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Commission pour la conservation de la faune et la flore marines de l'Antarctique

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There is no abstract available for this document.

Abstract: 

We provide an update of the Bayesian sex and age structured population stock assessment model for Antarctic toothfish (Dissostichus mawsoni) in the Ross Sea (Subareas 88.1 and SSRUs 88.2A–B), by including tag-recapture data for 2005–06 from New Zealand vessels. The updated assessment resulted in a similar, though slightly higher, estimate of initial and current biomass as the 2005 base case model. The inclusion of the 2005 release and the 2006 recapture data had the effect of only slightly modifying the estimates from the models, suggesting that the new data had a similar pattern to that of previous years.

Model sensitivities using tag-recapture data from all vessels, revised biological parameters, and an alternative method of parameterising the tag-release data are also presented. Inclusion of ‘all vessels’ tagging data resulted in a much more optimistic assessment, but was due to the increased numbers scanned, but smaller increase in the reported numbers recaptured. It is likely that this assessment would change once the outstanding tag release and tag recapture data are used within the analysis.

The assessment using the revised biological parameters was slightly more optimistic in terms of B0 than the 2006 reference case, with the use of the lower M (0.13 y-1 rather than 0.15 y-1) resulting in a more optimistic estimate of B0. However, as the changes in growth, length-weight, and M all imply slightly lower productivity, the yield estimate from the revised parameters model are likely to be slightly lower than for the 2006 reference case.

As for the 2005 base cases, model fits to the data were mostly adequate, with the tag-release and recapture data providing the most information on stock size.

SCAF-86

Nom: 
Comité permanent sur l'administration et les finances
  • Meeting documents
Doc Number Titre
SCAF-86/04 SCAF - Background Information for Item 4 : Additional information on the Proposed Budget for 1987
SCAF-86/05 SCAF - Background Information for Item 5 : Study of Salaries and Related Allowancess for Professional Staff
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WS-FAD-86

Nom: 
Séminaire sur la détermination sur l'âge des poissons
  • Meeting documents
Doc Number Titre
CCAMLR/86/FA/02 Guide to Otoliths
T. Hecht (South Africa)
CCAMLR/86/FA/03 Techniques used to age Antarctic fish
R. Coggan and M. White (United Kingdom)
CCAMLR/86/FA/04 Fish ageing a method for decalcifying and sectioning fish otoliths
L. Barber (Canada), M. White and R. Coggan (United Kingdom)
CCAMLR/86/FA/05 Age of Antarctic fish: Validation of the timing of annuli formation in otoliths and scales
A.W. North (United Kingdom)
CCAMLR/86/FA/06 Fish ageing an annotated bibliography of recent publications
M. White (United Kingdom)
CCAMLR/86/FA/07 Informative approaches to ageing Antarctic fishes
R.L. Radtke and K.T. Hill (USA)
CCAMLR/86/FA/08 Contribution to the early life history of Channichthyidae from the Bransfield Strait and South Georgia
W. Ślósarczyk (Poland)
CCAMLR/86/FA/09 The study of age determination in filefish Novoclon modestus (Günther) from the ringmark on vertebra
B.-H. Park and B.-A. Kim (Republic of Korea)
CCAMLR/86/FA/10 Experience of ageing N. rossii using scales from different parts of the body (available in Russian only)
CCAMLR/86/FA/11 Methodical guidelines for collecting and initial processing of ichthyological material in Antarctic waters (in Russian)
CCAMLR/86/FA/12 Rapid method for estimating mean length of Champsocephalus gunnari from a range of age classes (available in Russian only)
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WS-KCPUE-89

