ecological category of resource (small pelagic fish)
3.B.1.1.b Summary table by ecological category of resource (demersal fish)
3.B.1.1.c Summary table by ecological category of resource (anadromus fish)
3.B.1.1.d Summary table by ecological category of resource (indicators of ecosystem health)
3.B.1.1.e Summary table by ecological category of resource (exploitable species)
3.B.1 Fisheries issues: status of stocks and management of wild resources
3.B.2.1.d Loss or imminent loss of endangered species (fishes)