Résultats de la recherche
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The influence of bait quality on the sink rate of bait used in the Japanese longline tuna fishing industry: an experimental approach
Paper Title: The influence of bait quality on the sink rate of bait used in the Japanese longline ... sink rate of five species of bait used in the Japanese longline tuna fishery in Tasmanian waters. The ... determine the effects of bait size (large versus small) and bait condition (frozen versus thawed) on the ... . The addition of a 20 g lead sinker to a conventional 20 g tuna hook reduced the sink time of bait ... BAIT QUALITY ON THE SINK RATE OF BAIT USED IN THE JAPANESE LONGLINE TUNA FISHING INDLISTRY: AN ... used in the Japanese longline tuna fishery in Tasmanian waters. The effect of adding lead sinkers to ... treatment of the bait prior to deployment. With this in mind, the purpose of this study was to determine ... the sink rates of bait used commonly in the Japanese longline tuna fishing industry in Tasmanian ...
Science Journal Paper : CCAMLR Science, Volume 2 (CCAMLR Science, Volume 2) : 123–129 : Auteur(s): Brothers, N., A. Foster and G. Robertson
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The role of fish as predators of krill (Euphausia superba) and other pelagic resources in the Southern Ocean (submitted to the 2008 Joint CCAMLR-IWC Workshop)
of fish as krill predators in the Southern Ocean is critical to understanding how changes in fish ... by mesopelagic fish in the Atlantic sector of the Southern Ocean. It is clear from this review that ... fish are important predators of krill, in particular the larger myctophids and some channichthyids and ... nototheniids, and that the importance of krill in fish diets varies substantially both with time and location ... in the late 1970s/ early 1980s. Those estimates were constrained by a paucity of biomass estimates ... fish in the Atlantic sector of the Southern Ocean. It is clear from this review that fish are ... important predators of krill, in particular the larger myctophids and some channichthyids and nototheniids ... , and that the importance of krill in fish diets varies substantially both with time and location on ...
Science Journal Paper : CCAMLR Science, Volume 19 (CCAMLR Science, Volume 19) : 115–169 : Auteur(s): Kock, K.-H., E. Barrera-Oro, M. Belchier, M.A. Collins, G. Duhamel, S. Hanchet, L. Pshenichnov, D. Welsford and R. Williams
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Krill distribution in the western Atlantic sector of the Southern Ocean during 1983/84, 1984/85 and 1987/88 based on the results of Soviet mesoscale surveys conducted using an Isaacs-Kidd midwater trawl
Paper Title: Krill distribution in the western Atlantic sector of the Southern Ocean during 1983 ... -Kidd midwater trawl Abstract / Description: In this paper we consider the results of three mesoscale ... summer-autumn periods of 1983/84 and 1987/88 and in the spring-summer of 1984/85 using a grid of stations ... general pattern of krill distribution and drift in the western part of the Atlantic sector of the ... IN THE WESTERN ATLANTIC SECTOR OF THE SOUTHERN OCEAN DURING 1983184,1984185 AND 1987188 BASED ON THE ... Str. Kaliningrad 236000, Russia Abstract In this paper we consider the results of three ... the summer-autumn periods of 1983/84 and 1987/88 and in the spring-summer of 1984/85 using a grid of ... the general pattern of krill distribution and drift in the western part of the Atlantic sector of the ...
Science Journal Paper : CCAMLR Science, Volume 6 (CCAMLR Science, Volume 6) : 59–70 : Auteur(s): Sushin, V.A. and K.E. Shulgovsky
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Notes on the use of virtual population analysis for stock assessment of the mackerel icefish, Champsocephalus gunnari (Lönnberg, 1906) in Subarea 48.3 for the 1990/91 and 1991/92 seasons
Assessment (WG-FSA) to satisfactorily assess in 1991 the status of the Champsocephalus gunnari population in ... -class (1 year olds in 1988), was quite robust, despite the use of various combinations of survey and ... CPUE indices for tuning. According to the VPA the population in 1991/92 was composed of a large ... proportion of 5 year olds, which was not observed during the survey on Falklands Protector in January 1992 ... Age) Fs These are calculated in the MAFF VPA as a fixed proportion of the mean of Fs from a ... VPA runs presented here were calculated as the mean of ages 2 to 4. The bottom row Fs in the ADAPT ... highly dependent on the estimated recruitment of 1 year olds in 1991/92. The mean recruitment from the ... ANALYSIS FOR STOCK AS.~ESSMENT OF THE MACKEREL ICEFISH, CHAMPSOCEPHALUS GUNNARI (LONNBERG, 19(6) IN ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/9 (Selected Scientific Papers, SC-CAMLR-SSP/9) : 49–79 : Auteur(s): Parkes, G.