Nom: 
Atelier sur l'étude par simulation de la CPUE du krill
  • Meeting documents
Doc Number Titre
WS-KCPUE-89/01 Agenda for the Krill CPUE Workshop
WS-KCPUE-89/02 Annotated agenda
WS-KCPUE-89/03 Some aspects of the relation between Antarctic krill abundance and CPUE measures in the Japanese krill fishery. (Component of SC-CAMLR-VI/BG/4)
D.S. Butterworth (South Africa)
WS-KCPUE-89/04 A simulation study of krill fishing by an individual Japanese trawler (SC-CAMLR-VI/BG/37)
D.S. Butterworth (South Africa)
WS-KCPUE-89/05 Analysis and modelling of the Soviet Southern Ocean krill fleet (SC-CAMLR-VII/BG/12)
M. Mangel (South Africa)
WS-KCPUE-89/06 Analysis and modelling of the Soviet Southern Ocean krill fleet, II: Estimating the number of concentrations and analytical justification for search data
M. Mangel (South Africa)
WS-KCPUE-89/07 Brief comments on the simulation study made by Prof. Butterworth on krill fishing by an individual Japanese trawler
T. Ichii and Y. Endo (Japan)
WS-KCPUE-89/08 CPUEs, body length and greenness of Antarctic krill during 1987/88 season in the fishing ground north of Livingston Island
T. Ichii and Y. Endo (Japan)
WS-KCPUE-89/09 Some examples of time budget data recorded by a Japanese trawler Ehiko Maru in 1986/87 season
T. Ichii and Y. Shimadzu (Japan)
WS-KCPUE-89/10 Size and density of krill layers fished by a Japanese trawler in the waters north of Livingston Island in January 1988
T. Ichii and Y. Shimadzu (Japan)
WS-KCPUE-89/11 Krill aggregation characteristics: spatial distribution patterns from hydroacoustic observations. Polar Biology (in press)
D.G.M. Miller and I. Hampton (South Africa)
WS-KCPUE-89/12 Some examples of time budget data recorded by a Japanese trawler, Ehiko Maru in 1986/87 season
Far Seas Fisheries Laboratory (Japan)
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WS-KCPUE-85

Nom: 
Séminaire ad hoc chargé d'étudier la PUE pour le krill
  • Meeting documents
Doc Number Titre
WS-KCPUE-85/01 Workshop on Krill CPUE Annotated Agenda
WS-KCPUE-85/02 Krill – Catch Per Unit Effort
J.A. Gulland (United Kingdom)
WS-KCPUE-85/03 A note on relating krill CPUE measures to abundance trends
D.G.M. Miller and D.S. Butterworth (South Africa)
WS-KCPUE-85/04 Some considerations on the usefulness of CPUE data from Japanese krill fishery in the Antarctic
Y. Shimadzu and T. Ichii (Japan)
WS-KCPUE-85/05 An updated information of the Japanese krill fishery in the Antarctic
Y. Shimadzu (Japan)
WS-KCPUE-85/06 Some aspects of repeated operation on the same patch in Japanese krill fishery
T. Ichii (Japan)
WS-KCPUE-85/09 Proposals on the standardisation of complex studies aimed to the elaboration of the system of the biological and oceanographical monitoring of the Antarctic waters (…)
R.R. Makarov and V.V. Maslennikov (USSR)
WS-KCPUE-85/10 Technique of modelling quantitative distribution of krill basing on the oceanographical, biological and hydroacoustic data of surveys on the computer
R.R. Makarov, V.V. Maslennikov, K.I. Yudanov and Z.I. Kizner (USSR)
WS-KCPUE-85/11 Rev. 1 List of participants
WS-KCPUE-85/12 A note on the characteristics of Japanese operation
Y. Shimadzu (Japan)
WS-KCPUE-85/13 Data tape listing (Japanese commercial krill fishing operations)
WS-KCPUE-85/7 Rev. 1 Agenda
WS-KCPUE-85/8 Rev. 1 List of documents
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WS-FLUX-94

