Resultados de la búsqueda
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RESEARCH PLAN AND RESULTS OF PRELIMINARY OBSERVATION ABOUT THE POSSIBILITY OF ANTARCTIC KRILL ESCAPEMENT FROM A TRAWL NET
on a trawl net of a Japanese commercial trawler, and started observation to collect video images of ... krill passage through the rope and netting parts of the trawl net. Preliminary examination of video ... images obtained via satellite-linked transmission indicated very low incidence of krill escapement from ... AND RESULTS OF PRELIMINARY OBSERVATION ABOUT THE POSSIBILITY OF ANTARCTIC KRILL ESCAPEMENT FROM A ...
Meeting Document : WG-EMM-11/36 : Autor(es): K. Fujita and S. Hasegawa (Japan)
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CCAMLR process of risk assessment to minimise the effects of longline fishing mortality on seabirds
Abstract: We describe the process used in the fisheries management system of the Convention for ... the Conservation of Antarctic Marine Living Resources (CCAMLR) to minimise seabird bycatch, and the ... risk assessment methodology developed to assist this. We examine the progress of several Regional ... system of management among the RFMOS covered in this review, and has made the most demonstrable progress ...
Meeting Document : WG-FSA-07/P2 : Autor(es): S.M. Waugh, G.B. Baker, R. Gales and J.P. Croxall (Mar. Pol., in press)
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Standing stock, biology, diet and spatial distribution of demersal finfish from the 2003 US AMLR bottom trawl survey of the South Shetland Islands (Subarea 48.1)
bottom trawl surveys of the South Shetland Islands (Subarea 48.1) during the 1998, 2001, and 2003 austral ... demersal finfish species have remained relatively consistent across all surveys. Shelf regions of ... important feeding areas lie to the west and north of Elephant Island and to the north of King George Island ... greater than 200 meters. Estimates of total stock biomass from these surveys were computed for eight ...
Meeting Document : WG-FSA-03/38 : Autor(es): C.D. Jones (USA), K.-H. Kock, (Germany), J. Ashford, A. DeVries, K. Dietrich (USA), S. Hanchet (New Zealand), T. Near, T. Turk (USA) and S. Wilhelms (Germany)
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An examination of latitudinal variation in the growth rates of Antarctic toothfish (Dissostichus mawsoni) in the Ross Sea
Abstract: Following a finding that a small sample of aged Dissostichus mawsoni from McMurdo Sound ... conducted. Length-at-age of Dissostichus mawsoni was compared across five zones in a 15.5° latitudinal range ... (62.5°–78.0° S). Between-zone comparisons were confounded by marked differences in the age structure of ... catches from the northern and southern sections of the range, and by the relatively high level of variance ...
Meeting Document : WG-FSA-03/30 : Autor(es): P.L. Horn (New Zealand)
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The diet of the Antarctic fur seal Arctocephalus gazella at Harmony Point, South Shetland Islands: evidence of opportunistic foraging on penguins?
Abstract: The diet of non-breeding male Antarctic fur seals Arctocephalus gazella was ... investigated at Harmony Point, Nelson Island, South Shetland Islands, by the analysis of 523 scats collected ... from January to March 2001 and 2002. The composition of the diet was diverse and both, pelagic and ... ), cephalopods (mainly squids) and gastropods. Among fish, Myctophids represented 86.5% and 65.8% of the fish ...
Meeting Document : WG-EMM-02/11 : Autor(es): R. Casaux, L. Bellizia and A. Baroni (Argentina)
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Examination of the gut contents of Patagonian toothfish (Dissostichus eleginoides) from the toothfish pot fishery trials around South Georgia
CCAMLR, an understanding of the trophic relationships of exploited species is vital. Toothfish ... the trophic relationships of this species, stomach analyses were performed on individuals caught ... individuals were examined and their stomach contents identified. The proportion of individuals found with ... sizes. This was hypothesised to result from fish caught in pots suffering reduced levels of trauma. The ...
Meeting Document : WG-FSA-00/25 : Autor(es): G. Pilling, T. Daw, M. Purves, D. Agnew and J. Xavier (United Kingdom)
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A revision of yield and catch controls for managing the mackerel icefish (Champsocephalus gunnari) fishery in the vicinity of Heard Island and McDonald Islands
Abstract: A recent 2000 survey of mackerel icefish in the vicinity of Heard Island enabled a ... revised estimate of yield for the coming 2 seasons. While the biomass of icefish appears lower than in ... previous years, it is dominated by a strong age 2 year class. Estimates of yield for the Heard Island ... fishing seasons. The results of the 2000 survey confirm the need to retain a closure to fishing on Shell ...
Meeting Document : WG-FSA-00/41 : Autor(es): A. Constable, R. Williams, T. Lamb and E. van Wijk (Australia)
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THE SELECTION OF TRIPS BASED ON DATA METRICS FOR THE ASSESSMENT OF ANTARCTIC TOOTHFISH IN THE ROSS SEA
Abstract: A dataset for the 2009 assessment of Antarctic toothfish (Dissostichus mawsoni) in the ... Ross Sea Region was selected on the basis of data quality metrics for individual trips. Initial ... informative datasets were selected comprising trips with high (above median) rates of recovery of previously ... dataset. Where the initial informative dataset was selected comprising trips with above median rate of tag ...
Meeting Document : WG-FSA-09/35 : Autor(es): D.A.J. Middleton (New Zealand)
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ANALYSIS OF ICE-FISH (CHAMPSOCEPHALUS GUNNARI) SPATIAL DISTRIBUTION FOR OPTIMIZATION OF THE BOTTOM TRAWL SURVEY SAMPLING
Abstract: The spatial distribution characteristics of ice-fish in the near-bottom layer are ... compared. It is shown the possibility to estimate the bottom trawl efficiency. The high heterogeneity of ... horizontal and vertical fish distribution in the near-bottom layer of the survey area is shown. Influence of ... addition, the author discuses the results of bottom trawl surveys carried out in the South Georgia area ...
Meeting Document : SG-ASAM-09/07 : Autor(es): S. Kasatkina (Russia)
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Revision of the commercial catch at age of the Antarctic icefish Champsocephalus gunnari over the period 1976/77 to 1990/91
Abstract: A revision of the calculation of total international catch at age of Champsocephalus ... gunnari over the period 1976/77 to 1990/91 is presented. This uses iterative application of two age length ... proposed that the revised catch at age be used for future assessment of the C. gunnari fishery at South ... Georgia using VPA. Author(s): G.B. Parkes (United Kingdom) Title: Revision of the commercial catch at ...
Meeting Document : WG-FSA-93/29 : Autor(es): G.B. Parkes (United Kingdom)