Information briefs and risk analyses for species under consideration ...
Information briefs and risk analyses for species under consideration ... Information briefs and risk analyses for species under consideration ...
14 Carpet shark is not a commercially targeted species – its capture is generally a result of incidental bycatch. Carpet shark is currently managed as an open access non-QMS species. There does not appear to be any commercial demand specifically for carpet shark although carpet shark caught is often utilised for its fins. To some extent, the combined total allowable catch (TAC) limits of the target species may be limiting the total catch of carpet sharks. 15 Carpet shark landed catch includes both the catch that is utilised and fishers’ estimates of discarded catch. Commercial fishing method 16 Carpet shark is an incidental bycatch from the commercial fishing methods of bottom trawling and set netting. There is also a small amount of bycatch from bottom longline and rock lobster potting methods. Commercially landed catch 17 Estimated catch data from catch effort returns, together with corresponding landing information, provides the catch data set for carpet sharks. 18 A number of factors have resulted in some uncertainty within the data set for carpet shark. As there are many shark species within the New Zealand EEZ, and some of these are encountered relatively infrequently, there are sometimes instances where species are mis-identified and consequently mis-reported. Approximately 4-5% of the annual commercial shark catch is reported against generic stock codes such as ‘other sharks and dogs’ (OSD). In addition, there has been at least one occasion where estimated catch of cardinal fish (CDL) has been inaccurately recorded as carpet shark (CAR). The following analyses should be interpreted with these data uncertainties in mind. 19 Reported landings of carpet shark increased to 68 tonnes in the late 1980s, dropped to 2 tonnes in the early to mid 90s, and have since increased to record highs of more than 200 tonnes (Figure 3). The increased landings of carpet shark between 1988-91 were probably due to the operation of a shark liver oil fishery during this time period, which ceased around 1994 (Figure 3). 20 Since 2002, landings of carpet shark steadily increased from below 50 tonnes to over 245 tonnes in the 2006/07 fishing year (Figure 3). Landings by carpet shark fishstock code † show a corresponding catch increase from three fishery management areas (FMAs 3, 4 and 5) over the same time period (Figure 4). However, there has not been a corresponding increase in catch in the target fisheries that take carpet shark as bycatch within these FMAs. Other than changes in catch reporting trends, it is unclear why the catch of carpet shark has significantly increased in recent years. † Carpet shark fishstock codes relate to standard fisheries management areas e.g. CAR 1 = FMA 1) 26
Figure 3: Commercially landed catch of carpet shark from 1988-2007 (includes catch reported as discarded). Data taken from the landing portion of catch effort returns. Landed catch (kgs) 300000 250000 200000 150000 100000 50000 0 1988/89 1989/90 1990/91 1991/92 1992/93 Carpet shark landed catch 1988-2007 (greenweight) 1993/94 1994/95 1995/96 1996/97 Figure 4: Commercially landed catch of carpet shark by FMA 1988-2007 (includes discarded catch). Data taken from the landing portion of catch effort returns. Landings (kgs) 80000 70000 60000 50000 40000 30000 20000 10000 0 1988/89 1989/90 1990/91 1991/92 1997/98 27 1998/99 Fishing Year Carpet shark landed catch by fishstock 1988-2007 (greenweight) 1992/93 1993/94 1994/95 1995/96 1996/97 1997/98 Year 1998/99 1999/00 1999/00 2000/01 2000/01 2001/02 2001/02 2002/03 2002/03 2003/04 2003/04 2004/05 2004/05 2005/06 2005/06 2006/07 2006/07 CAR CAR1 CAR2 CAR3 CAR4 CAR5 CAR6 CAR7 CAR8 CAR9 CARET
