Search results
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Preliminary aspects of a simulation model to be used for evaluating the experimental crab fishery
Abstract: At the 1993 meeting of the Working Group on Fish Stock Assessment, members requested ... that work be undertaken to evaluate certain aspects of the experimental management strategy for the ... rate data from the 1991/92 crab fishery are used to motivate the construction of an ontogenetic ... fishery simulation is spatially explicit, and the dynamics of crab abundance are described on a daily ...
Meeting Document : WG-FSA-94/26 : Author(s): G. Watters (USA)
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Estimating the level of illegal fishing using simulated scaling methods on detected activity
, Annex 5, paragraph 3.18). The results of these simulations suggest that more information on IUU fleet ... the number of IUU fishing days, particularly for areas where patrolling may be relatively infrequent ... vessels between detecting IUU activity, thereby estimating the number of IUU fishing days, and deterring ... such activity. For assessment purposes, this highlights a general problem that the method of ...
Meeting Document : WG-FSA-SAM-04/14 : Author(s): Ball, I.
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Preliminary assessment of genetic diversity in bycatch-caught darkbelly skate (Bathyraja meridionalis) from South Georgia
Abstract: Reliable species identification and population assessments of skates are crucial for ... the sustainable management of their vulnerable stocks. However, species identification is a major ... molecular tools to identify specimens of softnose skates (Bathyraja spp.) caught as bycatch from the ... discrepancy between previous genetic studies of B. meridionalis and B. maccaini that challenged the ...
Meeting Document : WG-FSA-2019/19 : Author(s): S. Pérez-Espona, W.P. Goodall-Copestake, P. Hollyman and M. Belchier
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Behaviour of Dissostichus eleginoides fitted with archival tags at Heard Island: preliminary results
Abstract: Thirty nine Dissostichus eleginoides were released in the vicinity of Heard Island ... data they recorded is analysed here. Most of the fish had periods of active vertical movement ... alternating with periods of relative inactivity, loosely correlated with moon phase. The direction of vertical ... bottom of a valley only moving upwards from their resting depth, while those on the intervening ...
Meeting Document : WG-FSA-02/60 : Author(s): R. Williams and T. Lamb (Australia)
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Diet composition of Antarctic toothfish caught in Divisions 58.4.1 and 58.4.2 in 2014/15 inferred from fatty acid stable isotope analyses
determined. Sampling efforts were made during a longline survey of pre-recruit toothfish from commercial ... muscle tissue of Antarctic toothfish, bycatch specimen and icefish in the stomachs indicated a trophic ... connection between the toothfish and icefish. In this study, similarities in the δ13C values δ15N values of ... Antarctic toothfish indicate they occupy same trophic position irrespective of the area, body size, sex, and ...
Meeting Document : WG-EMM-16/31 : Author(s): Delegation of the Republic of Korea
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Draft: differences in the foraging strategies of male and female Adelie penguins
of breeding Adelie penguins were demonstrated at two widely separated locations over a number of ... frequently and consumed larger quantities of krill, especially when chicks were small. Males tended instead ... on fish throughout chick rearing. The importance of these results to monitoring programs such as the ... CCAMLR Ecosystem Monitoring Program (CEMP), their relevance to the energetics of reproduction and their ...
Meeting Document : WG-EMM-95/46 : Author(s): Franchi, E., Kerry, K., Clarke, J.
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A method for preparing large numbers of otolith sections for viewing by scanning electron microscope
Abstract: In an investigation of the age structure of a population of Notothenia coriiceps ... Richardson at the South Orkney Islands, Antarctica, the microstructure of otoliths was examined. Progress is ... reported on a method used for processing large numbers of otoliths using a scanning electron microscope ... facilitate present methods of ageing fish populations, especially for fishery work in the Antarctic where ...
Meeting Document : WG-FSA-93/07 : Author(s): J.R. Ashford, K. Robinson and M.G. White (United Kingdom)
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Distribution and stock of krill Euphausia superba Dana in December 1983 and January 1984 before and during the Second International Biomass Experiment I/ SIBEX 1/
Abstract: The preliminary results of hydroacoustic investigations conducted aboard the Polish ... vessel "Profesor Siedlecki” /8.XII.1983- 8.I.1984/ are presented. In the first leg of the cruise /8 ... , named the Second International BIOMASS Experiment, covered the area of the Drake Passage and Bransfield ... Experiment /1981/, expecially in the Bransfield Strait. Great concentrations of krill were observed only ...
Meeting Document : SC-CAMLR-III/BG/10 : Author(s): J. Kalinowski (Poland)
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Evaluation of the krill stock in Subarea 48.3, June–August 1995
Abstract: On the ground of trawling of Ukrainian vessels made near the South Georgia from 16 June ... till 15 August 1995 peculiarities of krill distribution, their characteristics including time stability ... (tolerance), are examined, calculations of biomass and krill commercial concentrations values are given ... . Interannual changes in some indices of krill fishing Resources in this subarea from 1985 till 1995 undergo ...
Meeting Document : WG-EMM-96/70 : Author(s): Bibik, V.A.
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Do Adélie penguin fledgling weights provide an index of prey availability?
to two assumed proxies of prey availability: breeding success and foraging trip duration. Concordance ... the end of the breeding season were more strongly correlated with later foraging trips than with ... earlier trips. We interpret these results as an indication of variable resources between the guard and ... crèche stages of the breeding season. In some seasons, there appeared to be constant levels of resources ...
Meeting Document : WG-EMM-05/21 : Author(s): L. Emmerson, C. Southwell and J. Clarke (Australia)