Nom: 
Atelier sur l'évaluation des facteurs de flux du krill
  • Meeting documents
Doc Number Titre
WS-Flux-94/01 Agenda
WS-Flux-94/02 List of participants
WS-Flux-94/03 List of documents
WS-Flux-94/04 Acoustic data for the 1994 Krill Flux Workshop
Secretariat
WS-Flux-94/05 Use of current velocity data from fram to investigate the large scale transport of krill in the Scotia Sea
E.J. Murphy (United Kingdom)
WS-Flux-94/06 Large scale circulation in the South Atlantic: estimates from giant iceberg drift rates
P.N. Trathan and C. Symon (United Kingdom)
WS-Flux-94/07 Comparison of geostrophic velocities from Subarea 48.1
W.K. de la Mare (Australia)
WS-Flux-94/08 Reference materials on Statistical Area 48 for Krill Flux Workshop
M. Naganobu (Japan)
WS-Flux-94/09 Stream lines in the FRAM velocity field: speeds and directions from passive tracers
E.J. Murphy (United Kingdom)
WS-Flux-94/10 Tracer trajectories from the western shelf of South Georgia: ship displacement data
E.J. Murphy, I. Everson and C. Goss (United Kingdom)
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WS-CRAB-93

Nom: 
Atelier sur la gestion de la pêcherie des crabes antarctiques
  • Meeting documents
Doc Number Titre
WS-CRAB-93/01 Provisional Agenda and Annotation to Provisional Agenda for the Workshop on the Management of the Antarctic Crab Fishery
WS-CRAB-93/02 List of participants
WS-CRAB-93/03 List of documents
WS-CRAB-93/04 The Antarctic crab fishery: extracts from CCAMLR-XI and SC CAMLR-XI
Secretariat
WS-CRAB-93/05 Management and assessment options for the crab fishery around South Georgia
M. Basson and D.D. Hoggarth (United Kingdom)
WS-CRAB-93/06 Data required for implementation of management options
M. Basson and J.R. Beddington (United Kingdom)
WS-CRAB-93/07 A preliminary investigation of the possible effects of rhizocephalan parasitism on the management of the crab fishery around South Georgia
M. Basson (United Kingdom)
WS-CRAB-93/08 Uncertainty, resource exploitation, and conservation: lessons from history
D. Ludwig, R. Hilborn and C. Walters (USA)
WS-CRAB-93/09 Modelling crustacean fisheries: effects of parasites on management strategies
A.M. Kuris and K.D. Lafferty (USA)
WS-CRAB-93/10 Change-in-ratio and index-removal methods for population assessment and their application to snow crab (Chionoecetes opilio)
X. Xu, E.G. Dawe and J.M. Hoenig (USA)
WS-CRAB-93/11 Relative selectivity of four sampling methods using traps and trawls for male snow crabs (Chionoecetes opilio)
J.M. Hoenig and E.G. Dawe (USA)
WS-CRAB-93/12 Growth per molt of male snow crab Chionoecetes opilio from Conception and Bonavista Bays, Newfoundland
D.M. Taylor and J.M. Hoenig (USA)
WS-CRAB-93/13 Leslie analyses of commercial snow crab trap data: a comparative study of catchability coefficients
J.M. Hoenig, E.G. Dawe, D.M. Taylor, M. Eagles and J. Tremblay (USA)
WS-CRAB-93/14 Commercial vessel CCAMLR subsample logbook
USA
WS-CRAB-93/15 Commercial vessel daily activity logbook
USA
WS-CRAB-93/16 Commercial vessel fishing effort logbook
USA
WS-CRAB-93/17 Graphical presentations of preliminary data collected aboard the F/V Pro Surveyor in 1992
USA
WS-CRAB-93/18 Biology of blue crab, Portunus trituberculatus in the Yellow Sea and the East China Sea
J.-U. Lee and D.-H. An (Republic of Korea)
WS-CRAB-93/19 Nota sobre la presencia de Paralomis spinosissima y Paralomis formosa en las capturas de la campaña “Antartida 8611”
L.J. López Abellán and E. Balguerías (Spain)
WS-CRAB-93/20 Demography of the Korean blue crab, Portunus trituberculatus fishery exploited in the west coast of Korea and the East China Sea
J.-U. Lee and D.-H. An (Republic of Korea)
WS-CRAB-93/21 A brief exploitation of the stone crab Lithodes murrayi (Henderson) off south west Africa, 1979/80
R. Melville-Smith (South Africa)
WS-CRAB-93/22 Quantitative stock survey and some biological and morphometric characteristics of the deep-sea red crab Geryon quinquedens off south west Africa
C.J. De B. Beyers and C.G. Wilke (South Africa)
WS-CRAB-93/23 A system-of-equations approach to modeling age structured fish populations: the case of Alaskan red king crab, Paralithodes camtschaticus
J.A. Greenberg, S.C. Matulich and R.C. Mittelhammer (USA)
WS-CRAB-93/24 Plots of South Georgia Island crab data
R.S. Otto (USA)
WS-CRAB-93/25 Extract from: Macpherson, E. 1988. Revision of the family Lithodidae samouelle, 1819 (Crustacea, Decapoda, Anomura) in the Atlantic Ocean. Monografías de Zoología Marina Vol. 2: 9-153
MacPherson, E.
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WG-LTP-87

