Fisheries Infosite

Plenary (COC3A_FINAL 08)

COC3A_FINAL 08.pdf

Link to file
COC3A_FINAL 08.pdf (172.7 kb)



The last stock assessment for Papanui Inlet and Waitati was in 2007. In Waitati Inlet for 2007 the

biomass of juvenile cockles (>2


-18 mm) has increased from 2002 and 2004 levels but remains well-34 mm) cockles has also increased over 2002 and

below figures for 1992. The biomass of adult (19

2004 levels but is lower than that recorded in 1998. The biomass of large adult (L35 mm) cockles is

the lowest since 1992, and the biomass of cockles L30 mm is the lowest since 1998.

No size limit has been set for COC 3. However, commercial fishers currently target cockles between

28-34 mm, and >38 mm. In Waitati Inlet, the estimates of CAY for this size category are above

current catch levels and recent reported landings. Furthermore, CAY estimates for the area of the inlet

where commercial fishing currently occurs are also above current catch levels and recent reported

landings. Catch levels higher than recent reported landings would be required to move the stocks in

the inlets towards a size that will support the maximum sustainable yield.

Cockles recruit to the spawning stocks in the Otago area at a length of about 18 mm shell length. The

harvested beds may receive spat from other areas. For these reasons, and because of the low

harvesting levels, the risk of recruitment overfishing is probably low.

Document date
Thursday, 15 May 2008
Document type
V 1.3
File format
Adobe PDF
File size
172.7 kb
Reference number
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Uploaded date
Friday, 7 November 2008

Search tags
Species: COC;
Stock: 3A;

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