WG-FSA-99/01
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Provisional Agenda and Annotated Provisional Agenda for the 1999 Meeting of the Working Group on Fish Stock Assessment (WG-FSA)
CCAMLR Secretariat
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WG-FSA-99/02
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List of participants
CCAMLR Secretariat
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WG-FSA-99/03
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List of documents
CCAMLR Secretariat
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WG-FSA-99/05
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Results of experimental trials of bird by-catch reduction methods conducted by the UK-registered longliner Argos Helena in Statistical Subarea 48.3
Agnew, D.J., A. Black, J.P. Croxall and G. Parkes
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WG-FSA-99/06
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Off the hook? Initiatives to reduce seabird by-catch in longline fisheries
Cooper, J., J.P. Croxall and K.S. Rivera
Abstract:
The recent history of global initiatives to reduce seabird by-catch in longline fisheries are reviewed, highlighting in turn the activities of environmental and industry non-governmental organizations (NGOs), national governments and inter-governmental bodies. At least 40 species of seabirds, especially albatrosses and petrels, are affected, with unsustainable mortality rates in a number Read More
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Admin Admin (CCAMLR Secretariat)
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Admin Admin (CCAMLR Secretariat)
Publication:
Cooper, J., J.P. Croxall and K.S. Rivera. 1999. Off the hook? Initiatives to reduce seabird by-catch in longline fisheries. In: Melvin, E.F., and J.K. Parrish (Eds). Proceedings of the Symposium on Seabird By-catch: Trends, Roadblocks and Solutions. Fairbanks: Alaska Sea Grant Program.
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WG-FSA-99/07
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Secretariat work in support of WG-FSA
CCAMLR Secretariat
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WG-FSA-99/08
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Fishery Data Manual – draft English version
CCAMLR Secretariat
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WG-FSA-99/09
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Fishery information for WG-FSA-99
CCAMLR Secretariat
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WG-FSA-99/10
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A summary of observations on board longline vessels operating within the CCAMLR Convention Area
CCAMLR Secretariat
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WG-FSA-99/11
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Summary of observations aboard trawl vessels operating in the Convention Area during the 1998/99 season
CCAMLR Secretariat
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WG-FSA-99/12
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A summary of observations on compliance with Conservation Measures 29/XVI and 63/XV
CCAMLR Secretariat
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WG-FSA-99/13
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Estimates of seabed areas within the range of distribution of Dissostichus spp.
CCAMLR Secretariat
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WG-FSA-99/14
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Research survey data
CCAMLR Secretariat
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WG-FSA-99/15
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Catch-weighted length frequencies from commercial data
CCAMLR Secretariat
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WG-FSA-99/16
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Biological characteristics of Antarctic fish stocks in the Southern Scotia Arc region
Kock, K.-H., C. Jones and S. Wilhelms
Abstract:
Commercial exploitation of finfish in the southern Scotia Arc took place from 1977/78 to 1989/90, with its heydays from 1977/78 to 1981/82. Except for Elephant Island, the state of fish stocks of the southern Scotia Arc region has found little attention until 1998 despite substantial catches in the first four years of the fishery and the possibility to sample these catches extensively. Read More
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WG-FSA-99/17 Rev. 1
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United Kingdom research underway on Southern Ocean seabirds vulnerable to fisheries interactions
Croxall, J.P.
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WG-FSA-99/18
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Seabird mortality on longlines in Australian waters: a case study of progress and policy
Gales, R., N. Brothers, T. Reid, D. Pemberton and G.B. Baker
Submitted By:
Admin Admin (CCAMLR Secretariat)
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Admin Admin (CCAMLR Secretariat)
Publication:
Gales, R., N. Brothers, T. Reid, D. Pemberton and G.B. Baker. 1999. Seabird mortality on longlines in Australian waters: a case study of progress and policy. In: Adams, N.J. and R.H. Slotow (eds). Proc. 22 Int. Ornithol. Congr., Durban: 648-675. Johannesburg: BirdLife South Africa.
