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Low breeding success of the Adélie penguin at Béchervaise Island in the 1998/99 season
Paper Title: Low breeding success of the Adélie penguin at Béchervaise Island in the 1998/99 ... season Abstract / Description: This paper describes the diet and foraging behaviour of Adelie penguins ... percent of nests with eggs failed during the three weeks following first hatch. A breeding success of 0.43 ... , foraging trip duration and diet suggests that the death of chicks during the guard stage was due to an ... < 0.05) (Table 3). No other seasons differed significantly among males; for females the only other ... availability since there has been no krill fishery in the Mawson area since 1988 (CCAMLR, 1998; CCAMLR, 2000 ... the weights averaged within five-day age classes. No account is taken of chicks that died subsequent ... ). Bechervaise Island (67"35'S, 62O48'E) is the site of a CEMP program which investigates primarily predator ...
Science Journal Paper : CCAMLR Science, Volume 7 (CCAMLR Science, Volume 7) : 151–167 : Autor(es): Irvine, L.G., J.R. Clarke and K.R. Kerry
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A history of the exploitation of the Ross Sea, Antarctica
occurred in slope waters, and therefore their demise from whaling does not apply to the Ross Sea. No ... with effects on the ecosystem recently becoming evident. There is probably no other ocean area where ... Abstract: Recent analyses of anthropogenic impacts to marine systems have shown the Ross Sea to ... be the least affected stretch of ocean on Earth, although historical effects were not included in the ...
Meeting Document : WG-EMM-09/P03 : Autor(es): D.G. Ainley
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Summary of the toothfish fishery and tagging program in the Ross Sea region (Subarea 88.1 and SSRUs 882A–B) through 2017/18
distributions showed no trend over time in the shelf, slope or northern areas. Patterns in the age frequency of ... the catch showed no consistent pattern of trend through time, but showed interannual variability. This ... Abstract: This report summarises the toothfish fishery in the Ross Sea region (Subarea 88.1 and ... SSRUs 88.2AB) together with biological characteristics of the catch of Antarctic toothfish through the ...
Meeting Document : WG-FSA-18/46 : Autor(es): S. Mormede and S. Parker
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Hook selectivity in the longline fishery of Dissostichus eleginoides (Nototheniidae) off the Chilean coast
fisheries of the patagonian toothfish Dissostichus eleginoides related with the selectivity of the type and ... size of hooks used in the longlines. Original data obtained during 1991 on the coast of Valdivia, South ... East Pacific, are added. The data show that the circle hooks are far more efficient that the right ones ... . The size frequency of the population collected with straight hooks No3 and 4 are not significatively ...
Meeting Document : WG-FSA-91/11 : Autor(es): C.A. Moreno (Chile)
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An exploration of the biological data used in the CCAMLR Subarea 48.3 Patagonian toothfish stock assessments
change. The Working Group recommended that key assessment parameters be reviewed and that changes in the ... fishery dynamics that would impact their estimation be explored. The biological productivity parameters in ... subarea 48.3 are analysed here, particularly whether the proportion of females in the catch, maturity at ... length, length-weight relationships and growth rates have changed over time and how the fishery dynamics ...
Meeting Document : WG-SAM-2019/32 : Autor(es): E. MacLeod, K. Bradley, T. Earl, M. Söffker and C. Darby
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PROPOSAL TO VARY THE REQUIREMENT TO TEST SINK RATES FOR INTEGRATED WEIGHT LONGLINE (IWL) GEAR PRIOR TO ENTERING THE CONVENTION AREA
(IWL) before entering the Convention Area is an impost on fishers that is no longer warranted. Testing ... complied with the required sink rate and that there have been no changes since then to the IWL, other ... Abstract: This paper proposes that, for fishers whose vessels comply with certain conditions, the ... requirement in Protocol C1 of Conservation Measure 24-02 to test the sink rate of integrated weight longlines ...
Meeting Document : WG-FSA-08/36 : Autor(es): I. Hay (Australia)
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Investigating the uncertainty of age determinations for Patagonian toothfish (Dissostichus eleginoides) and the implications for stock assessment
these three methods along with assuming no ageing error. The Gamma and revised Candy methods both ... the revised Candy and Gamma methods. The constant c.v. method and assuming no ageing error produced ... Abstract: We revised the method of Candy et al. (2012) to estimate the ageing error matrix ... (misclassification matrix) to address some issues regarding true ages not being the mode at the extremes of the ...
Meeting Document : WG-FSA-14/46 : Autor(es): P. Burch, P. Ziegler, W. de la Mare and D. Welsford (Australia)
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A summary of the commercial fishery for mackerel icefish Champsocephalus gunnari in Subarea 48.3 during the 1997/98 season
0.21 tonnes. The vessel's fishing master had no experience of fishing for icefish and was not well ... Abstract: During the 1 997198 season, one vessel, Chilean registered stern trawler Betanzos ... days between 25 December 1997 and 5 January 1998. The total catch of C. gunnari was 5.04 tonnes in 34 ... hauls. 67% of this catch was taken in just two hauls, confirming the patchy distribution of this species ...
Meeting Document : WG-FSA-98/53 : Autor(es): G. Parkes, A. King and C. Jones (United Kingdom)
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A characterisation of the toothfish fishery in the Ross Sea region (Subarea 88.1 and SSRUs 88.2A–B) to 2016–17
show no trend on the Shelf, Slope or North. Age frequencies show no uniform trend and are probably ... Abstract: This report summarises fishing catch and effort in the Ross Sea region (Subarea 88.1 ... and SSRUs 882AB) together with biological characteristics of the catch of Antarctic toothfish through ... the 2017 season. In 2017, sea ice constraints were minimal and catch rates were the second highest on ...
Meeting Document : WG-FSA-17/07 : Autor(es): S. Parker and S. Mormede
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Fine-scale genetic investigation into Patagonian toothfish structure within the west Indian Ocean sector of the Southern Ocean
from 1 to 21. There was no evidence for significant mtDNA heterogeneity among the four collections and ... microsatellite loci among the four collections. Both mtDNA and microsatellite FST values indicated no population ... Abstract: Molecular markers were employed to investigate the fine-scale stock structure of ... Patagonian toothfish in the west Indian Ocean sector of the Southern Ocean. Four collections of toothfish ...
Meeting Document : WG-FSA-03/66 : Autor(es): S.A. Appleyard, R. Williams and R.D. Ward (Australia)