Search results
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Preliminary trials to test mitigation measures aimed at reducing Macrourus spp. by-catch on autoliners targeting D. eleginoides with longlines in the CCAMLR Convention Area
by the vessel (14/0 EZ J-type hooks and squid bait respectively). Catch per unit effort (CPUE) of Macrourus spp ... in catch rates of Macrourus spp due to bait was significant, but not for hook-type. Bait type had similar ... effects on the catch rates of Dissostchus spp. and of all other by-catch species combined. However ... also significant and when bycatch to catch ratios were analysed, the variation due to bait ...
Meeting Document : WG-FSA-07/33 : Author(s): R.E. Mitchell, D.J. Agnew, T. Carruthers, J. Clark, L. Ross (United Kingdom) and J. van Heerden (South Africa)
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Implementation of by-catch move-on rules in exploratory fisheries
Abstract: The implementation of by-catch move-on rules is presented based on the analysis ... of catch and location data from CCAMLR exploratory fisheries from 2010 to 2018. Conservation Measure 33-03 ... specified a haul-specific move-on rule for any by-catch taxa and a cumulative catch move-on rule ... Title: Implementation of by-catch move-on rules in exploratory fisheries Microsoft Word File: fsa-18 ...
Meeting Document : WG-FSA-18/09 : Author(s): CCAMLR Secretariat
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Estimation of catch rate and mean weight in the exploratory Dissostichus fisheries across Divisions 58.4.1 and 58.4.2 using generalised additive models
for these fisheries. Analyses of C2 catch rate and mean weight data from 2484 longline hauls conducted between 2003 ... predictions of catch rate and mean weight across fishable depths in both Divisions. Catch rates across ... locations within fishable depths predicted to have catch rate of less than 100 kg per 1000 hooks. The region ... around Prydz Bay is predicted have the highest catch rate of D. mawsoni and is also shown ...
Meeting Document : WG-FSA-11/35 : Author(s): D.C. Welsford (Australia)
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Some notes on by-catch of fishes and salps caught by the fishery vessel Niitaka Maru in the vicinity of the South Shetland Islands (January to February 1999)
and Chaenodraco wilsoni were found in 4 trawl catches. On the contrary, salps were captured as by-catch in 69 ... hauls and those estimated value was 20 to 3560 ind./t of krill. By-catch fishes fed on Thysanoessa ... macrura and Euphausia superba was not found in their stomachs. Abundance of salps in krill catches could ... have been depended on the density of krill concentration. At least, the large incidental catch of salps ...
Meeting Document : WG-EMM-00/54 : Author(s): T. Iwami, S. Kawaguchi and M. Naganobu (Japan)
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Spatial pattern of major by-catch fishes at Division 58.4.3a during 2012/13–2016/17
observers have ceased recording number and weight of by-catch fish with some lines. ANT (Antimora rostrata ... ), GRV (Macrourus spp.), RFA (Raja taaf), and SRX (Rajihormes spp.) are common by-catch species ... . These common by-catch species indicate some temporal change of their by-catch pattern. Author(s): Delegations ... of Japan and France Title: Spatial pattern of major by-catch fishes at Division 58.4.3a during 2012/13 ...
Meeting Document : WG-FSA-18/69 : Author(s): Delegations of Japan and France
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Catch Uncertainty in Krill Fisheries
Abstract: Catch uncertainty is a component of uncertainty that is not routinely considered ... reported catch of 600 000t could actually represent a catch in ‘green weight’ of 2.5 million tonnes ... . Quantifying the level of uncertainty in reported catches of krill would require information on product ... ) as well as the product composition of catches. Author(s): Secretariat Title: Catch Uncertainty in Krill ...
Meeting Document : WG-EMM-08/46 : Author(s): Secretariat
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A meta-analysis of by-catch in the Ross Sea toothfish fishery
an analysis of by-catch in CCAMLR longline fisheries. The numerical target catch ratio (the number of target ... toothfish fishery from 2008–2014, was used as a single metric to examine the amount of by-catch reported ... reported by observers. However, the way in which observer sampling of by-catch is reported requires ... clarification. In order to further develop the analysis of by-catch it is essential to consider what additional ...
Meeting Document : WG-SAM-15/23 : Author(s): CCAMLR Secretariat
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By-catch in the Australian fisheries in Division 58.5.2
than 1% of the total catch (target plus bycatch). Higher percentage bycatch rates occurred in trawling ... grounds where the fishing effort and therefore target catch was low. Bycatch in the longline fisheries ... was higher, ranging from 6% to 13% of the total catch when only landed bycatch was considered and ranging ... in the C. gunnari fishery. The total skate catch in Division 58.5.2 (including those cut from longlines) was 126.6 ...
Meeting Document : WG-FSA-05/68 : Author(s): E.M. van Wijk (Australia)
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REPORT ON THE PRACTICALITIES OF THE EXISTING CCAMLR 5% BY-CATCH RULE AND THE 10% SMALL CHAMPSOCEPHALUS GUNNARI RULE IN STATISTICAL DIVISION 58.5.2 AND SUGGESTIONS FOR POSSIBLE IMPROVEMENTS
Abstract: This paper describes difficulties encountered in the application of the 5% by-catch ... conducted by Australian vessels. It was found that the by-catch rules were frequently triggered by negigible ... catches of listed by-catch species. Suggestions are given for amendments to the rules to improve ... OF THE EXISTING CCAMLR 5% BY-CATCH RULE AND THE 10% SMALL CHAMPSOCEPHALUS GUNNARI RULE IN STATISTICAL DIVISION ...
Meeting Document : CCAMLR-XVI/12 : Author(s): Delegation of Australia
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Meta-analysis of catch reporting in CCAMLR exploratory fisheries
Abstract: The Secretariat has prepared a meta-analysis of the target and by-catch reported ... to target species divided by the total number of fish caught (the target catch ratio) is used as simple ... metric of the relative level of target and by-catch reported for each haul. This index showed little ... reported in CCAMLR fisheries may include the development of a detailed manual on by-catch sampling as well ...
Meeting Document : WG-FSA-18/14 : Author(s): CCAMLR Secretariat