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WG-FSA-99/19
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Quantifying habitat use in satellite-tracked pelagic seabirds: application of kernel estimation to albatross locations
Wood, A.G., B. Naef-Daenzer, P.A. Prince and J.P. Croxall
Abstract:
We develop a new approach to quantifying habitat use within the foraging ranges of satellite-tracked seabirds. We applied kernel estimation techniques to 167 days (3738 locations) of data from black-browed and grey-headed albatrosses (Diomedea melanophris and D. chrysostoma) during the chick rearing period of the breeding cycle at South Georgia. At this time the activity range of these two Read More
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WG-FSA-99/20
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Foraging location and range of white-chinned petrels Procellaria aequinoctialis breeding in the South Atlantic
Berrow, S.D., A.G. Wood and P.A. Prince
Abstract:
The foraging range and principal feeding areas of White-chinned Petrels breeding at South Georgia were determined using satellite telemetry. Foraging trips during incubation lasted 12-15 days and covered 3,000-8,000 km and 2-11 days and 1,100-5,900 km during chick-rearing. Adults covered less distance per day during chick-rearing (71 km) than during incubation (91 km) but the proportion Read More
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WG-FSA-99/21
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Areas and scales of interactions between albatrosses and the marine environment: species, populations and sexes
Prince, P.A., H. Weimerskirch, A.G. Wood and J.P. Croxall
Submitted By:
Admin Admin (CCAMLR Secretariat)
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Admin Admin (CCAMLR Secretariat)
Publication:
Prince, P.A., H. Weimerskirch, A.G. Wood and J.P. Croxall. 1999. Areas and scales of interactions between albatrosses and the marine environment: species, populations and sexes. In: Adam, N.J, and R.H. Slotow (eds). Proc. 22 Int. Ornithol. Crong., Durban: 2001-2020. Johannesburg: BirdLife South Africa.
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WG-FSA-99/23
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The incidental catch of seabirds by longline fisheries: worldwide review and technical guidelines for mitigation
Brothers, N.P., J. Cooper and S. Løkkeborg
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WG-FSA-99/24
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Effect of a shore-based sampling programme on Notothenia coriiceps populations
Casaux, R. and E. Barrera-Oro
Abstract:
The effect of an intensive sampling programme on an inshore population of Notothenia coriiceps was studied at Potter Cove, South Shetland Islands, by comparing catch data taken in successive summers of 1992/93 to 1994/95 at one specific zone (site 1) with those taken in the same last summer at two close but not previously sampled zones (sites 2 and 3). The fish were caught with trammel nets Read More
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WG-FSA-99/25
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Foraging ecology of grey-headed mollymawks at Marion Island in relation to longline fishing activity
Nel, D.C., J.L. Nel, P.G. Ryan, N.T.W. Klages, R.P. Wilson and G. Robertson
Abstract:
Grey-headed mollymawks Thalassarche chrysostoma are killed by longline fishing operations in the southern Indian Ocean. We studied the foraging ecology of breeding grey-headed mollymawks at Marion Island, by tracking their foraging trips and sampling their diets. During the incubation period, birds made longer foraging trips, mostly towards the subtropical convergence and Subantarctic zone. Read More
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WG-FSA-99/26
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Factors affecting the number and mortality of seabirds attending trawlers and longliners in the Kerguelen area
Weimerskirch, H., D. Capdeville and G. Duhamel
Abstract:
The factors affecting the number and the mortality of seabirds attending long-liners and trawlers fishing in the Kerguelen area were studied during four successive seasons (1994-1997), based on observations carried out onboard by dedicated observers. Twenty-four species of seabirds were observed attending fishing vessels representing 591 birds / census. The total numbers attending varied Read More
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WG-FSA-99/27
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French research underway on Southern Ocean seabirds vulnerable to fisheries interactions
Weimerskirch, H.
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WG-FSA-99/28
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Preliminary analysis of seabird bycatch using CCAMLR observer data
Agnew, D.J. and J.P. Croxall
Abstract:
We used data collected by CCAMLR International Scientific Observers in 1997 and 1998 to examine potential relationships between seabird incidental mortality rates on longline vessels fishing for Dissostichus eleginoides and various factors, including the nature and use of mitigating measures as well as environmental variables such as time of day, time of year.
