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Reseeding:
Reseeding involves the growing of juveniles in land based
hatcheries (to approx 20mm) and then out-planting them onto the
coast. Read More.....
Translocation:
Normally headlands and high energy reef systems provide
the water movement, aeration and food availability which allow paua
to grow at a faster growth rate. The fastest growing areas will
allow paua to grow to the minimum legal size within 4 to 5 years
but in slow growing areas the paua may never reach this size. Read
More....
Fish-downs:
In some situations paua may never get to the minimum legal
size (125mm) which could be caused by such things as a lack of food
(food needs to brush past paua – paua do not go searching
for food), stocking density (population), not enough aeration in
the water (paua don’t move so the water passing through their
gills needs to be carrying oxygen), the water is too warm for some
of the year (the colder the water the bigger paua grow (the Chatham
and Stewart Islands have the largest paua). Read
More....
Minimum
Legal Size:
The objective with setting a Minimum Legal Size (MLS) is
to protect the spawning biomass so that all paua have at least two
years of spawning before they reach the MLS and can be harvested.
All paua fisheries in New Zealand (including the Chatham Islands)
have a MLS of 125mm. Unfortunately the work that supports this was
based in Kaikoura so the MLS in Kaikoura might not be ideally suited
to other regions. Read More...
Spreading
Catch effort:
If everybody went to the same bay and harvested paua it wouldn’t
take long to catch all the paua in that bay that were above the
Minimum Legal Size (MLS). In the fishing industry this is called
serial depletion. Read More...
Diver
standards:
The commercial fishing sector is well known
for the training of the people that work in the industry and the
Seafood Industry Training Council (SITO) has been established specifically
for this. Read More...
Data
Collection:
Catch and effort data (CPUE) is recorded by each commercial
paua harvester. This data (along with other data sets) are utilised
in the stock modeling process where a highly sophisticated computer
programme models the fishery and predicts what will happen to it
in the future. Read more...
Fine
scale management:
Fine scale management of paua fisheries is seen as vital
as it is the only way to increase productivity / utilisation while
at the same time ensuring sustainability. Read
more...
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