Résultats de la recherche
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Preliminary results from the International Synoptic Krill Survey in Area 48, 2019
August 2018. Author(s): G. Macaulay, G. Skaret, T. Knutsen, O.A. Bergstad, B. Krafft, S. Fielding, S.G ... stations. Acoustic transects and trawling were carried out as per survey procedures developed in 2018 ... . Backscatter from krill were delineated using the 'swarms' method and integrated to produce ... . Choi, S. Chung, K. Demianenko, V. Podhornyi, K. Vishnyakova, L. Pshenichnov, A. Chuklin, A. Shishman ...
Meeting Document : WG-EMM-2019/47 : Auteur(s): G. Macaulay, G. Skaret, T. Knutsen, O.A. Bergstad, B. Krafft, S. Fielding, S.G. Choi, S. Chung, K. Demianenko, V. Podhornyi, K. Vishnyakova, L. Pshenichnov, A. Chuklin, A. Shishman and M.J. Cox
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AGE ESTIMATION AND LEAD-RADIUM DATING OF ANTARCTIC TOOTHFISH (DISSOSTICHUS MAWSONI)
rates, remain unknown. In this study, Antarctic toothfish were aged using otolith age estimation ... to at least 39 years of age. Estimated and radiometric ages were in close agreement, confirming age ... used as an independent chronometer to determine age. Age estimates indicated Antarctic toothfish live ... growing Antarctic toothfish fishery. Author(s): C.M. Brooks, A.H. Andrews, J.R. Ashford, G.M. Cailliet, N ...
Meeting Document : WG-FSA-08/17 : Auteur(s): C.M. Brooks, A.H. Andrews, J.R. Ashford, G.M. Cailliet, N. Ramanna and C. Lundstrom (USA)
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Detection of systematic change in Adélie penguin foraging trip duration: consequences of high inter-annual variability and usefulness of ice cover as a covariate
Abstract: Power analyses were carried out using a 12 year data set from the Béchervaise Island ... temporal change in CEMP Parameter A5 (penguin foraging trip duration). Two different types of systematic ... sudden step change in parameter values from one average level to another. Modelling showed that change of ... three years or alternatively, with equal power, a 3.75% annual increase in trip duration after 12 years ...
Meeting Document : WG-EMM-05/22 : Auteur(s): J. Clarke, C. Southwell and L.M. Emmerson (Australia)
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TEMPORAL CLARIFICATION OF THE TRANSITION FROM BLUE PHASE FINGERLING TO EARLY JUVENILE BROWN PHASE IN NOTOTHENIA ROSSII FROM THE SOUTH SHETLAND ISLANDS
sea is less than one year before migration to the demersal nearshore habitat; 2) the first well ... was composed by blue phase fingerlings of 7-7.6 cm (TL) and age group 0 year and demersal young brown ... the interpretation of the rings, particularly in the central area of the scale. To clarify two issues ... ring deposited after the first winter during the second year, attributable to a shift of habitat from ...
Meeting Document : WG-FSA-09/32 : Auteur(s): E. Barrera-Oro, E. Moreira, N. Alescio and E. Marschoff (Argentina)
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Age and growth in length of Micromesistius australis, Norman, 1937 (Pisces, Gadidae), in the southern zone of the Argentine Sea
that there were growth differences between both sexes by the analysis "t" of Student, two ... curves were made up; one for males and the other for females. A linear regression was made and the ... )] giving Lt in cm and t in years. For the estimation of the general equation parameters the first 15 age ... corresponding to the females were higher than those of the males in all the age classes. Author(s): Delegation ...
Meeting Document : SC-CAMLR-V/BG/31 : Auteur(s): Delegation of Argentina
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Results of the research for the exploratory longline fishery for Dissostichus spp. in SSRUs C and E in Division 58.4.1 in 2012/13 of Korea
Abstract: In the Division 58.4.1 there are two stocks of Dissostichus mawsoni; one extends from ... the SSRU 58.4.1C to the SSRU 58.4.2A, and the other one to the SSRU 58.4.1H. The population sizes were ... trotline and Spanish line, and caught only two D. mawsoni by trot line during 19-21, February. In SSRU ... 58.4.1C-a, we caught 30 D. mawsoni by five sets of Spanish line and 56 D. mawsoni by six sets of trot line ...
Meeting Document : WG-SAM-13/28 : Auteur(s): I.J. Yeon, Y.J. Kwon, D.W. Lee, S.G. Choi, and K.J. Seok (Republic of Korea)
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Summary of monitoring and research effort and preliminary results from the 2019 Scotia Sea krill monitoring survey with FV Cabo de Hornos
distribution were dominated by two modes, one of very large animals averaging around 55 mm dominating in the ... of the large scale survey area were visited, and about 80 % of the coverage planned for the vessel ... humpback whales. Author(s): G. Skaret, M. Martinussen, G. McCallum, R. Pedersen, J. Rønning, A.L. Donoso ...
Meeting Document : WG-EMM-2019/46 : Auteur(s): G. Skaret, M. Martinussen, G. McCallum, R. Pedersen, J. Rønning, A.L. Donoso, O.A. Bergstad and B.A. Krafft
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Growth of mackerel icefish (Champsocephalus gunnari) and age-size composition of populations in subarea of South Georgia
catches were based on fish of two contiguous year classes, strong 1984 year class and middle 1983 year ... biomass, judging from the catches, was rather low. Possibly, the abundance of one or another icefish year ... represented by fish of two contiguous age groups. It was shown that in the 1980s during a number of years the ... class. These year classes appeared against a background of the intensive icefish fishery, and krill ...
Meeting Document : WG-EMM-03/60 : Auteur(s): K.V. Shust and E.N. Kuznetsova (Russia)
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Growth of mackerel icefish (Champsocephalus gunnari) and age-size composition of population in subarea of the South Georgia
catches were based on fish of two contiguous year classes, strong 1984 year class and middle 1983 year ... biomass, judging from the catches, was rather low. Possibly, the abundance of one or another icefish year ... represented by fish of two contiguous age groups. It was shown that in the 1980s during a number of years the ... class. These year classes appeared against a background of the intensive icefish fishery, and krill ...
Meeting Document : WG-FSA-SAM 03/7 : Auteur(s): K.V. Shust and E.N. Kuznetsova (Russia)
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Report on fish by-catch on exploratory fishing in Divisions 58.4.1 and 58.4.2
undertaken in Divisions 58.4.1 and 58.4.2 during the 2012 to 2018 seasons. Fish by-catch comprised 14 species ... or groups of species. In 2018, by-catch represented 12% of the total catch (43 tonnes over 307 tonnes ... changes within research blocks. Length at 50% maturity was estimated for the two most common species of ... eastern blocks where Macrourus CPUE also increased in the last 3 years. Macrourus CPUE was 23kg/1000 hooks ...
Meeting Document : WG-FSA-18/28 : Auteur(s): C. Péron, P. Yates, D. Maschette, C. Chazeau, P. Ziegler, D. Welsford, N. Gasco and G. Duhamel