Out of 3283 longline sets Read More
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WG-FSA-99/30
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Increase in relative abundance of fjord Notothenia rossii in Potter Cover, South Shetland Islands, after the decrease associated with commercial fishing in the area
Barrera-Oro, E.R., E.R. Marschoff and R.J. Casaux
Abstract:
A monitoring program of demersal fish in inshore sites of the South Shetland Islands has continued in Potter Cove from 1991 to 1999, covering a continuous sampling period of sixteen years and in Harmony Cove, Nelson Island, in the austral summer 1995/96. The decline in trammel net catches of fjord fishes of the species Notothenia rossii and Gobionotothen gibberifrons in relation to the non Read More
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WG-FSA-99/31
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Notes on the availability of three important finfish species in offshore and inshore waters of the lower South Shetland Islands (Subarea 48.1)
Jones, C.D., E.R. Barrera-Oro, E.R. Marschoff and R.J. Casaux
Abstract:
In 1998, an offshore scientific trawl survey of bottom fish sampling within the 50-500 m isobath of the lower South Shetlands Islands (King George Island to Low Island) was conducted. In addition, the abundance of two commercially important Antarctic fish, Notothenia rossii and Gobionotothen gibberifrons has been monitored relative to another potentially exploitable fish, Notothenia coriiceps Read More
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WG-FSA-99/32
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Changes in biomass of eight species of finfish around the South Orkney Islands (Subarea 48.2) from three bottom trawl surveys
Jones, C.D., K.-H. Kock and E. Balguerías
Abstract:
Stocks of finfish around the South Orkney Islands (Subarea 48.2) suffered substantial declines during the period the fishery was open from split year 1977/78 through 1989/90. Scientific bottom trawl surveys of finfish biomass within the 500 m isobath of the South Orkney Islands have been conducted by the Federal Republic of Germany in 1985, Spain in 1991, and the United States in 1999. Read More
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WG-FSA-99/33
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Revised estimates of seabed areas within the 500 m isobath of the South Orkney Islands (Subarea 48.2) and consequences for standing stock biomass estimates of nine species of finfish
Jones, C.D.
Abstract:
A revised bathymetric map of the South Orkney Islands (Subarea 48.2) was generated using several integrated bathymetric databases and newly available acoustic seafloor data. The region extends from 60.2ºS-62.2ºS latitude and 42.5º-47.5º longitude. From the integrated data sets, areas of seabed within the 500 m isobath were computed for 50 m depth intervals. Areas were calculated based on Read More
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Admin Admin (CCAMLR Secretariat)
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WG-FSA-99/34
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Research underway on South African seabirds vulnerable to fisheries interactions
Delegation of South Africa
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WG-FSA-99/35
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Avoidance of incidental mortality of seabirds and the implementation of Conservation Measure 169/XVII in Statistical Subarea 88.1 in the 1998/99 season
Molloy, J. and N. Smith
Abstract:
New Zealand conducted Longline weighting trials during the 1998/99 fishery for Dissostichus spp. in Sub-area 88.1. Daylight setting was allowed south of 65°S in Sub-area 88.1 under special provisions in Conservation Measure 169/XVII. The provisions included strictly applied line-weighting regimes and rigorous monitoring of line sink rates.
In the trials, two autoline vessels set weighted Read More
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Admin Admin (CCAMLR Secretariat)
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Admin Admin (CCAMLR Secretariat)
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WG-FSA-99/36
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Risk assessment of wandering albatrosses Diomedea exulans, breeding on Marion Island, to by-catch within CCAMLR statistical areas
Nel, D.C., J. Cooper and G. Robertson
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WG-FSA-99/37
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Longline sink rates on bottom autoline vessels
Smith, N.