Nom: 
Groupe officieux chargé du programme à long terme des travaux pour le Comité Scientifique
  • Meeting documents
Doc Number Titre
WG-LTP-87/01 Draft Agenda
WG-LTP-87/02 List of Participants
WG-LTP-87/03 List of Documents
WG-LTP-87/04 Proposed activities for the long-term program of the work of the Scientific Committee of the Commission for the Conservation of Antarctic Marine Living Resources
K. Sherman (USA)
WG-LTP-87/05 Framework for the co-ordination of the long-term program of work for the Scientific Committee
K. Sherman (USA)
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WG-KRILL-94

Nom: 
Groupe de travail sur le krill
  • Meeting documents
Doc Number Titre
WG-Krill-94/01 Agenda
WG-Krill-94/02 List of participants
WG-Krill-94/03 List of documents
WG-Krill-94/04 Parameters for the stochastic krill dynamics model (SKDM): selectivity and maturity
D.J. Agnew (Secretariat)
WG-Krill-94/05 Incorporation of a model of krill recruitment into the Butterworth et al. Stochastic krill dynamics model (SKDM)
D.J. Agnew (Secretariat)
WG-Krill-94/06 Fine-scale catches of krill in Area 48 reported to CCAMLR for the 1992/93 fishing season
Secretariat
WG-Krill-94/08 Vacant
WG-Krill-94/09 Polish krill fishery in the 1991/92 and 1992/93 seasons results of catches and biological investigations
J. Sosinski and Z. Cielniaszek (Poland)
WG-Krill-94/10 Rev. 1 Analysis of krill fishing by soviet fishing vessels in the Cooperation Sea (Division 58.4.2) in 1978 by fine-scale data
V. Yakovlev and V.A. Bibik (Ukraine)
WG-Krill-94/11 Towards a distribution of M/ for krill (Euphausia superba) required for the stochastic krill yield model
M. Basson (United Kingdom)
WG-Krill-94/12 In situ target strength measurements of Antarctic zooplankton (Euphausia superba and Salpa thompsoni) at 120 khz and 200 khz, corroboration of scattering models, and a statistical technique for delineating species
D.A. Demer and R.P. Hewitt (USA)
WG-Krill-94/13 Zooplankton target strength: volumetric or areal dependence?
D.A. Demer and L.V. Martin (USA)
WG-Krill-94/14 An attempt to derive a composite index of abundance from acoustic surveys and fishery data
R.P. Hewitt (USA), V. Marín (Chile) and D. Demer (USA)
WG-Krill-94/15 Comments on WG-Krill-93/12 and 93/13
K. Hiramatsu (Japan)
WG-Krill-94/16 Demographic studies of Antarctic krill Euphausia superba Dana in the Cooperation and Cosmonaut Seas (Indian sector of the Southern Ocean)
E.A. Pakhomov (Ukraine)
WG-Krill-94/17 Towards a new method for age determination in Antarctic krill, and evidence that krill shrink under natural conditions
W. de la Mare (Australia)
WG-Krill-94/18 Hydroacoustic survey of Antarctic krill populations in CCAMLR Division 58.4.1 during 1995/96 summer season
W. de la Mare (Australia)
WG-Krill-94/19 Access to and use of data within CCAMLR
Prepared by the Convener, WG-Krill
WG-Krill-94/20 Suggested outline for the design and implementation of future near-synoptic krill surveys
