Fish Stocks

Amorous roughy respond to fishing16th August 2013

A scientific paper (Pitman, Haddy and Kloser) has been released assessing the impact of commercial fishing on the reproductive capacity (fecundity) of orange roughy. Data from when exploitation began (1987–1992) is compared with current observations from the eastern Tasmanian stock. Findings show that fecundity is negatively related to stock size, meaning that as the population of orange roughy ...

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Fishermen collect 2,000 blue warehou lengths7th May 2013

In 2011 industry began to collect length data on blue warehou during the SETFIA run blue warehou fishery independant survey.  The aim of the collection is that the information could be used in a future stock assessment. Industry avoids blue warehou in an effort to allow it to rebuild but in doing so has lost the use of catch as an index of abundance. In 2011/12 Ray Wicks and his crew from Portla...

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Quotas in the South East increase 600 tonnes23rd April 2013

The Australian Fisheries Management Authority (AFMA) have stated that increasing productivity of wild fish stocks has allowed an increase in the sustainable seafood harvest catch limits for a number of key species in the Southern and Eastern Scalefish and Shark Fishery (SESSF). The South East Trawl Fishery is part of the SESSF. Catch limits for popular table fish such as flake and whiting have in...

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Will SPR analysis help assess blue warehou?22nd April 2013

An Australian breakthrough in stock assessment science looks to solve the problem of assessing data-poor fisheries and make assessment processes affordable. The approach estimates the proportion of spawning occurring relative to unfished levels rather than estimating sustainable catch levels directly, simply indicates whether fishing pressure should be incrementally increased or decreased until st...

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