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Greater argentine - Other areas of Northeast Atlantic, 2008
Marine Resource  Fact Sheet
ICES Advice 2009
Greater argentine - Other areas of Northeast Atlantic, 2008
Fact Sheet Citation  
Greater Silver Smelt in Subdivisions I, II, IIIa, IV, Vb, VI, VII, VIII, IX, X, XII and XIV (other areas)
Owned byInternational Council for the Exploration of the Sea (ICES) – More
Related observationsLocate in inventorydisplay tree map
 
Species:
FAO Names: en - Greater argentine, fr - Grande argentine
Geographic extent of Greater argentine - Other areas of Northeast Atlantic
Main Descriptors
Considered a single stock: Yes        Spatial Scale: Sub-Regional
 
 
Habitat and Biology
Depth zone: Slope (200 m - 1000 m).   Vertical distribution: Demersal/Benthic.  

Water Area Overview
Spatial Scale: Sub-Regional

Geo References
Resource Structure
Considered a single stock: Yes
Exploitation
 

Factors affecting the fisheries and the stock

Regulations and their effects

In 2003 quota management was introduced in EU waters. In 2008 the EU TACs are:

Subareas I and II 116 t

Subareas III, and IV1331 t

Subareas V, VI, and VII5311 t

A licensing scheme has been in place for several years in Norway and the Faroes. The licensing system regulates the number of trawlers that can take part in the directed fishery. Norway introduced a TAC in Subarea II in 2007.
Assessment
 
Assessment Model
Methodology

Scientific basis

Data and methods

Landings and mean length data are the basis for the advice. Total landings by area are presented in Tables 9.4.13.2.1 and 9.4.13.2.2.

Comparison with previous assessment and advice

No significant changes to the perception of the stock. Advice is the same as in 2006.
Overall Assessment Results


Table 9.4.13.2.1. Greater silver smelt. Other areas (I, II, IIIa, IV, Vb, VI, VII, VIII, IX, X, XII, and XIV). Working group estimates of total landings (tonnes).
Year I + II III + IV Vb VI + VII VIII XII XIV Total for other areas
1988 11351 2718 287 10438       24794
1989 8390 3786 227 25559       37962
1990 9120 2321 2888 7294     6 21629
1991 7741 2554 60 5197       15552
1992 8234 5319 1443 5906       20902
1993 7913 3269 1063 1577   6   13828
1994 6807 1508 960 5707       14982
1995 6775 1082 12286 6242       26385
1996 6604 3300 9498 5863   1   25266
1997 4463 2598 8433 7300       22794
1998 8261 3982 17570 5555       35368
1999 7163 4320 8214 8856   2   28555
2000 6293 2471 5209 13866     217 28056
2001 14369 2925 10081 19050     66 46491
2002 7407 1811 7471 15985 191     32865
2003 8917 1188 6549 2451 37     19142
2004 16162 1157 6451 5133 23 4   28930
2005 17093 791 7009 3808 202 322   29225
2006 21685 4016 12559 1115 0 0   39375
2007* 13273 3343 13357 223 0 0   30196
* Preliminary.


Table 9.4.13.2.2. Landings by country and area (tonnes). Greater silver smelt in I, II, IIIa, IV, Vb, VI, VII, VIII, IX, X, XII, and XIV. WG estimates of landings. *) preliminary.
Greater silver smelt (Argentina silus) I and II
Year Germany Netherlands Norway Poland Russia/USSR Scotland France Faroes TOTAL
1988     11332 5 14       11351
1989     8367   23       8390
1990   5 9115           9120
1991     7741           7741
1992     8234           8234
1993     7913           7913
1994     6217     590     6807
1995 357   6418           6775
1996     6604           6604
1997     4463           4463
1998 40   8221           8261
1999     7145     18     7163
2000   3 6075   195 18 2   6293
2001     14357   7 5     14369
2002     7405     2     7407
2003   555 8345   7 2 4 4 8917
2004   4601 11557   4       16162
2005     17063   16     14 17093
2006     21681   4       21685
2007*     13272   1       13273


Greater silver smelt (Argentina silus) III and IV.
Year Denmark Faroes France Germany Netherlands Norway Scotland Sweden Ireland TOTAL
1988 1062     1   1655       2718
1989 1322       335 2128 1     3786
1990 737     13   1571       2321
1991 1421   1   3 1123 6     2554
1992 4449     1 70 698 101     5319
1993 2347       298 568 56     3269
1994 1480         4 24     1508
1995 1061         1 20     1082
1996 2695 370       213 22     3300
1997 1332     1   704 19 542   2598
1998 2716     128 277 434   427   3982
1999 3772   82   7 5 452   2 4320
2000 1806   270     32 78 273 12 2471
2001 1653   28     3 227 1011 3 2925
2002 1161         1 161 484 4 1811
2003 1119       42 6 20   1 1188
2004 1036     4 42 17 12   46 1157
2005 733     1 28 11     18 791
2006 548         3468       4016
2007* 243         3100       3343


Table 9.4.13.2.2. Continued. Greater silver smelt (Argentina silus) Vb.
Year Faroes Russia/USSR UK (Scot) UK(EWN) Ireland France Netherlands Norway TOTAL
1988 287               287
1989 111 116             227
1990 2885 3             2888
1991 59   1           60
1992 1439 4             1443
1993 1063               1063
1994 960               960
1995 5534 6752             12286
1996 9495   3           9498
1997 8433               8433
1998 17570               17570
1999 8186   15 23   5     8214
2000 3713 1185 247     64     5209
2001 9572 414 94   1       10081
2002 7058 264 144       5   7471
2003 6261 245 1       42   6549
2004 3441 702 42       2266   6451
2005 6939 59         11   7009
2006 12524 35             12559
2007* 13354 3           32 13357


Greater silver smelt (Argentina silus) VI and VII.
Year Faroes France Germany Ireland Netherl Norway E & W Scotland N.I. Russia Spain TOTAL
1988       5454   4984           10438
1989 188     6103 3715 12184 198 3171       25559
1990 689   37 585 5871     112       7294
1991   7   453 4723     10 4     5197
1992   1   320 5118     467       5906
1993         1168     409       1577
1994     43 150 4137     1377       5707
1995 1597   357 6 4136     146       6242
1996     1394 295 3953     221       5863
1997     1496 1089 4695     20       7300
1998     463 405 4687             5555
1999   21 24 394 8025     387   5   8856
2000   17 482 4703 3636     4965   29 34 13866
2001   12 189 7494 3659     7620   76   19050
2002     150 7589 4020     4197   29   15985
2003     164 95 1933     89   163 7 2451
2004   147 652 46 3731     526   12 19 5133
2005 103 10 131 1 3465     75   4 19 3808
2006 53       1062             1115
2007* 220         3           223


Table 9.4.13.2.2. Cont’d. Greater silver smelt (Argentina silus) VIII.
Year Netherlands TOTAL
2002 191 191
2003 37 37
2004 23 23
2005 202 202
2006    
2007*    
SPA WG data zero in all years 97-2001


Greater silver smelt (Argentina silus) XII.
Year Faroes Iceland Russia Netherlands TOTAL
1988          
1989          
1990          
1991          
1992          
1993 6       6
1994          
1995          
1996 1       1
1997          
1998          
1999          
2000   2     2
2001          
2002          
2003          
2004     4   4
2005       322 322
2006          
2007*          


Greater silver smelt (Argentina silus) XIV.
Year Norway Iceland TOTAL  
1988        
1989        
1990 6   6  
1991        
1992        
1993        
1994        
1995        
1996        
1997        
1998        
1999        
2000   217 217  
2001 66   66  
2002        
2003        
2004        
2005        
2007*        


Figure 9.4.13.2.1. Greater silver smelt. Other areas (I, II, IIIa, IV, Vb, VI, VII, VIII, IX, X, XII, and XIV). Working group estimates of total landings (tonnes).


Scientific Advice

Single-stock exploitation boundaries

Due to its low productivity greater silver smelt can only sustain low rates of exploitation. Fisheries on such species should always be accompanied by programmes to collect data on both target and bycatch fisheries. The fishery should not be allowed to expand unless it can be shown that it is sustainable.
Management
 
Management Advice

Management considerations

Greater silver smelt can be a very significant discard of the trawl fisheries of the continental slope of Subareas VI and VII, particularly at depths of 300–700 m. The existing knowledge base is insufficient to determine whether the current exploitation is sustainable.

The variability in the catches appears to reflect market demand.

In 2002, ICES expressed concern about the apparent increase in the directed fishery in several Subareas and especially the increased landings in Subarea VI. It was noted that the age range had been truncated, which suggested high levels of exploitation. Mean length and age in the landings in Division Vb have decreased since 1995. No new data could be used to determine whether these trends have continued.
Biological State and Trend
Exploitation rate: Undefined
Abundance level: Undefined

The state of the silver smelt resource in other areas is unknown. Catches increased considerably in recent years, but were reduced in 2003 in some areas, partly due to introduction of TAC management in EU waters. In Subarea VI the frequency of old fish (20+) in the catches declined significantly after a few years of target fisheries. Such changes suggest high exploitation rates.
Source of information
 
ICES.2009.Report of the ICES Advisory Committee, 2009. ICES Advice, 2009.
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