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Report on a random stratified trawl survey to estimate distribution and abundance of Dissostichus eleginoides and Champsocephalus gunnari conducted in the Heard Island region (Division 58.5.2), May–June 2007
stations chosen for sampling in each stratum. This paper describes the conduct of the survey on the FV ... Abstract: Since the commencement of commercial fishing in Australian waters on the Heard Island ... plateau in 1997 an annual random stratified trawl survey (RSTS) has been conducted to assess the stocks of ... survey had two main aims: • to assess the abundance of juvenile and adult Dissostichus eleginoides on the ...
Meeting Document : WG-FSA-07/46 : Autor(es): G.B. Nowara and T. Lamb (Australia)
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Distribution and diet of juvenile Patagonian toothfish on the South Georgia and Shag Rocks shelves (Southern Ocean)
Abstract: The distribution and diet of juvenile (<750 mm) Patagonian toothfish are described ... from 4 annual trawl surveys (2003-06) around the island of South Georgia in the Atlantic sector of the ... Southern Ocean. Recruitment of toothfish varies inter-annually, and a single large cohort dominated during ... the four years surveyed. Most juveniles were caught on the Shag Rocks shelf to the NW of South Georgia ...
Meeting Document : WG-FSA-07/P4 : Autor(es): M.A. Collins, K.A. Ross, M. Belchier, K. Reid. (Mar. Biol., 152: 135–147 (2007)).
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Histopathology of Antarctic krill (Euphausia superba) bearing black spots
onboard a krill fishing vessel in the winter of 2003 and 2006 in the South Georgia region, the Antarctic ... Ocean, approximately 2-5% of sub-samples of 100 krill bore small black spots. The black spots were most ... often found on the cephalothorax of the body. Three bacteria were isolated from these black spots, and ... classified into either Psychrobacter or Pseudoalteromonas by the sequences of 16S rRNA genes. Histological ...
Meeting Document : WG-EMM-07/29 : Autor(es): S. Miwa, T. Kamaishi, T. Matsuyama, T. Hayashi and M. Naganobu (Japan)
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Modelling growth of Antarctic krill: a new approach to describing the growth trajectory
from population-level data consisting of modal lengths obtained from a time sequence of length ... frequency samples. We develop an alternative approach to predicting the trajectory of length over time using ... a step-growth function that combines models of instantaneous growth rate (IGR) at moult calibrated ... from direct measurements of individual pre- and post-moult krill sampled from the wild with a model of ...
Meeting Document : WG-EMM-05/27 : Autor(es): S. Candy and S. Kawaguchi (Australia)
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Modelling the predator–prey interactions of krill, baleen whales and seals in the Antarctic ecosystem
Abstract: The history of human harvests of seals, whales, fish and krill in the Antarctic is ... summarized briefly, and the central role played by krill emphasized. The background to the hypothesis of a ... that has become available since the postulate was first advanced is discussed. The objective of the ... ) species. The model commences in 1780 (the onset of fur seal harvests) and distinguishes the Atlantic ...
Meeting Document : WG-EMM-05/34 : Autor(es): M. Mori and D.S. Butterworth (South Africa)
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NPOA-Seabirds Science Advisory Group Final recommendations on fields of research for the NPOA Medium Term Research Plan 2006/07–2010/11
Abstract: Following the review by Alderman (unpublished) and Bull (unpublished) of research into ... seabird-fishery interactions, a set of recommendations were made by the Science Advisory Group to the ... National Plan of Action – Seabirds. The recommendations were developed under six main topic areas: a ... ) mitigation research; b) estimation of bycatch; c) population estimation and modelling; d) foraging ecology; e ...
Meeting Document : WG-FSA-05/46 : Autor(es): S. Waugh (Convener) (New Zealand)
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Evaluating methods to assess yield of Patagonian toothfish (Dissostichus eleginoides) in CCAMLR Division 58.5.2
Abstract: This paper describes aspects of the Management Strategy Evaluation (MSE) being ... will be presented in an updated version of this paper provided to the workshop. Author(s): A.J ... currently being used for Patagonian toothfish in Division 58.5.2, the types of data and observations of the ... types of methods being used to assess yield of toothfish according to the CCAMLR decision rules. We ...
Meeting Document : WG-FSA-05/69 : Autor(es): A.J. Constable, I. Ball, B. Raymond, S. Candy, R. Williams (Australia) and A. Dunn (New Zealand)
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Descriptive analysis of the Antarctic toothfish (Dissostichus mawsoni) tagging scheme in the Ross Sea for the years 1997/98 to 2003/04
Abstract: A descriptive analysis of the toothfish tagging programme carried out in the Ross Sea ... Zealand vessels were unavailable at the time of the analysis. A total of 4903 Antarctic toothfish have ... two years, when tagging has been part of the Conservation Measure, New Zealand vessels have tagged ... between 1.0 and 1.37 toothfish per tonne of catch. Tagging rates by area over the past three years have ...
Meeting Document : WG-FSA-SAM-05/10 : Autor(es): A. Dunn, S.M. Hanchet and K. Maxwell (New Zealand)
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Electronic monitoring of seabird interactions with trawl third-wire cables on trawl vessels – a pilot study
third-wire cables on trawl vessels. This pilot study involved field testing of EM systems on shoreside ... Economic Zone. EM systems, consisting of two closed circuit television cameras, GPS, hydraulic and winch ... one-month period in the fall of 2002. Detailed analysis of about 200 hours of fishing imagery occurred ... cables. The EM system provided imagery of sufficient quality to detect the presence, abundance, and ...
Meeting Document : WG-FSA-04/23 : Autor(es): H. McElderry, J. Schrader, D. McCullough, J. Illingworth, S. Fitzgerald and S. Davis (USA)
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Electronic monitoring of seabird interactions with trawl third-wire cables on trawl vessels – a pilot study
third-wire cables on trawl vessels. This pilot study involved field testing of EM systems on shoreside ... Economic Zone. EM systems, consisting of two closed circuit television cameras, GPS, hydraulic and winch ... one-month period in the fall of 2002. Detailed analysis of about 200 hours of fishing imagery occurred ... cables. The EM system provided imagery of sufficient quality to detect the presence, abundance, and ...
Meeting Document : WG-FSA-04/23text : Autor(es): H. McElderry, J. Schrader, D. McCullough, J. Illingworth, S. Fitzgerald and S. Davis (USA)