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WG-FSA-99/38
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Sexual dimorphism and sexual segregation in foraging strategies of northern giant petrels Macronectes halli during incubation
González-Solís, J., J.P. Croxall and A.G. Wood
Abstract:
Giant petrels (Macronectes spp) are the most sexually dimorphic of all seabirds. We used satellite-tracking and mass change during incubation to investigate the influence of sexual size dimorphism, in terms of the intersexual food competition hypothesis, on foraging and fasting strategies of northern giant petrels at South Georgia. Females foraged at sea whereas males foraged mainly on the Read More
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WG-FSA-99/39
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Foraging partitioning between giant petrels Macronectes spp. and its relationship with breeding population changes at Bird Island, South Georgia
González-Solís, J., J.P. Croxall and A.G. Wood
Abstract:
We tracked by satellite the foraging trips of males and females of the two sibling species of giant petrels, Macronectes halli and M.giganteus, breeding sympatrically at Bird Island (South Georgia, Antarctica), during the incubation period (November-December). Size of the activity range as well as speed and distance covered on foraging trips were similar between species but lower for males Read More
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WG-FSA-99/4
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Data and resources available to WG-FSA-99
Secretariat
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WG-FSA-99/40
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Rajid by-catch in the longline fishery for toothfish in Subarea 48.3
Agnew, D.J., J. Taylor and I. Everson
Abstract:
In response to concern about rajid bycatch in CCAMLR finfish fisheries, we conducted a preliminary analysis of data collected by UK scientific observers on vessels fishing toothfish in Subarea 48.3 from April to July 1999. The overall average catch rate of rays was 0.7/thousand hooks, compared with 34.7/thousand hooks for toothfish and 2.2/thousand hooks for grenadier species. Generalised Read More
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WG-FSA-99/41
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Notification of research vessel activity in the Convention Area
Delegation of the UK
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WG-FSA-99/42 Rev. 1
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Seabird by-catch in the Patagonian toothfish longline fishery at the Prince Edward Islands: 1998–1999
Ryan, P.G. and B.P. Watkins
Abstract:
Longline fishing for Patagonian toothfish Dissostichus eleginoides in the South African Exclusive Economic Zone around the Prince Edward Islands commenced in 1996. This paper summarises seabird bycatch during the year July 1998-June 1999. Data on seabird bycatch were obtained from fishery observers aboard all 11 sanctioned fishing trips, representing a fishing effort of 5.1 million hooks. This Read More
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WG-FSA-99/43
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Age and growth of Patagonian toothfish (Dissostichus eleginoides) and Antarctic toothfish (D. mawsoni) in waters from the New Zealand Exclusive Economic Zone to CCAMLR Subarea 88.1
Horn, P.L.
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WG-FSA-99/44
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Fishes collected during the 1998/99 exploratory fishery by New Zealand in CCAMLR Subarea 88.1 and registered in the national fish collection at the Museum of New Zealand Te Papa Tongarewa
Stewart, A.
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WG-FSA-99/45
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Assessing the impact of the proposed exploratory fishery for Dissostichus spp. in CCAMLR Subarea 88.1 in the 1999/2000 season on the family Rajidae
Smith, N.
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WG-FSA-99/46
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Genetic studies on toothfish (Dissostichus eleginoides and Dissostichus mawsoni): progress report for CCAMLR
Smith, P.
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WG-FSA-99/47
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Satellite tracking of white-chinned petrels and comparison with other Procellariiformes
Catard, A. and H. Weimerskirch
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Admin Admin (CCAMLR Secretariat)
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Admin Admin (CCAMLR Secretariat)
Publication:
Catard, A. and H. Weimerskirch. 1999. Satellite tracking of white-chinned petrels and comparison with other Procellariiformes. In: Adams, N.J. and R.H. Slotow (eds). Proc. 22 Int. Ornithol. Congr., Durban: 3008-3023. Johannesburg: BirdLife South Africa.
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WG-FSA-99/48
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Utilización de la tecnica de isoelectroenfoque en la identificación de ejemplares de merluza negra Dissostichus eleginoides (Smitt 1898) en el Atlantico sudoccidental
A. Pereira, H. Nion, Y. Marín y O. Pin (Uruguay)
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WG-FSA-99/49
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Research underway on New Zealand seabirds vulnerable to fisheries interactions
Molloy, J.