- Page 1 and 2: Species under consideration for int
- Page 3 and 4: OCTOPUS Common name: Octopus Specie
- Page 5 and 6: charts is limited and therefore the
- Page 7 and 8: Figure 1: Comparison of reported la
- Page 9 and 10: Recreational fishery characteristic
- Page 11 and 12: Risk analysis and evaluation STOCK:
- Page 13 and 14: Immediacy and uncertainty risk anal
- Page 15 and 16: Environmental effects and protected
- Page 17 and 18: Table 2: Estimated catch of whelk (
- Page 19 and 20: Recommendation 20 Regardless of whe
- Page 21 and 22: Generic objective 2: Risk to avoidi
- Page 23 and 24: CARPET SHARK Class: Chondrichthyes
- Page 25: Growth, reproduction and recruitmen
- Page 29 and 30: Table 2: Processed state percentage
- Page 31 and 32: Sources of Information Data Sources
- Page 33 and 34: Generic objective 3: Risk to provid
- Page 35 and 36: Associated species (bycatch and tar
- Page 37 and 38: Fishing Council record an average o
- Page 39 and 40: Generic objective 3: Risk to provid
- Page 41 and 42: also contributed nearly 9% to the t
- Page 43 and 44: Treaty settlement obligations 20 MF
- Page 45 and 46: Severity of impact (low, medium or
- Page 47 and 48: from observer data in the squid tra
- Page 49 and 50: Risk analysis and evaluation STOCK:
- Page 51 and 52: RATTAILS Introduction 1 Rattails (o
- Page 53 and 54: Biological information Morphology,
- Page 55 and 56: WHX (white grenadier) Landed state
- Page 57 and 58: Risk analysis and evaluation STOCK:
- Page 59 and 60: Additional risk analysis not applic
- Page 61 and 62: Redbait contributed 1% to the total
- Page 63 and 64: Risk analysis and evaluation STOCK:
- Page 65 and 66: Objective(s) returning highest scor
- Page 67 and 68: Habitat interactions 6 No informati
- Page 69 and 70: catches. The reported discards have
- Page 71 and 72: Severity of impact (low, medium or
- Page 73 and 74: Relationship with other QMS stocks
- Page 75 and 76: Protected species interactions 7 No
Figure 3: Commercially l<strong>and</strong>ed catch of carpet shark from 1988-2007 (includes catch<br />
reported as discarded). Data taken from the l<strong>and</strong>ing portion of catch ef<strong>for</strong>t returns.<br />
L<strong>and</strong>ed catch (kgs)<br />
300000<br />
250000<br />
200000<br />
150000<br />
100000<br />
50000<br />
0<br />
1988/89<br />
1989/90<br />
1990/91<br />
1991/92<br />
1992/93<br />
Carpet shark l<strong>and</strong>ed catch 1988-2007 (greenweight)<br />
1993/94<br />
1994/95<br />
1995/96<br />
1996/97<br />
Figure 4: Commercially l<strong>and</strong>ed catch of carpet shark by FMA 1988-2007 (includes discarded<br />
catch). Data taken from the l<strong>and</strong>ing portion of catch ef<strong>for</strong>t returns.<br />
L<strong>and</strong>ings (kgs)<br />
80000<br />
70000<br />
60000<br />
50000<br />
40000<br />
30000<br />
20000<br />
10000<br />
0<br />
1988/89<br />
1989/90<br />
1990/91<br />
1991/92<br />
1997/98<br />
27<br />
1998/99<br />
Fishing Year<br />
Carpet shark l<strong>and</strong>ed catch by fishstock 1988-2007 (greenweight)<br />
1992/93<br />
1993/94<br />
1994/95<br />
1995/96<br />
1996/97<br />
1997/98<br />
Year<br />
1998/99<br />
1999/00<br />
1999/00<br />
2000/01<br />
2000/01<br />
2001/02<br />
2001/02<br />
2002/03<br />
2002/03<br />
2003/04<br />
2003/04<br />
2004/05<br />
2004/05<br />
2005/06<br />
2005/06<br />
2006/07<br />
2006/07<br />
CAR<br />
CAR1<br />
CAR2<br />
CAR3<br />
CAR4<br />
CAR5<br />
CAR6<br />
CAR7<br />
CAR8<br />
CAR9<br />
CARET
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