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Catch per unit effort (CPUE) data from the early years of commercail krill fishing operations in the Atlantic sector of the Antarctic
operations in the Atlantic sector of the Antarctic Abstract / Description: Catch per unit effort (CPUE) data ... 1980/81, whereas the lowest CPUE occurred in Subarea 48.3 in 1977/78. The validity of the CPUE index is ... representativeness of krill smaller than 35 mm in the catches. File: 03siegel-etal.pdf ... Paper Title: Catch per unit effort (CPUE) data from the early years of commercail krill fishing ... EFFORT (CPUE) DATA FROM THE EARLY YEARS OF COMMERCIAL KRILL FISHING OPERATIONS IN THE ATLANTIC SECTOR ... under- or overestimate the amount of krill available in a statistical subarea. Overall length-frequency ... several factors influence the representativeness of krill smaller than 35 mm in the catches. Resume ... fishery, because the latter index is standardised by square metre of the net opening in addition to ...
Science Journal Paper : CCAMLR Science, Volume 5 (CCAMLR Science, Volume 5) : 31–50 : Auteur(s): Siegel, V., V. Sushin and U. Damm
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A preliminary assessment of the stock of the ommastrephid squid Martialia hyadesi in the Scotia Sea based on data from predators
Paper Title: A preliminary assessment of the stock of the ommastrephid squid Martialia hyadesi in ... Martialia hyadesi; will be attempted in the future. This squid is an important component of the diet of ... several species of albatross and the southern elephant seal and is probably taken in significant ... predators in the Scotia Sea is 326 098 to 330 642 tonnes, 94% of which is taken by southern elephant seals ... OF THE OMMASTREPHID SQUID MARTIALIA BY ADESI IN THE SCOTIA SEA BASED ON DATA FROM PREDATORS· P.G ... exploitation of the sub-Antarctic ommastrephid species Martialia hyadesi will be attempted in the future. This ... Ocean stock of M. hyadesi and its significant role in the diet of some vertebrate predators, the ... SC-CAMLR-IX/BG/13 A PRELIMINARY ASSESSMENT OF THE STOCK ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 479–480 : Auteur(s): Rodhouse, P.G.
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Is current management of the Antarctic krill fishery in the Atlantic sector of the Southern Ocean precautionary?
format to explain the management of the Antarctic krill (Euphausia superba) fishery in the subareas 48.1 ... new, precautionary assessment of exploitation rate in this fishery. The effective regional catch limit ... (or “trigger level”), established in 1991, is 0.62 million tonnes year-1, equivalent to ~1% of the ... evidence for a decline in the abundance of krill in the 1980s, but no evidence of further decline over more ...
Meeting Document : WG-EMM-16/21 : Auteur(s): S. Hill, A. Atkinson, C. Darby, S. Fielding, B. Krafft, O.R. Godø, G. Skaret, P. Trathan and J. Watkins
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STRUCTURE OF THE WATER MASSES AND KRILL DISTRIBUTION IN THE CENTRAL AND EASTERN PARTS OF THE ATLANTIC ANTARCTIC AREA
Abstract: The data of 18 expeditions fulfilled by AtlantNIRO during 1970-2000 in the central and ... with reference to the structure and dynamics of the water masses in the area of the Southern Sandwich ... coastal zone of the Antarctic. It was demonstrated that in these areas in the frontal zone of the Weddell ... circulation and in the area of the Antarctic nearshore current the oceanographic conditions appeared favorable ...
Meeting Document : WG-EMM-11/24 : Auteur(s): V.N. Shnar and S.M. Kasatkina (Russia)
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Notes on the use of virtual population analysis for stock assessment of the mackerel icefish, Champsocephalus gunnari (Lönnberg, 1906) in Subarea 48.3 for the 1990/91 and 1991/92 seasons
, dominated in recent years by the 1987 year class (1 year olds in 1988), was quite robust, despite the use of ... various combinations of survey and cpue indices for tuning. According to the VPA the population in 1991/92 ... Falklands Protector in January 1992. Breakdown in the credibility of the VPA results in most recent years is ... attributed to the invalid assumption of constant M and contradictions in the input data. A conservative ...
Meeting Document : WG-FSA-92/27 : Auteur(s): G. Parkes (United Kingdom)
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Characteristics of oceanic structure in the waters around the South Shetland Islands of the Antarctic ocean between December 1990 and February 1991: outstanding coastal upwelling?
Abstract: The sixth Antarctic survey cruise of R/V Kaiyo Maru was carried out in waters around ... into operation In the same area after an interval of 40 days. The more characteristic change was ... clearly recognized in the waters of the insular shelf from the first leg to the second leg. The Antarctic ... (Japan) Title: Characteristics of oceanic structure in the waters around the South Shetland Islands of ...
Meeting Document : WG-KRILL-92/24 : Auteur(s): M. Naganobu, T. Katayama, T. Ichii, H. Ishii and K. Nasu (Japan)