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WG-FSA-99/50
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Variations in condition indices of mackerel icefish at South Georgia from 1972 to 1997
Everson, I. and K.-H. Kock
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WG-FSA-99/51
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Undeclared catches of Dissostichus eleginoides (compilation of available data) – Report of the subgroup on IUU fisheries
Duhamel, G., S. Fitch, M. Purves and B. Watkins
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WG-FSA-99/52
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Protection of young fish and spawning aggregations in the fishery for Champsocephalus gunnari in Subarea 48.3 (South Georgia): a discussion
Parkes, G.
Abstract:
The need to protect young fish and spawning aggregations in fisheries generally, and specifically in the C. gunnari fishery in Subarea 48.3, is reviewed. Mechanisms available to achieve these objectives are discussed, including the measures put in place by CCAMLR to date. These measures are re-examined in the light of new information, and a strategy for the future protection of young fish and Read More
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WG-FSA-99/53
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Progress in Australian initiatives for the conservation of albatrosses
Baker, G.B., N. Montgomery and A. McNee
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WG-FSA-99/54
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Inter-annual variation in spawning status of mackerel icefish
Everson, I. and K.-H. Kock
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WG-FSA-99/55 Rev. 1
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A comparison of the maturity stages used to estimate the reproductive status of mackerel icefish Champsocephalus gunnari
Everson, I., J. Ellison and K.-H. Kock
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WG-FSA-99/56
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An inter-laboratory comparison of ages estimated for Dissostichus eleginoides using otoliths
Ashford, J. and P. Horn
Abstract:
To examine consistency between laboratories in age estimation of Patagonian toothfish, otoliths were taken from 100 fish caught in the South Atlantic, and transverse sections prepared by baking, then grinding from the anterior and posterior sides of the otolith. Ages were estimated from the otoliths by one reader from the Center for Quantitative Fisheries Ecology at Old Dominion University and Read More
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WG-FSA-99/57
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Fishing cruise of the Russian trawler Zakhar Sorokin to the Antarctic (Subarea 48.3) from 16 February to 10 March 1999
Senioukov, V.L. and P.N. Kochkin
Abstract:
From 16 February to 10 March, 1999, a Russian large capacity trawler "Zakhar Sorokin" carried out fishery for icefish Gunnari in CCAMLR subarea 48.3. During the cruise, 88 hauls were done and 264,921 t of icefish were caught. 86% of catch were taken from 28 February to 3 March on the nothwestern slope of the South Georgia Island, where icefish fed actively on Antarctic krill and, therefore, Read More
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WG-FSA-99/58
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On observations of ectoparasites of icefish Champsocephalus gunnari in Subarea 48.3 in March 1999
Senioukov, V.L.
Abstract:
In February-March 1999, a Russian fishing vessel "Zakhar Sorokin" carried out fishery for Champsocephalus gunnari in CCAMLR subarea 48.3. During the processing of catches taken in the area of the northwestern slope, two species of parasites were revealed: copepod Eubrachiella antarctica and leech Trulliobdella capitis Brinkman, 1948. Statistical data collected during examination of more than 3 Read More
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WG-FSA-99/59
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Relative abundance of seabirds at sea within CCAMLR statistical areas
Woehler, E.J., E.J. Appleyard and D.J. Watts
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WG-FSA-99/60
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Using additional information for generalised yield model
Gasiukov, P.S.
Abstract:
It has been suggested a method of GY-model adjustment to the additional data of observations represented as abundance indices. Catch per effort values or results of inventory surveys can serve as such indices. Adjustment basic concept is a selection of those GY-models from realization sets a certain function of which runs through the set of points defined by confidence intervals of abundance Read More
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WG-FSA-99/61
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Australian research underway on seabirds vulnerable to fisheries interactions
Baker, G.B.
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WG-FSA-99/62
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Report on meetings with Norwegian gear manufacturers Mustad and Fiskevegn
Robertson, G.
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WG-FSA-99/63
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Variation in standing stock of the mackerel icefish Champsocephalus gunnari at South Georgia
Everson, I., G. Parkes, K.-H. Kock and I. Boyd
Abstract:
1. Bottom trawl surveys on the South Georgia shelf indicate episodic declines in the abundance of the mackerel icefish Champsocephalus gunnari that, since 1990, are not directly attributable to commercial fishing.
