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Document Sample
Recent Trends in the
Atlantic Bluefin Tuna Fishery
January 1, 2013
Highly Migratory Species Management Division
Gloucester, MA
BFT Adjusted Quota
and Landings (mt)
3,000
Quota
2,500
Landings
2,000
metric tons
1,500
1,000
500
0
1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008
BFT Size at Age
(curved fork length)
Source: SCRS
BFT Maturity Curve
).
Source: Diaz and Turner 2006 (SCRS 2006/090)
Western Atlantic BFT Landings (weight)
(1975-2007)
20000
All BFT-W (t)
18000
US (t)
16000 Canada (t)
14000
Japan (t)
ALL Other (t)
12000
mt
10000
8000
6000
4000
2000
0
1950
1952
1954
1956
1958
1960
1962
1964
1966
1968
1970
1972
1974
1976
1978
1980
1982
1984
1986
1988
1990
1992
1994
1996
1998
2000
2002
2004
2006
Year
Western Atlantic BFT Landings (weight)
(1950-2007)
20000
All BFT-W (t)
18000
US (t)
16000 Canada (t)
14000
Japan (t)
ALL Other (t)
12000
mt
10000
8000
6000
4000
2000
0
1950
1952
1954
1956
1958
1960
1962
1964
1966
1968
1970
1972
1974
1976
1978
1980
1982
1984
1986
1988
1990
1992
1994
1996
1998
2000
2002
2004
2006
Year
Landings by Category
2000
Angling
1800 LL/Trap
1600 Purse Seine
Harpoon
1400 General
1200
metric tons
1000
800
600
400
200
0
1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008
Commercial Landings by Area
1400.0
Gulf of Mexico (9-10)
1200.0 South Atlantic (8)
Mid-Atlantic (7)
1000.0 Northeast (1-6)
metric tons
800.0
600.0
400.0
200.0
0.0
1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008
Ex-vessel Revenues by Category
25
Purse Seine
Incidental
20
Harpoon
General
$ in millions
15
10
5
0
1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008
Fishery Participation –
Permits by Category
HMS Ch/HB
45000
HMS Angling
LL/Trap
40000
Purse Seine
35000 Harpoon
General
30000
number of permits
25000
20000
15000
10000
5000
0
1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008
Fishery Participation –
Permits by Area for 2000 and 2008
15000
HMS CH/HB
14000
HMS Angling
13000
LL/incidental
12000 Purse Seine
11000 Harpoon
10000
Number of permits
General
9000
8000
7000
6000
5000
4000
3000
2000
1000
0
2000 2008 2000 2008 2000 2008 2000 2008 2000 2008
NE (ME-CT) MA (NY-VA) SA (NC-GA) Florida Gulf,
Caribbean,
Other
Recreational Landings by Area
14000
small medium
12000 large school
school
10000
Number of fish
8000
6000
4000
2000
0
DE-VA
DE-VA
DE-VA
DE-VA
DE-VA
DE-VA
DE-VA
ME-CT
ME-CT
ME-CT
ME-CT
ME-CT
ME-CT
ME-CT
NY-NJ
NY-NJ
NY-NJ
NY-NJ
NY-NJ
NY-NJ
NY-NJ
2002 2003 2004 2005 2006 2007 2008
Data source: LPS (for ME-VA only)
Weekly recreational BFT landings by month and week from
Ocean City, MD for June 1-early October, 2003-2008
Cumulative weekly landings, 2003-2008
4000
2003
3500
2004
Numbers of Tuna Landed
3000
2005
2006
2500 2007
2008
2000
1500
1000
500
0
2 9 16 23 30 7 14 21 28 4 11 18 25 1 8 15 22 29 6 13 20 27 3 10 17 24 1
June July Aug Sept Oct Nov Dec
2008 Recreational and Commercial
Quota and Landings
(in mt)
1400
2008 Quota 1167
1200
2008 Landings
1000
metric tons
800
600
381.5 336
400
119 183.4
200
54.6
0
School LS/SM* LM/G
*[Total mt landed=381.5: 305 mt (80%) LS and 76 mt SM
(20%)]
Size Class 2008 Avg Wt
School 40 lb (18 kg)*
Large School 101 lb (46 kg)*
Small Medium 159 lb (72 kg)*
Large Medium/Giant 478 lb (217 kg)
2008 Recreational and Commercial
Quota and Landings
(in mt and number of fish)
1400 9000
7670 2008 Quota
2008 Quota 8000
1200
1167
2008 Landings 6611 2008 Landings
7000
1000
6000
5378
number of fish
metric tons
800 5000
3785
600 4000
3075
381.5 336 3000
400
2000
1519
119 183.4
200
54.6 1000
0 0
School LS/SM* LM/G School LS/SM** LM/G
**[Total number landed=7,670: 6,606 LS (86%) and
*[Total mt landed=381.5: 305 mt (80%) LS and 76 mt SM
(20%)] 1,064 SM (14%)]
Size Class 2008 Avg Wt
School 40 lb (18 kg)*
Large School 101 lb (46 kg)*
Small Medium 159 lb (72 kg)*
Large Medium/Giant 478 lb (217 kg)
