Scalefish Common Jack Mackerel

Common Jack Mackerel
Trachurus declivis

Illustration©R.Swainston/anima.fish

2019/20 Assessment Summary

STOCK STATUS
SUSTAINABLE


Summary
Common Jack Mackerel is a predominately Commonwealth-managed species that has been classified as “Not overfished nor subject to overfishing” by ABARES for 2019. Only minor catches of this species have been taken from Tasmanian waters in recent years due to one operator leaving the fishery. Patterns of catch and effort are unlikely to reflect stock status, but the currently low level of fishing pressure in Tasmania is unlikely to cause the stock to become recruitment impaired.


Importance
Minor


Stock
Tasmanian Scalefish Fishery and Small Pelagic Fishery (Commonwealth)


Indicators
Catch, effort and CPUE trends


Managing Jurisdiction
Commonwealth


Background

Common Jack Mackerel is a schooling species that inhabits open water over the continental shelf from southern Queensland to Shark Bay, Western Australia, including Tasmania.

The Jack Mackerel fishery in Tasmania started in the early 1970s with a one-year venture catching 6,300 t in 1973. In 1985, another venture aimed at fishmeal production using purse seine nets commenced. Landings started rising rapidly to over 40,000 t in 1986/87 (Kailola et al. 1993). By 2000, fishers were struggling to catch surface schools and the industry began mid-water trawling (also for redbait) in Commonwealth waters. Small quantities of Jack Mackerel are also taken inshore as by-product from beach seine and inshore purse seine fishing.

The full 2019/20 Scalefish Assessment can be found at the link: