Search results
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Towards a validation of ageing in mackerel icefish (Champsocephalus gunnari) – can we estimate age more accurately?
ototlith exchange programme in the late 1980’s revealed considerable differences between readers when fish ... was agreed upon at the last meeting of the ‘Working Group on Fish Stock Assessment’. Our report briefly ... exchange programme in the late 1980’s revealed considerable differences between readers when fish older ... was agreed upon at the last meeting of the ‘Working Group on Fish Stock Assessment’. Our report briefly ...
Meeting Document : WG-FSA-05/23 : Author(s): K.-H. Kock (Germany) and Zh.A. Frolkina (Russia)
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About the fecundity of Patagonian toothfish (Dissostichus eleginoides) in Subarea 48.3 (around South Georgia)
8.19 ± 1,73 thousands of eggs) per 1 kg of fish body weight. Our studies and the analysis of data ... by large eggs can be included in the fish group having a level of absolute fecundity and a low value ... 8.19 ± 1,73 thousands of eggs ) per 1 kg of fish body weight. Our studies and the analysis of data ... by large eggs can be included in the fish group having a level of absolute fecundity and a low value ...
Meeting Document : WG-FSA-98/13 : Author(s): M.M. Nevinsky and A.N. Kozlov (Russia)
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Preliminary results of the E.L. Holmberg 1994 cruise to Subareas 48.3 and 48.2
fish species along different methods, as well as their length frequency distributions. A change ... that the spatial structure of fish populations significantly affects the results of biomass estimates. Author ... 48.3 on a random stratified des n are used to estimate the standing stocks of the main commercial fish ... that the spatial structure of fish populations significantly affects the results of biomass estimates. ...
Meeting Document : WG-FSA-94/29 : Author(s): E.R. Marschoff, B. Prenski, B. Gonzalez, C. Remaggi and C. Balestrini (Argentina)
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A bioenergetics model for estimating prey consumption by an Adélie penguin population in east Antarctica
with low breeding success. On the basis of variable breeding success and the proportion of krill and fish ... in their diet, we estimate that this population consumes 78-406 t of krill and 4-46 t of fish each breeding ... with low breeding success. On the basis of variable breeding success and the proportion of krill and fish ... in their diet, we estimate that this population consumes 78-406 t of krill and 4-46 t of fish each breeding ...
Meeting Document : WG-EMM-16/P10 : Author(s): D. Southwell, L. Emmerson, J. Forcada and C. Southwell
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A by-catch guide for commonly caught species in CCAMLR longline and trawl fisheries
to develop a bycatch guide for commonly caught fish and skate species in CCAMLR longline and trawl fisheries ... detailed descriptive keys for Macrourid (Grenadier) identification, and for juvenile fish caught ... a bycatch guide for commonly caught fish and skate species in CCAMLR longline and trawl fisheries. The guide ... descriptive keys for Macrourid (Grenadier) identification, and for juvenile fish caught in the CCAMLR krill ...
Meeting Document : WG-FSA-16/17 : Author(s): CCAMLR Secretariat
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Comparison of the catches and biological characteristics of Dissostichus mawsoni in Subarea 88.1 in seasons of 2002/03 and 2003/04
been also much smaller in 2003/04 season. The analysis of the length composition fish from the catches ... . Meanwhile, the modal length of fish catches in the 2003/04 season was slightly lower than in the previous ... season. This trend is clearly seen when comparing the length frequencies of fish in different seasons ... been also much smaller in 2003/04 season. The analysis of the length composition fish from the catches ...
Meeting Document : WG-FSA-04/84 Rev. 1 : Author(s): K.V. Shust, N.V. Kokorin and A.F. Petrov (Russia)
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Trends in mean lengths and selectivities for Dissostichus eleginoides taken by longliners in Subarea 48.3
of fish taken on individual longline sets from which length frequencies were sampled by observers ... for fish over 90-100 cm to have a lower relative selectivity than smaller fish. Author(s): G.P. Kirkwood ... South Georgia and Shag Rocks over the period 1995 – 1999. We re-analysed the mean lengths of fish taken ... . Notable differences were found amongst these, but there was a consistent tendency for fish over 90 -100 cm ...
Meeting Document : WG-FSA-01/48 : Author(s): G.P. Kirkwood and D.J. Agnew (United Kingdom)
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Escapement of elephant seal prey in the Heard Island fishery for Dissostichus eleginoides
) to examine the level of escapement of fish preyed on by these seals under the current Total Allowable Catch ... and related to a specific size class of fish. However, it seems that toothfish in the age range of 2-6 years ... of young fish (ages 2-6 years old) under the current catch limit of 3800 tonnes in the trawl fishery ... of escapement of fish preyed on by these seals under the current Total Allowable Catch of 3800 tonnes. Of 21 ...
Meeting Document : WG-EMM-97/42 : Author(s): Slip, D., Constable, A.J., de la Mare, W.K., Williams, R.
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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
generally high in comparison with previous years, with the total fish catch being twice as high as the long ... the long term average. Catches of all the major fish species were higher in 2012 than the long-term average ... of the survey. Lengths and biological measurements were taken for many thousands of fish, 1095 pairs of otoliths ... generally high in comparison with previous years, with the total fish catch being twice as high as the long ...
Meeting Document : WG-FSA-12/25 : Author(s): G.B. Nowara and T. Lamb (Australia)
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Using outputs from spatial population models of Antarctic toothfish in the Ross Sea region to investigate potential biases in the single population model
of spatial distribution and fish mixing used in the standard stock assessments for the Ross Sea region ... an operating model derived from the best-fitting coarse-scale model that restricted fish to areas inside ... the historical footprint of the fishery. However, the results when using a similar model that allowed for fish ... distribution and fish mixing used in the standard stock assessments for the Ross Sea region (and potentially ...
Meeting Document : WG-FSA-12/45 : Author(s): S. Mormede and A. Dunn (New Zealand)