Submitted by Denzil G.M. Miller (Convener WG-Krill
WG-Krill-94/21 Estimation of the biomass of krill in Prydz Bay during January/February 1991, February/March 1992 and January/ February 1993 using echo integration
T. Pauly and I. Higginbottom (Australia)
WG-Krill-94/22 Recruitment variability of Antarctic krill (Euphausia superba)
V. Siegel (Germany) and V. Loeb (USA)
WG-Krill-94/23 Yet further krill yield computations
R.B. Thomson and D.S. Butterworth (South Africa)
WG-Krill-94/24 Further calculations of the effects of krill fishing on predators
D.S. Butterworth and R.B. Thomson (South Africa)
WG-Krill-94/25 Fishes caught along with the Antarctic krill in the vicinity of the South Shetland Islands during the austral summer months of 1994
T. Iwami (Japan)
WG-Krill-94/26 Numerical model of ecosystem including Euphausia superba Dana as a key species in circumpolar region
M.J. Kishi and M. Naganobu (Japan)
WG-Krill-94/27 The plan for the 7th Antarctic research cruise by the RV Kaiyo Maru of the Japanese Fisheries Agency in 1994/95
M. Naganobu, T. Ichii, S. Kawaguchi, T. Ogishima and Y. Takao (Japan)
WG-Krill-94/28 CPUEs and body length of Antarctic krill during 1992/93 season in the fishing grounds north of Livingston Island
S. Kawaguchi, T. Ichii and M. Naganobu (Japan)
WG-Krill-94/29 Hydrographic flux in Statistical Area 88 of ccamlr in the Pacific sector of the Southern Ocean
M. Naganobu (Japan)
WG-Krill-94/30 Change of sex ratio of krill (Euphausia superba) from austral early summer to midsummer in 1983/84 in the vicinity of Prydz Bay, Antarctica
M. Naganobu and S. Kawaguchi (Japan)
WG-Krill-94/31 Modelling the spatial distribution of Antarctic krill (Euphausia superba Dana)
A.W.A. Murray (United Kingdom) and D.G.M. Miller (South Africa)
WG-Krill-94/32 Biological acoustic survey in the marginal ice edge zone of the Bellingshausen Sea
A.W.A. Murray, J.L. Watkins and D.G. Bone (United Kingdom)
WG-Krill-94/33 Operation results of Ukrainian vessels at Antarctic krill fishery in Subareas 48.2 and 48.3 in March-June 1994. Krill size composition
V.A. Bibik and V.N. Yakovlev (Ukraine)
WG-Krill-94/34 A review of the Antarctic krill (Euphausia superba Dana) biomass in the Cooperation Sea (= Prydz Bay region, Division 58.4.2)
E.A. Pakhomov (Ukraine)
WG-Krill-94/35 Conditions for the precise measurement of fish target strength in situ
K. Sawada and M. Furusawa (Japan), N.J. Williamson (USA)
WG-Krill-94/36 Report of the Workshop on Evaluating Krill Flux Factors (Cape Town, South Africa, 21 to 23 July 1994)
WG-Krill-94/7 Rev. 1 To the problem of assessment of probability of finding Antarctic krill concentrations in Division 58.4.2
V.N. Yakovlev, V.A. Bibik and L.M. Kokoz (Ukraine)
WG-Krill-94/Information-Note-1 Information Note 1
E. Marschoff (Argentina)
WG-Krill-94/Information-Note-2 Information Note 2
M. Naganobu (Japan)
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