Search results
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Report on a tuna long-lining fishing voyage aboard Southern Venture to observe seabird by-catch problems
as it was deployed, were observed during 8-days' fishing of a New Zealand-owned tuna long-liner. From 11,200 ... in a bird being hooked. The mollymawk was hooked at night near full moon, but under thick cloud. Most bait ... -takes occurred in daylight, particularly before dusk. The vessel's bird-scaring line seemed ... in a bird being hooked. The mollymawk was hooked at night near full moon, but under thick cloud. Most bait ...
Meeting Document : WG-IMALF-94/10 : Author(s): M.J. Imber (New Zealand)
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New Zealand’s exploratory fishery for toothfish within the SPRFMO Convention Area: update and future directions
surveys provide information on the life history of Antarctic toothfish that is consistent with the current ... will be shared with CCAMLR and had been used in the stock assessment of Antarctic toothfish in the Ross ... CCAMLR convention area. The key findings are that only Antarctic toothfish, Dissostichus mawsoni, were ... caught, that these were mostly male (~85%), and that most fish were in spawning condition or spent. These ...
Meeting Document : SC-CAMLR-XXXVI/BG/18 : Author(s): M. Cryer, A. Dunn and J. Fenaughty
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Distribution and possible areas of spatial mixing of two stocks of humpback whales, a krill predator, in the Indo-Pacific region of the Antarctic revealed by genetic analyses
Abstract: The main purpose of this study was to investigate the distribution and areas of mixing ... on distribution and areas of mixing in the Antarctic feeding grounds is essential to assist the interpretation ... : i) Western Australian whales distribute mainly in Areas IV, and probably mix with a different stock in Area ... numbers; iii) Eastern Australian whales distribute mainly in Area VW, and probably mix with a different ...
Meeting Document : WG-EMM-2019/67 : Author(s): L.A. Pastene, M. Goto, M. Taguchi and K. Matsuoka
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A study of Patagonian toothfish (Dissostichus eleginoides) post tagging survivorship in Subarea 48.3
survivorship. There are indications that survivorship rates may be lower while observers are learning how to ... , and then were kept in tanks with varying degrees of seawater replacement for at least 12 hours after ... tagging. On one vessel fish with a variety of injuries were selected to see if this affected recovery. 395 ... animals were included in the final analysis, with an overall survivorship of 89%. There were significant ...
Meeting Document : WG-FSA-05/19 : Author(s): D. J. Agnew, J. Moir Clark, P.A. McCarthy, M. Unwin, M. Ward, L. Jones (United Kingdom), G. Breedt, S. Du Plessis, J. Van Heerdon (South Africa) and G. Moreno (Spain)
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Orientation of Antarctic krill in an aquarium
Abstract: Acoustic methods appear to be the best way to estimate Antarctic krill abundance ... strength (TS) values, since TS varies with body orientation. Krill body orientation was measured in an ... slightly less than that when animals were hovering, 49.7° (SD=7.5°, N=50). Such an acute angle of elevation ... . Although mature females with marked swelling of the cephalothorax were not included in the experiment, the ...
Meeting Document : WG-KRILL-93/24 : Author(s): Y. Endo (Japan)
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Analyses of acoustic line-transect data from the waters around South Georgia: estimation of krill (Euphausia superba Dana) biomass
various definitions of strata. The total biomass in the area of 155 786 km2 was estimated to be 1.8225 x ... 106 t (Coefficient of Variation = 9.5%). This gives an estimate of mean density throughout the region ... of 11.7 t km-2. Although the estimate of the mean is not sensitive to the definition of strata, the ...
Meeting Document : WG-KRILL-91/30 : Author(s): E. Murphy, I. Everson and A. Murray (United Kingdom)
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The Secretariat review of the Strategic Plan, associated activities and outcomes
Abstract: At CCAMLR-XXIX, the Commission recommended that a staffing and salary strategy be ... -EMM with a brief description of the process that has been supported since CCAMLR-XXIX to address these ... included in the review of the Secretariat’s Strategic Plan and that SCAF consider the outcomes of that ... Scientific Committee (SC-CAMLR-XXIX, paragraph 14.2) that a review of the Secretariat’s data management ...
Meeting Document : WG-EMM-11/09 : Author(s): Secretariat
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Spatial distribution and population structure of juvenile Antarctic toothfish (Dissostichus mawsoni) in the South Shetland Islands (Subarea 48.1)
Islands (CCAMLR Subarea 48.1). Fish samples were collected during five summer cruises conducted from 2001 ... (CCAMLR Subarea 48.1). Fish samples were collected during five summer cruises conducted from 2001 to 2007 ...
Meeting Document : WG-FSA-18/45 : Author(s): M. La Mesa, E. Riginella and C.D. Jones
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Investigation of potential biases in the assessment of Antarctic toothfish in the Ross Sea fishery using outputs from a spatially explicit operating model
. Conceptually this assumption implies either that tagged and untagged fish mix equally in the population ... fishing effort, and the limited mixing of fish between areas — more than half of tags have been released ... this assumption implies either that tagged and untagged fish mix equally in the population, or that fishing effort ... the underlying distributions of tag-releases and subsequent fishing effort, and the limited mixing of fish ...
Meeting Document : WG-SAM-13/36 : Author(s): S. Mormede and A. Dunn (New Zealand)
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ANALYSIS OF ROSS SEA TAGGING AND RECAPTURE RATES
the same. 3. This method could be used to identify groups of nations that have similar reporting rates ... , recapture year, SSRU, release nation and recapture nation, with 193 recaptures. Despite this size, fishing ... has not been consistent enough between nations to allow the analysis to be definitive. In many cases ... existed, recapture rates were usually highest with New Zealand tagged and recaptured fish, although there ...
Meeting Document : WG-SAM-08/07 : Author(s): D.J. Agnew (UK)