Résultats de la recherche
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An analysis of early change in the blubber thickness of minke whales as an indicator of krill availability
. Comparison based on the difference between the thickness in December in successive years was proved valid, by ... Abstract: Data on blubber thickness measured on 26,751 minke whales caught in the IWC Areas III ... significant relation were detected between blubber thickness and body length in both mature males and pregnant ... for these factors, considerable yearly variations were shown in the thickness in December, in which 12 ...
Meeting Document : WG-CEMP-87/18 : Auteur(s): Y. Shimadzu (USA)
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Research plan for the 2017/18 exploratory longline fishery of D. mawsoni in Subarea 48.6 by South Africa and Japan
Abstract: South Africa and Japan made the next season’s (2017/18) research plan in Subarea 48.6 ... on 10 th May, 2017. The estimated median stock size in research block 48.6_2, 48.6_3, and 48.6_4 was ... 5657.54, 5162.26, and 8211.25 tonnes, respectively, in Chapman method considering tags released in the ... . The estimated median stock size in block 48.6_2, 48.6_3, and 48.6_4 was 801.17, 124.71, and 981.91 ...
Meeting Document : WG-SAM-17/03 : Auteur(s): Delegations of Japan and South Africa
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Status of the krill stock around Elephant Island in 1991/92 and 1992/93
Abstract: Krill stock composition and distribution patterns in the vicinity of Elephant Island ... appears to be a recurring and predictable aspect of the krill stocks in the Antarctic Peninsula region ... . The length frequency distributions and maturity stage composition reflected relatively good year class ... success from the 1990/91 spawning season but poor success from 1991/92. Year class success from these and ...
Meeting Document : WG-KRILL-93/08 : Auteur(s): V. Loeb (USA) and V. Siegel (Germany)
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Has krill fishing the potential to adversely affect recruitment in Antarctic notothenioid fishes?
Abstract: A few years after krill (Euphausia superba) fishing had started in 1972/73, it became ... 25 years later WG-FSA is still not in the position to estimate the amount of fish by-catch reliably ... by-catch in fisheries targeting krill. The species composition of fish by-catch in krill fisheries is ... well-known from Polish investigations in the late 1970s and the 1980s and from Japanese, Ukrainian, and ...
Meeting Document : WG-FSA-14/66 : Auteur(s): K.-H. Kock (Germany) and C.D. Jones (USA)
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The Continuous Plankton Recorder in the Southern Ocean: a comparative analysis of zooplankton communities sampled by the CPR and vertical net hauls along 140°E
each of 19 stations: 0–20, 20–50, 50–100 and 100–150 m. A Continuous Plankton Recorder (CPR) was ... . Zooplankton in the top 150 m of the water column demonstrated strong, small-scale, vertical distribution ... variation in abundance between NORPAC depth zones (average = 82 ± 47 individuals m–3), while abundance was ... substantially higher in the CPR samples (average = 144 ± 103 individuals m–3), despite it under-sampling fast ...
Meeting Document : WS-BSO-07/P5 : Auteur(s): Hunt, B.P.V and G. Hosie
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Towards a strategic framework for assessing uncertainty in ecosystem dynamics models: objectives are sensitive too
candidate feedback management approaches for the Antarctic krill fishery in the southern Drake Passage and ... advice each required values for 2,311 distinct inputs. In the absence of guidance about management ... reference points, the modellers provided advice in terms of 41 illustrative reference points intended to ... . There is a global need to develop strategic frameworks for assessing uncertainty in ecosystem dynamics ...
Meeting Document : WG-EMM-12/20 Rev. 1 : Auteur(s): S. Hill and J. Matthews (United Kingdom)
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Analysis of the diet of Champsocephalus gunnari in Subarea 48.3, Dr E. Holmberg survey, February 1995
somewhat below the historical years of high abundance, but above than in 1994. Author(s): Marschoff, E ... Abstract: About 1300 stomach contents of the icefish Champsocepha1us gunnari caught in the ... Subarea 48.3 in February 1995, were analyzed using the frequency of occurrence (%) method. Krill ... %), followed in importance by the mysid Thysanoessa sp. (35%) and krill (24%). The picture around SG was found ...
Meeting Document : WG-FSA-95/36 : Auteur(s): Marschoff, E., Barrera-Oro, E., Casaux, R.
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Diet and trophic niche of Macrourus spp. (Gadiformes, Macrouridae) in the Ross Sea region of the Southern Ocean
Abstract: Both Macrourus caml and M. whitsoni are probably abundant and widespread in the Ross ... (henceforth Macrourus spp.) in the Ross Sea region of the Southern Ocean. Samples of stomach contents were ... . Overall, amphipods were the dominant prey found in Macrourus spp. stomachs with an index of relative prey ... carnivorous. Other important prey were copepods (especially for fish with total length less than 30 cm), krill ...
Meeting Document : WG-EMM-12/P03 : Auteur(s): M.H. Pinkerton, J. Forman, D.W. Stevens, S.J. Bury and J. Brown
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Modifications to the Generalised Yield Model in 2004, version GYM501E.EXE
fish at the nominated ‘recruitment age’ (age 4 for toothfish) in each year. The first year in the time ... error does not affect the assessments undertaken in recent years. This paper presents the nature of the ... Abstract: The Generalised Yield Model is used by the WG-FSA in the assessments of Champsocephalus ... gunnari, Dissostichus eliginoides and Euphausia superba. Its current version is GYM501D.EXE. In the course ...
Meeting Document : WG-FSA-04/91 : Auteur(s): A.J. Constable (Australia)
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Summary of incidental mortality associated with fishing activities collected in scientific observer and vessel data during the 2019 season
seal morality event which occurred at the end of the 2018 season. Incidental mortality numbers for ... longline fisheries in which seabird mortalities have been reported are presented with the data from ... associated with fishing activities collected in scientific observer and vessel data during the 2019 season ...
Meeting Document : WG-FSA-2019/16 Rev. 2 : Auteur(s): CCAMLR Secretariat