Search results
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2007 assessment of the toothfish (Dissostichus eleginoides) resource in the Prince Edward Islands vicinity
is updated to take account of further catch, GLM standardised CPUE and catch-at-length information that has ... in terms of spawning biomass. It is suggested that it would be prudent to restrict annual legal catches ... to 500 tonnes or less, unless a large proportion of the catch is to be taken by pots (which avoid ... is updated to take account of further catch, GLM standardised CPUE and catch-at-length information that has ...
Meeting Document : WG-FSA-07/34 Rev. 1 : Author(s): A. Brandão and D.S. Butterworth (South Africa)
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Commercial krill fisheries in the Antarctic 1973–1988
Living Resources (CCAMLR) are used to discern visible trends in catch and effort for the Antarctic krill ... (Euphausia superba) fishery between 1972/73 and 1987/88. With time the annual krill catch rose gradually ... 000t thereafter. Indications are that in terms of both catch and effort the Soviet and Japanese ... acutorostrata) catches are discussed. Author(s): Delegation of South Africa Title: Commercial krill fisheries ...
Meeting Document : SC-CAMLR-VIII/BG/11 : Author(s): Delegation of South Africa
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The annual random stratified trawl survey to estimate the abundance of Dissostichus eleginoides and Champsocephalus gunnari in the Heard Island region (Division 58.5.2) for 2012
, Plateau Southeast and Plateau West, and in a repeat of the hauls in Ground B. Catches in this RSTS were ... generally high in comparison with previous years, with the total fish catch being twice as high as the long ... term average (2006-2011). The catches of Dissostichus eleginoides for 2012 were twice those of 2011 ... and about one and a half times higher than the long-term average. Champsocephalus gunnari catches were twice ...
Meeting Document : WG-FSA-12/25 : Author(s): G.B. Nowara and T. Lamb (Australia)
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Results from the New Zealand exploratory fishery for Dissostichus spp. in Divisions 58.4.1 and 58.4.2 in the 2004/05 season
season in this fishery are presented. Janas undertook 44 sets in Division 58.4.2 for a catch of 37.9 ... C for a catch of 0.372 tonnes of D. mawsoni. San Aspiring undertook 20 research sets in Division 58.4.1 SSRU ... G for a catch of 20.9 tonnes of D. mawsoni and 0.4 tonnes of D. eleginoides. The first sign of the onset ... in this fishery are presented. Janas undertook 44 sets in Division 58.4.2 for a catch of 37.9 tonnes of D. mawsoni ...
Meeting Document : WG-FSA-05/62 : Author(s): G.J. Patchell (New Zealand)
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Choice of a procedure for deciding closure of CCAMLR fisheries: a simulation model
of the variation in catch rates shown by the fisheries. Non-fluctuating random and fluctuating random catch ... determines the trend of catch rates using linear regression over the latest four reporting periods ... , as described in Conservation Measures, have been difficult to implement because of the variation in catch rates ... shown by the fisheries. Non-fluctuating random and fluctuating random catch histories are simulated ...
Meeting Document : CCAMLR-X/BG/09 : Author(s): Secretariat
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Estimates of abundance of Dissostichus eleginoides and Champsocephalus gunnari from the random stratified trawl survey in the waters surrounding Heard Island in Division 58.5.2 for 2018
, but with a new set of randomly selected station points. The catch of Dissostichus eleginoides (Patagonian ... toothfish) was twice that of 2017 while the catch of Champsocephalus gunnari (mackerel icefish) was two ... thirds of the 2017 survey catches. The catches of the other managed bycatch species, Channichthys ... combined) were also two to three times greater than those of last year. Catches of skates were similar ...
Meeting Document : WG-FSA-18/55 : Author(s): G. Nowara, T. Lamb and P. Ziegler
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The annual random stratified trawl survey in the waters of Heard Island (Division 58.5.2) to estimate the abundance of Dissostichus eleginoides and Champsocephalus gunnari for 2015
, including the net used were identical to previous surveys. The catch rate of D. eleginoides was twice ... that of 2014 and two and a half times that of the long-term average for the survey. The C. gunnari catch rate ... was at about half the average. For the managed bycatch species catch rates were higher than the average ... for C. rhinoceratus, macrourids and skates, but lower for L. squamifrons. The catch of invertebrates in the 2015 ...
Meeting Document : WG-FSA-15/11 : Author(s): G.B. Nowara, T.D. Lamb and D.C. Welsford (Australia)
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An assessment of longlining operations for Dissostichus eleginoides on board the Chilean-registered longliner BF Cisne Verde during March–May 1997 around South Georgia (Subarea 48.3)
. Previous catch rates were used to set daily sampling effort, and accurately achieved a CCAMLR sampling ... was only 0.8% of the mean daily catch rate; total by-catch by numbers was less than 5%. Consistent CPUE ... by numbers between catches in 1994 and 1997 despite reduction in CPUE by weight indicated that exclusion ... effects may be important in determining the catch taken by longlines. Continuing decreases in size of fish ...
Meeting Document : WG-FSA-97/41 : Author(s): Ashford, J.R., Everson, I.
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An investigation of integrated stock assessment methods for the Patagonian toothfish (Dissostichus eleginoides) in Division 58.5.2 using CASAL
of the abundances of juvenile fish but adding fishery catch-at-length data, including a standardised catch-per-unit ... -effort (CPUE) series. The base-case scenario was then extended to include estimates of IUU catch and mark ... time is substantially increased, the inclusion of the catch-at-length and the mark-recapture data ... of the abundances of juvenile fish but adding fishery catch-at-length data, including a standardised catch-per-unit ...
Meeting Document : WG-FSA-SAM-06/14 : Author(s): A. Constable, S. Candy and I. Ball (Australia)
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Preliminary model of krill fishery behaviour in Subarea 48.1
fishery in Subarea 48.1 and estimates the effort applied and the catch of krill in fine-scale squares ... . The distribution of catches predicted by the model, which is restricted to the months December to March, compare ... favourably with the general distribution of catches in Subarea 48.1. A number of management scenarios ... yearly catch similar to that at present, although the catch is much more concentrated in foraging areas ...
Meeting Document : WG-KRILL-93/14 : Author(s): D.J. Agnew (Secretariat)