2. The greatest effect has been observed in years when krill are known to have been scarce on the South Georgia shelf.
3. It is thought that C. gunnari survivorship is Read More
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Publication:
Everson, I., G. Parkes, K.-H. Kock and I. Boyd. 1999. Variation in standing stock of the mackerel icefish Champsocephalus gunnari at South Georgia. Journal of Applied Ecology, 36(4): 591-603. https://doi.org/10.1046/j.1365-2664.1999.00425.x
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WG-FSA-99/64
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On the problem of diurnal migrations of some fish species on the South Georgia shelf (Subarea 48.3)
Trunov, I.A., J.A. Frolkina and M.P. Konstantinova
Abstract:
The results of experiments on the South Georgia Shelf carried out in the period of 1986 to 1990 have been presented. Six (6) daily stations were occupied where vertical distribution of fry and young individuals (including adult specimens) of Champsocephalus gunnari, Champsocephalus aceratus, Pseudochaenichthys georgianus (Channichthiidae family) and Nototheniops larseni (Nototheniidae family) Read More
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WG-FSA-99/65
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Distribution and some biological features of icefish (Champsocephalus gunnari) at different life cycle stages in the South Georgia subarea
Frolkina, Zh.A.
Abstract:
The results of icefish ecology were summarized for the period of above 20 years of South Georgia Subarea study. Ecological aspects were considered taking into account temporal-spatial variability. The functional structure of Ch.gunnari distribution area was described on the basis of juvenile fish distribution at different stages of physiological state. Juvenile fish mainly distribute in the Read More
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WG-FSA-99/66
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Extract from Natural History of British Fishes
Everson, I.
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WG-FSA-99/67
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Working paper on scientific issues related to a Unified Regulatory Framework for CCAMLR based on stages of fishery development
CCAMLR Secretariat
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WG-FSA-99/68
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Revision of biological and population parameters for Dissostichus eleginoides on the Heard Island Plateau (Division 58.5.2) based on a comprehensive survey of fishing grounds and recruitment areas in the region
Constable, A.J., R. Williams, T. Lamb and E. van Wijk
Abstract:
Based on a survey of Dissostichus eleginoides in the Heard Island region in April 1999 and information from an observer program on the commercial fishery begun in 1997, this paper aims (i) to provide an assessment of biomass and stock structure in the vicinity of Heard, (ii) to examine the relationship between commercial fishing grounds and the wider plateau and banks where surveys have been Read More
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WG-FSA-99/69
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Assessment of yield and status of Macrourus carinatus on BANZARE Bank in the southern Indian Ocean: implications for managing by-catch in CCAMLR fisheries
Van Wijk, E.M., A.J. Constable, R. Williams and T. Lamb
Abstract:
This paper assesses the status and abundance of M. carinatus on BANZARE Bank (Statistical Division 58.4.3/1). The long-term precautionary yield was estimated using the Generalised Yield Model (GYM) used previously by the CCAMLR Working Group on Fish Stock Assessment. Estimates of population and biological parameters were not available for this species at BANZARE Bank. Length and weight data Read More
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WG-FSA-99/70
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Preliminary evaluation of global aggregate long term annual yield for Patagonian toothfish, Dissostichus eleginoides
Constable, A.J., L.S. Meyer and R. Williams
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WG-FSA-99/71
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1999 Report of the WG-FSA Subgroup on Approaches to Assessments
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WG-FSA-99/72
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Seabird, seal and fishing vessel interactions in the Heard and MacDonald Islands and Macquarie Island Patagonian toothfish trawl fishery
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WG-FSA-99/73
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Seabird interactions with longline fishing in the AFZ: 1998 seabird mortality estimates and 1988–1998 trends
Brothers, N., R. Gales and T. Reid
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WG-FSA-99/74
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Problems with estimation of size at maturity of Dissostichus mawsoni in Subarea 88.1
Patchell, G.
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