GSL
GMA
MAB
GOM
MED
Average Round Weights of Domestic Landings
vs. Imports, 1983-2007
Rod and Reel
700
650
600
550
500
Weight in Lb
450
400
Overall
350 Commercial
Avg
Rod and
300 Reel
250 Canada
Imports
200 Med/E.Atl.
Imports
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
00
01
02
03
04
05
06
07
19
19
19
19
19
19
19
19
19
19
19
19
19
19
19
19
19
20
20
20
20
20
20
20
20
Average Round Weights of Domestic Landings
vs. Imports, 1983-2007
Harpoon
700
650
600
550
500
Weight in Lb
450
400
Overall
Commercial
Avg
350
Harpoon
300
Canada
250 Imports
200 Med/E.Atl.
Imports
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
00
01
02
03
04
05
06
07
19
19
19
19
19
19
19
19
19
19
19
19
19
19
19
19
19
20
20
20
20
20
20
20
20
Average Round Weights of Domestic Landings
vs. Imports, 1983-2007
Longline
700
650
600
550
500
Weight in Lb
450
400
Overall
350 Commercial
Avg
Longline
300
250 Canada
Imports
200 Med/E.Atl.
Imports
83
85
87
89
91
93
95
97
99
01
03
05
07
19
19
19
19
19
19
19
19
19
20
20
20
20
Average Round Weights of Domestic Landings
vs. Imports, 1983-2007
Purse Seine
700
650
600
550
500
Weight in Lb
450
Overall
400 Commercial
Avg
350
Purse Seine
300
Canada
250 Imports
200 Med/E.Atl.
Imports
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
00
01
02
03
04
05
06
07
19
19
19
19
19
19
19
19
19
19
19
19
19
19
19
19
19
20
20
20
20
20
20
20
20
BFT Import/Export Trends
BFT Imports by Flag Country Canada
1000
Spain
800
Metric Tons
Italy
600 Mexico
400 Others
200 Total
0
1998 1999 2000 2001 2002 2003 2004 2005 2006 2007
Year
Percent of U.S. Atlantic BFT Exported
90% 85% 81% 85% 81%
100% 77% 75% 76%
(by weight)
57% 60%
Percent
80% 46%
60% 44%
40%
20%
0%
1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007
Year
Atlantic BFT Trade
Imports and Exports (mt)
900
800
700
metric tons
600
U.S. Imports
500
Re-exports
400
U.S. Exports
300
200
100
0
1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007
Atlantic BFT Adjusted Quotas,
Landings, and Trade
3,000
Quota
U.S. Landings
Angling
Imports
2,500
Exports
Re-Exports
2,000
Metric Tons
1,500
1,000
500
0
1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007
International Reporting
A Complex Journey with the United States as a Runway
May stay in Japanese storage for 1 year+
Domestic Management Tools
• Quota distribution
Per ATCA, the domestic quota equals the ICCAT-recommended U.S. TAC
– % allocations by permit category (FMP)
– Area (North/South) subquotas (General, Longline, Angling categories)
– Time period subquotas (General category)
– % limits on certain sizes (school and trophy BFT by recreational
anglers)
• Effort controls
– Retention limits (various size classes)
– Restricted Fishing Days (General category)
• Time/area closures (Longline)
• Target catch requirements for incidental retention (Longline)
• Inseason actions (General, Charter/Headboat, Angling categories)
– Increase/decrease retention limits
– Close/reopen fishery
What people are saying about
decline in BFT landings
We’ve heard from fishermen and researchers that decline
may be due to...
• distribution changes due to water temperature & ocean
conditions
• change in availability of forage fish, such as herring
– due to fishing, e.g., herring fishery
– due to predation, e.g., by dogfish
• overfishing of BFT throughout the Atlantic, especially
eastern Atlantic and Mediterranean
– recruitment overfishing
– growth overfishing
– added impact of stock mixing
Atlantic BFT Catches per Decade
Fromentin & Powers, 2005: Atlantic bluefin tuna: population dynamics, ecology,
fisheries and management. Fish and Fisheries 2005, 6, 281-306.
