Search results
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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
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 ... of Dissostichus eleginoides at Heard Island in the southern Indian Ocean and South Georgia Island in ...
Meeting Document : WG-FSA-99/68 : Author(s): A.J. Constable, R. Williams, T. Lamb and E. van Wijk (Australia)
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Revised research program of Ukraine in Subarea 88.3
Abstract: The research of Dissostichus in Subarea 88.3 carried out by Chile in 1998, New Zealand ... in 2005, Russia in 2011 and 2012 and the Republic of Korea in 2016. It was noted that no tagged ... January to April, as ice conditions permit. It is planned that the number of longline sets will be 60 in ... four reserch blocks. It is planned to complete the study for Dissostichus spp. in Subarea 88.3 within 3 ...
Meeting Document : WG-FSA-17/34 : Author(s): Delegation of Ukraine
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Results of a research survey to monitor abundance of pre-recruit Antarctic toothfish in the southern Ross Sea, February 2012
longline surveys to monitor pre-recruit (<100 cm TL) toothfish in the south of SSRUs 881.J and 881.L in ... the southern Ross Sea using standardised gear in a standardised manner; and (ii) To carry out ... experimental depth-stratified fishing in 400–600 m depth adjacent to the survey boundaries to establish the ... carry out a longline survey of pre-recruit toothfish from commercial fishing vessel in Ross Sea using ...
Meeting Document : WG-SAM-12/29 : Author(s): S.M. Hanchet, S. Mormede, A. Dunn (New Zealand) and H.-S. Jo (Republic of Korea)
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Tooth growth in male Antarctic fur seals (Arctocephalus gazella) from South Georgia: an indicator of long-term growth history
in longitudinal sections of teeth. Mean age at death was 7∙69 ± 0∙07 years and this showed a small ... provided an indication of body growth, Tooth growth rate was lowest in seals which died early (age 4 years ... ) and increased with age at death. Changes in the growth pattern of teeth suggested that fur seals which ... became sexually mature early also died early. Tooth growth layers deposited in each calendar year were ...
Meeting Document : WG-CEMP-93/11 : Author(s): I.L. Boyd and J.P. Roberts (United Kingdom)
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Population change in gentoo penguins Pygoscelis papua at South Georgia: potential roles of adult survival, recruitment and deferred breeding
Abstract: Data on breeding population size and breeding success in gentoo penguins at Bird Island ... , South Georgia from 1977-1992 are used, in conjunction with empirical (and some hypothetical) data on ... survival and recruitment rates, to model the fluctuations in breeding populations, taking account of ... generally good agreement between observed and predicted breeding populations, except in four years, when ...
Meeting Document : WG-CEMP-93/08 : Author(s): J.P. Croxall and P. Rothery (United Kingdom)
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Potential modelling structures for a two-area stock assessment model for Antarctic toothfish (Dissostichus mawsoni) in the Amundsen Sea Region
Abstract: Two-area population models for Antarctic toothfish in the Amundsen Sea Region were ... developed further as current single area models did not fully explain the patterns in the observed data on ... , these models were limited to data collected in SSRU 88.2H as there were few data available to inform ... estimation of biomass in SSRUs 88.2C–G. Additional data resulting from a two-year research plan implemented ...
Meeting Document : WG-SAM-15/49 : Author(s): S. Mormede, S.J. Parker, A. Dunn and S.M. Hanchet (New Zealand)
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Selectivity-induced bias in growth parameter estimates
Abstract: A short simulation study has been carried out to investigate the size of the bias in ... being included in catch samples. Fish were included in catch samples from the population with ... selectivity function used in the simulations closely matched those used for current toothfish assessments in ... producing considerably lower estimates of L? and higher estimates of K than in the true population. The ...
Meeting Document : WG-FSA-SAM-05/19 : Author(s): G.P. Kirkwood (United Kingdom)
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DEVELOPING MODELS OF ANTARCTIC MARINE ECOSYSTEMS IN SUPPORT OF CCAMLR AND IWC
is currently in draft form open to comment and is being developed to provide an introduction to the ... to the use of ecosystem models in CCAMLR and the IWC and a history of the developmental work in those ... that need to be considered in parameterising a model, providing input data for those models and for ... addressing uncertainties in this process. Lastly, it summarises the modelling platforms being developed in ...
Meeting Document : WG-EMM-08/14 : Author(s): A. Constable (Australia)
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Annual report of research fishing operations at Division 58.4.3a in the 2017/18 fishing season
toothfish (Dissostichus eleginoides) in Division 58.4.3a in the 2017/18 fishing season by France and Japan ... . One fishing cruise by French vessel (“ Mascareignes III ”) took place in May 2018 and caught 2.5 ... tonnes of D. eleginoides in 58.4.3a. The data set, C2 and Observer data, were provided by the CCAMLR ... Secretariat on the 21th August 2018. In this paper, the data set during current fishing season (2017/18) was ...
Meeting Document : WG-FSA-18/50 : Author(s): Delegations of France and Japan
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Fish by-catch in the krill fishery: 2018 update
Abstract: Data on fish bycatch in the krill fishery from commercial catch data (120 949 hauls ... increase in the data quality from the observer scheme and an increase in the frequency of fish bycatch in ... the commercial krill fishery catch data. As in previous years there was a high degree of overlap in ... the most frequently reported taxa in the C1 data and SISO data, with Lepidonothen larseni the most ...
Meeting Document : WG-FSA-18/10 : Author(s): CCAMLR Secretariat