Resultados de la búsqueda
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Depth and temperature preferences of Antarctica toothfish (Dissostichus mawsoni) from a pilot popup satellite archival tag study in the Mawson Sea
depth range of 326 to 1824 m and a temperature range of-1.95 to 0.7°C. Through available depth and ... appeared to have remained in the Mawson Sea area for the majority of time at liberty. The recaptured ... warranted to observe similar ascents in other individuals, and be analyzed in the greater context of ... reproductive ecology of Antarctic toothfish. To this end, a tagging configuration is proposed to target logging ...
Meeting Document : WG-FSA-18/22 : Autor(es): C.H. Lam, S.-G. Choi, E. Kim, S. Chung, J. Lee and D.H. An
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Summary of the toothfish fishery and tagging program in the Amundsen Sea region (SSRUs 882C–H) to 2018/19
characterisation of the fishery showed a truncation of the right-hand limb of the age distribution between 2004 and ... 2014. Few age data are currently available after 2014. We recommend that further ageing of toothfish in ... -year Chapman estimates and allowing a maximum of 20% in the catch limit for 88.2H and research block ... 882_2 are: 882H: 240 t catch and allowing a maximum of 20% change in the catch limit from 200 t ...
Meeting Document : WG-FSA-2019/12 : Autor(es): J. Devine and S. Parker
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USING AUTOMATED CAMERAS AS A COST-EFFECTIVE MEANS OF EXTENDING LAND-BASED PREDATOR MONITORING
and reliable tools for surveillance and monitoring. This paper describes (1) the kinds of observations ... developed for use in the extreme conditions of Antarctica, (2) a preliminary assessment of the utility of ... expand the spatial extent of Adélie penguin monitoring, and to extend monitoring to additional land-based ... ) Title: USING AUTOMATED CAMERAS AS A COST-EFFECTIVE MEANS OF EXTENDING LAND-BASED PREDATOR MONITORING ...
Meeting Document : WG-EMM-11/37 : Autor(es): C. Southwell, L. Emmerson and K. Newbery (Australia)
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Autoliners and seabird by-catch: do line setters increase the sink rate of integrated weight longlines?
effectiveness of line setters in increasing sink rates of IW longlines. Time-depth recorders were deployed along ... magazines of line set with and without a line setter using a paired treatment design. Sink rates of ... longlines set with and without a line setter were identical, including in the first few metres of the water ... several metres closer to the stern of vessels, thereby increasing slightly (Author(s): G. Robertson ...
Meeting Document : WG-FSA-07/13 : Autor(es): G. Robertson (Australia), J. Williamson, M. McNeill (New Zealand), S. Candy (Australia) and N. Smith (New Zealand)
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Analysis of krill catch data from continuous and conventional trawls by the Saga Sea and Atlantic Navigator
Abstract: In this paper we analyse data on the distribution of catches, the size of krill and ... bycatch of larval fish taken by the Saga Sea fishing with continuous trawls in 2006, and the Atlantic ... Navigator which fished in 2005 using both continuous trawling and conventional trawling. The sizes of krill ... are few data for comparison, the bycatches of larval/juvenile fish in the continuous trawl also appear ...
Meeting Document : WG-FSA-06/57 : Autor(es): D.J. Agnew, A. Payne, J. Hooper and J. Roe (United Kingdom)
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Age estimation and maturity of the ridge-scaled macrourid (Macrourus whitsoni) from the Ross Sea
Abstract: Juveniles of the macrourid rattail Macrourus whitsoni were collected by the NIWA ... research vessel Tangaroa during the BioRoss survey of the Western Ross Sea and Balleny Islands, with the ... purpose of analyzing the otoliths to generate more accurate age estimates for this species. Intensive ... analysis of otoliths from small specimens greatly increased confidence in the interpretation of the zone ...
Meeting Document : WG-FSA-05/20 : Autor(es): P.M. Marriott, M.J. Manning and P.L. Horn (New Zealand)
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Geographical differences in the condition, reproductive development, sex ratio, and length distribution of Antarctic toothfish (Dissostichus mawsoni) from the Ross Sea, Antarctica (CCAMLR Statistical Subarea 88.1)
Abstract: A number of morphological and reproductive measurements made seasonally on Antarctic ... seasons aboard the autoliner San Aotea II have been analysed. Results of this study indicate measurable ... differences in a number of indices from toothfish found on the Ross shelf proper, as distinct from those ... part of the Ross Sea showed that this component of the population had a unimodal length distribution at ...
Meeting Document : WG-FSA-05/52 : Autor(es): J.M. Fenaughty (New Zealand)
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The diet of Antarctic fur seals, Arctocephalus gazella, at King George Island, during the summer–autumn period
Abstract: The diet of non breeding male Antarctic fur seals, Arctocephalus gazella, was ... , krill and fish were the most frequent prey, occurring in an average of 97% and 69% of samples (n=128 ... ), followed by Cephalopods (12%). Myctophids constituted almost 90% of the fish predated, being Electrona ... fish species associated with krill swarms. A seasonal change observed in the relative proportions of ...
Meeting Document : WG-EMM-04/4 : Autor(es): G.A. Daneri, A.R. Carlini, C.M. Hernandez and A. Harrington (Argentina)
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Brief information on the results of the bottom trawl and trawl–acoustic surveys carried out by STM Atlantida in the South Georgia subarea (48.3) during January to March 2002
Abstract: The results of researches carried out in expeditions of S?? “?tlantida” in summer ... -autumn period of the southern hemisphere from 30 January to 14 March 2002 are presented. These researches ... included the bottom trawl survey on the shelf of South Georgia, Shag Rocks and Black Rocks (53?10-55?30 S ... Georgia shelf (53?10- 55?30 S, 34?00-39?40 W); series of oceanographic observations. Author(s): V.N ...
Meeting Document : WG-FSA-02/19 : Autor(es): V.N. Shnar, V.A. Khvichia and A.P. Malyshko (Russia)
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Some comments on the procedure of krill target strength assessment in echosurveys
Abstract: The impact of midwater trawl selectivity and catchability upon TS and TS 1 kg estimates ... . Application of the proposed method of mean weighted TS 1 kg estimation provides the biomass estimation ... : assessment of MSBS (MVBS) acoustic parameter distribution and krill length (weight) distribution in the study ... area. The latter requires to settle a complex of problems which allow to consider the trawl as a ...
Meeting Document : WG-EMM-98/21 : Autor(es): S.M. Kasatkina (Russia)