Search results
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Information on levels of seabird by-catch in fisheries adjacent to the CAMLR Convention Area
Abstract: The purpose of this paper is to respond to a request made at the XXXII CCAMLR meeting ... in 2013 for ACAP to provide information on the levels of seabird bycatch in fisheries adjacent to the ... CCAMLR Convention area. A summary of the most recent bycatch and related information held by ACAP is ... presented, and the current status of the process to develop a bycatch data reporting and assessment ...
Meeting Document : CCAMLR-XXXIII/BG/15 Rev. 1 : Author(s): Submitted by ACAP
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Interannual variation in the summer diet of Adélie penguin (Pygoscelis adeliae) at Edmonson Point
Abstract: Diet sampling of Adélie penguins (Pygoscelis adeliae) was carried out at two colonies ... , in the Ross Sea, Antarctica, to study the feeding ecology of this species for the Commission for the ... Conservation of Antarctic Marine Living Resources (CCAMLR) Ecosystem Monitoring Program. The study took place ... composition of diet varied between locations: mean weight of food and krill content were generally higher at ...
Meeting Document : WG-EMM-04/38 : Author(s): S. Olmastroni, F. Pezzo, I. Bisogno and S. Focardi (Italy)
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Age, growth and size at sexual maturity of Macrourus carinatus from the CCAMLR fisheries in division 58.5.2
Abstract: Estimates of age and growth were determined from 156 Macrourus carinatus otolith ... 1993. The estimated range of ages was 4 – 25 years. von Bertalanffy growth parameters were calculated ... for both sexes combined, resulting in values of: L8 = 635 mm, K = 0.088 and t0 =-1.8. The size at ... sexual maturity of M. carinatus was determined from 162 specimens collected during commercial fishing ...
Meeting Document : WG-FSA-02/48 : Author(s): E.M. van Wijk, R. Williams and A.J. Constable (Australia)
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Distribution of salps near the South Shetland Islands during austral summer, 1990/1991 with special reference to krill distribution
Abstract: Distribution and biomass of salps and Antarctic krill (Euphausia superba) were ... was lower than that of E. superba. Two species of salps; Salpa thompsoni and Ihlea racovitzai were ... found, and the former was dominant numerically. Spatial distribution and generation composition of these ... two species was different. Spatial distributions of salps and E. superba did not overlap particularly ...
Meeting Document : WG-EMM-95/54 : Author(s): Terazaki, M., Ichii, T., Kawaguchi, K., Nishikawa, J., Ishii, H., Naganobu, M.
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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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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)