Search results
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Assessment models for Antarctic toothfish (Dissostichus mawsoni) in the Ross Sea for the years 1997–98 to 2010–11
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 region (Subareas 88.1 and SSRUs ... 88.2A–B), using revised catch, catch-at-age, and tag-recapture data for the 2010–2011 seasons. The 2011 ... reference model using the selected trips tag data gave a similar, but slightly higher estimate of initial ...
Meeting Document : WG-FSA-11/42 : Author(s): S. Mormede, A. Dunn and S.M. Hanchet (New Zealand)
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Assessment models for Antarctic toothfish (Dissostichus mawsoni) in the Ross Sea region for the years 1997–98 to 2014–15
Abstract: We provide an update of the Bayesian sex and age structured population stock assessment ... for Antarctic toothfish (Dissostichus mawsoni) in the Ross Sea region (Subareas 88.1 and SSRUs 88.2A–B ... ), using catch, catch-at-age, and tag-recapture data from 1997–98 to 2014–15 and including the results from ... the Ross Sea shelf survey from 2012 to 2015. The model results were similar to the 2013 assessment ...
Meeting Document : WG-FSA-15/38 : Author(s): S. Mormede, A. Dunn and S.M. Hanchet (New Zealand)
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Detection of growth zones in the eyestalk of the Antarctic krill Euphausia superba (Dana, 1852) (Euphausiacea)
Abstract: No reliable measures of age currently exist in the Antarctic krill, Euphausia superba ... (Dana, 1852). The eyestalks from 51 individuals were dissected, cut in longitudinal sections and studied ... for identifying growth zones. The krill was collected at the South Orkney Islands during January and ... , each zone consisting of one light and one dark section. The width of the longitudinal sections ...
Meeting Document : WG-EMM-16/P02 : Author(s): B.A. Krafft, M. Kvalsund, G. Søvik, E. Farestveit and A.-L. Agnalt
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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 ... relationship between commercial fishing grounds and the wider plateau and banks where surveys have been ...
Meeting Document : WG-FSA-99/68 : Author(s): A.J. Constable, R. Williams, T. Lamb and E. van Wijk (Australia)
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Assessment models for Antarctic toothfish (Dissostichus mawsoni) in the Ross Sea including data from the 2005/06 season
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 ... ), using revised catch, CPUE, catch-at-age and tag-recapture data from New Zealand vessels. The updated ... entirely due to the impact of the catch-at-age data from the shelf fishery. Parameterising the model to ...
Meeting Document : WG-FSA-06/60 : Author(s): A. Dunn and S.M Hanchet (New Zealand)
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Standardised CPUE analysis of Antarctic toothfish (Dissostichus mawsoni) fishery in the Ross Sea for the years 1997/98 to 2004/05
Abstract: The Ross Sea toothfish fishery has operated during the Antarctic summer (November–May ... per hook) have been carried out in 2004 calculated CPUE indices for the 1997–98 to 2003–04 fishing ... years in Subarea 88.1 and 88.2. This report revises and updates the previous analysis with the addition ... of data from the 2005 season for the Ross Sea (Subarea 88.1 and SSRUs 88.2 A–B) using data sets based ...
Meeting Document : WG-FSA-05/32 : Author(s): A. Dunn and N.L. Phillips (New Zealand)
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The applicability of international conservation instruments to the establishment of marine protected areas in Antarctica
, and thus include Antarctica within the scope of a worldwide system of marine protected areas. However ... or even impossible because of the area’s unique political situation and existing regimes. The ... provisions of many international conservation agreements are designed to be implemented through the national ... jurisdiction of adhering States within their territorial waters or exclusive economic zones, based on the ...
Meeting Document : SC-CAMLR-XXIII/BG/30 : Author(s): Delegation of the United Kingdom
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The Role of Fish as Predators of Krill (Euphausia superba) and Other Pelagic Resources in the Southern Ocean
Abstract: First attempts were made in the early 1980’s to estimate the krill and pelagic food ... consumption by Antarctic demersal fish. These estimates were extended to the mesopelagic realm and the high ... -Antarctic Zone in the late 1980’s and early 1990’s when these areas were exploited commercially and a larger ... number of food studies were conducted. Currently, the best estimates of krill consumption by fish are 23 ...
Meeting Document : CCAMLR-IWC-WS-08/09 : Author(s): Collins, M.A., Williams, R., Agnew, D.J., Kock, K.-H., Belchier, M., Shust, K.V., Welsford, D., Hanchet, S., Pshenichnov, L., Barrera-Oro, E.
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Proposal to continue the time series of research surveys to monitor abundance of Antarctic toothfish in the southern Ross Sea, 2018–2022
Abstract: This paper proposes to continue the Ross Sea shelf toothfish survey for the next five ... years, 2018–2022. The first objective of the survey is to monitor toothfish recruitment in the southern ... Ross Sea (core strata). This is a continuation of the yearly time series of research surveys of these ... strata carried out since 2012. It is important to continue the time series as the data collected provide ...
Meeting Document : WG-FSA-18/41 : Author(s): S.M. Hanchet, K. Large, S.J. Parker, S. Mormede and A. Dunn
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Further investigations in the assessment of Antarctic toothfish (Dissostichus mawsoni) in Subarea 88.2 SSRUs 88.2C–H for the years 2002–03 to 2012–13
Abstract: This paper presents further investigations of the Bayesian sex and age structured ... 88.2C, D, E, F, G, and H (SSRUs 88.2C–H). Annual age-length keys were applied, and the time trends in ... the tag-derived biomass index were investigated. The impact of hypothesised stock structure, fish ... movement, tag mixing and the potential for localised depletion on the stock assessment were also ...
Meeting Document : WG-SAM-14/29 : Author(s): S. Mormede, A. Dunn and S.M. Hanchet (New Zealand)