Information briefs and risk analyses for species under consideration ...

Protected species interactions
7 None known.
Stock Assessment
8 There are no estimates of current or reference biomass, or sustainable yield.
Social, Economic, Cultural Information
Commercial fishery characteristics 1
9 Due to its widespread geographic distribution, silver dory is taken as bycatch in at
least 30 target fisheries. For the fishing years 2002/03 – 2006/07 total EEZ reported
catch of silver dory was 3,859 tonnes. The following table summarises the total
reported catch distribution by FMA for the fishing years 2002/03 – 2006/07.
FMA1 FMA2 FMA3 FMA4 FMA5 FMA6 FMA7 FMA8 FMA9 FMA10
103 t 23 t 354 t 56 t 1,114 t 6 t 772 t 806 t 624 t 0 t
10 The total reported catch for each of the cited fishing years is shown in the following
table.
2002/03 2003/04 2004/05 2005/06 2006/07
937 t 844 t 1,035 t 559 t 484 t
11 The percentage of total reported catch for each fishing year discarded or landed is
shown in the following table.
2002/03 2003/04 2004/05 2005/06 2006/07
Discarded 35% 36% 35% 32% 34%
Landed 65% 64% 65% 68% 66%
12 The percentage of reported landed catch for each fishing year landed as dressed,
green, or meal is shown in the following table (assuming discarded catch is reported
as green).
2002/03 2003/04 2004/05 2005/06 2006/07
Dressed 0% 0% 0% 0% 0%
Green 6% 8% 3% 3% 4%
Meal 94% 92% 97% 96% 95%
13 Although over 30 target fisheries report silver dory as bycatch, the mid-water jack
mackerel fishery reports the most bycatch of this species. Other fisheries reporting
significant quantities of silver dory bycatch are squid, barracouta and hoki. The
gemfish, silver warehou, tarakihi, and white warehou fisheries report moderate
bycatch amounts.
1
Tables showing figures as percentages may not sum to 100% as percentages are rounded to the nearest whole
number.
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