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Analysis of trends in Japanese krill fishery CPUE data, and its possible use as a krill abundance index
krill abundance index Abstract / Description: Haul-by-haul logbook catch and effort data from the ... definitions of effort and catch-per-unit-effort (CPUE), variables were modelled using linear mixed models in ... between ‘catch per searching time’ and ‘catch per day’ within their lower ranges, suggesting these may ... -ku Shizuoka, 424-8633 Japan Abstract Haul-by-haul logbook catch and effort data from the Japanese ... of effort and catch-per-unit-effort (CPUE), variables were modelled using linear mixed models in ... observed between ‘catch per searching time’ and ‘catch per day’ within their lower ranges, suggesting ... could be used to give a catch-per-unit-effort (CPUE) index that is a good predictor of krill abundance ...
Science Journal Paper : CCAMLR Science, Volume 12 (CCAMLR Science, Volume 12) : 1–28 : Autor(es): Kawaguchi, S., S. Candy, S. Nicol, K. Taki and M. Naganobu
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e-cc-xxvii-a5.pdf
... ........................................................................ 183 IV. CATCH DOCUMENTATION SCHEME (CDS) .................................... 186 V. SCHEME OF ... implementing the tagging program in Division 58.4.1 as it had been unable to catch sufficient numbers of ... and finance. Japan also noted that Members’ contributions are already linked to catch levels and ... therefore Members which catch krill are already contributing additional funds to the Commission. Japan
application/pdf attached to:SCIC-08Meeting Report : SCIC-08
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Krill fishery report: 2005 update
preliminary estimate of the total catch of krill for the season is approx 142000 t. This compares with 118166 ... t of krill reported in 2003/04. One monthly catch and effort report is overdue for 2004/05, and some ... ; Time series of catch by season, Contracting Party and small-scale management unit; Species composition ... of by-catch; Occurrence of incidental catches of seabirds and mammals; Development of measures of ...
Meeting Document : WG-EMM-05/5 : Autor(es): Secretariat
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A summary of the commercial fishery for mackerel icefish Champsocephalus gunnari in Subarea 48.3 during the 1997/98 season
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 ... . Most of the catch was made up of fish between 22 and 30 cm long. Fish of this size range have ... previously been shown to be ages two and three. The catch of species other than C. gunnari amounted to only ...
Meeting Document : WG-FSA-98/53 : Autor(es): G. Parkes, A. King and C. Jones (United Kingdom)
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Krill distribution variability and fishery conditions within the local ground of Subarea 48.3 in June 1991
coefficient of catch per a houl of BMRT type vessel amount to V = 0.7, that of a trawl catchability V = 0.197 ... coefficient of possible catch per fishing day (over 24 hours) is only V = 0.13. At considerable variations of ... krill distribution characteristics daily catch of vessels with higly efficient technological equipment ... , such as catch per an hour haul, is more sensitive. Author(s): Kasatkina, S.M. Title: Krill ...
Meeting Document : WG-EMM-95/04 : Autor(es): Kasatkina, S.M.
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Fishes caught along with the Antarctic krill in the vicinity of the South Shetland Islands during the austral summer months of 1994
Abstract: Observations on abundance of by-catch fishes were made during the austral summer months ... in 25 trawl catches (Table 1). Among by-catch fishes, juvenile Lepidonotothen larseni was the most ... of krill concentration (Figs. 1 and 2). The large incidental catch of fishes occurred in hauls with ... the low krill catch rates (Hauls. 36 and 47), and fishes are not found or rare within krill swarms of ...
Meeting Document : WG-Krill-94/25 : Autor(es): T. Iwami (Japan)
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Distribution and abundance of skates (Bathyraja spp.) on the Kerguelen Plateau through the lens of the toothfish fisheries
as incidental by-catch in Patagonian toothfish (Dissostichus eleginoides) longline and trawl ... extending from the islands. Catch rates were modelled using zero-inflated GAMs and GLMs. The catch rates of ... decline in catch rate over the years of the HIMI fishery. Although all skates are returned to the water ... Kerguelen in the time period. This study provides the first review of skate by-catch across both the HIMI ...
Meeting Document : WG-FSA-16/P03 : Autor(es): G.B. Nowara, P. Burch, N. Gasco, D.C. Welsford, T.D. Lamb, C. Chazeau, G. Duhamel, P. Pruvost, S. Wotherspoon and S.G. Candy
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Length-based assessments revisited – why stock status and fishing mortality of long-lived species such as toothfish cannot be inferred from length-frequency data alone
about using unstandardised catch rate data have led to a desire to draw inferences about stock status ... - cautionary catch limits. The intent of the data col- lection is to provide sufficient data from research and ... the precautionary catch limits. For new and exploratory fisheries of Patagonian toothfish ... referenced catch and effort data, catch length-frequency data, tag-recapture data, and otoliths or scales ... , 2010, paragraph 5.7). However, robust advice on catch limits according to CCAMLR decision rules has ...
Science Journal Paper : CCAMLR Science, Volume 18 (CCAMLR Science, Volume 18) : 57–73 : Autor(es): Ziegler, P.E., D.C. Welsford and A.J. Constable
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e-cc-xx-a5.pdf
... France pointed out that the present implementation of the Catch Documentation Scheme for Dissostichus ... exported with a Dissostichus Catch Document (DCD) (SCOI-01/23). This indicated the concern that the CDS ... the form of fish product landed, the statistical area where the catch was harveste d and how the ... catch origins were identified, and that no replies had been received to correspondence from the
application/pdf attached to:SCOI-01Meeting Report : SCOI-01
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Different CPUE types in Soviet krill fishery statistics in 1977–1992
and primary data for their calculations were considered. The main CPUE indices were catch per fishing ... day (CFD), catch per extended fishing day (CEFD) and catch per hour (CH). The primary data for all the ... calculations were catch per haul and haul duration. There is rather high correlation between mean monthly ...
Meeting Document : WG-EMM-03/35 : Autor(es): F.F. Litvinov, A.Z. Sundakov and V. Arkhipov (Russia)