Search results
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Revised research program of Ukraine in Subarea 88.3
Abstract: The research of Dissostichus in Subarea 88.3 carried out by Chile in 1998, New Zealand ... in 2005, Russia in 2011 and 2012 and the Republic of Korea in 2016. It was noted that no tagged ... January to April, as ice conditions permit. It is planned that the number of longline sets will be 60 in ... four reserch blocks. It is planned to complete the study for Dissostichus spp. in Subarea 88.3 within 3 ...
Meeting Document : WG-FSA-17/34 : Author(s): Delegation of Ukraine
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A multi-frequency method for improved accuracy and precision of in situ target strength measurements
provided information about the identity of constituents in a mixed species assembly. Author(s): Hewitt ... Abstract: The effectiveness of a split-beam echosounder system to delineate single scatterers and ... synchronized signals from two or more adjacent split-beam transducers of different frequencies. The accuracy of ... from one of the split-beam transducers, additional corresponding TS measurements can be collected with ...
Meeting Document : WG-EMM-97/24 : Author(s): Hewitt, R.P., Soule, M.A., Demer, D.A.
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Comparison of Champsocephalus gunnari catches in Subarea 48.3 from1994–97 and 2013 cruises
Abstract: The local densities of Champsocephalus gunnari observed in the 2013 survey are ... in the early 1990’s was due to recruitment collapse, probably a consequence of overfishing. Author(s ... sampled was found. The comparison of the length distribution functions suggests that the stock depletion ... ): E. Marschoff and P. Martínez (Argentina) Title: Comparison of Champsocephalus gunnari catches in ...
Meeting Document : WG-FSA-13/65 : Author(s): E. Marschoff and P. Martínez (Argentina)
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Preliminary examination of otolith microchemistry to determine stock structure in Antarctic toothfish (Dissostichus mawsoni) between SSRU 88.1C and 88.2H
concentrations in the otolith edge and then to (ii) assess the potential of natal signatures to distinguish ... shown. This resulted in the correct classification of 63% of fish overall to their original capture ... stocks among these regions. For the elements (Mg, Al and Sr) spatial variation in otolith chemistry was ... success (79%), compared to the otolith edge which suggested the majority of fish from SSRU 88.1C and 88.2H ...
Meeting Document : WG-SAM-14/33 : Author(s): R. Tana, B.J. Hicks, C. Pilditch and S.M. Hanchet (New Zealand)
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Population assessment of Antarctic toothfish in Subarea 48.4 using tag-recapture method
Abstract: The stock of Antarctic toothfish in the CCAMLR subarea 48.4 was estimated using as the ... Petersen method as 640 tonnes. Application of the harvest rate used for D. eleginoides in Subarea 48.3 (γ ... = 0.038) gives yields of 24 t for the Antarctic toothfish in the region vs. previous estimation of 30 ... tonnes. Author(s): V. Laptikhovsky (United Kingdom) Title: Population assessment of Antarctic toothfish ...
Meeting Document : WG-FSA-13/64 : Author(s): V. Laptikhovsky (United Kingdom)
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Diet composition of Dissostichus eleginoides in Subarea 48.3, Dr Eduardo Holmberg survey March/April 1996
Abstract: A diet analysis of the patagonian toothfish Diissostichus eleginoides in the Subarea ... 48.3 in March/April 1996 was carried out by frequency of occurrence (F%) and coefficient "Q" ... ; (%) methods. The samples consisted chiefly of immature specimens, with predominant length ranges of 30-70 cm ... , although its importance was overestimated by the frequency of occurrence method. Cephalopods and mysids ...
Meeting Document : WG-FSA-96/29 : Author(s): Barrera-Oro, E., Marschoff, E., Casaux, R.
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Blue-eyed shags as indicators of changes in ittora fish populations
species identified by the examinations of otoliths present in regurgitated cast and those regularly ... Abstract: The use of Shag’s pellets as an appropriate technique to monitor the abundance of ... littoral fish populations is presented for consideration of the CCAMLR Ecosystem Monitoring Program Working ... Group. The effectiveness of the method is based on the very good agreement found between the fish ...
Meeting Document : WG-CEMP-93/25 Rev. 1 : Author(s): R. Casaux and E. Barrera-Oro (Argentina)
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Entanglement of Antarctic fur seals Arctocephalus gazella in man-made debris at Signy Island, South Orkney Islands, 2002/03
study undertaken at Bird Island, South Georgia in 2002/03. In the case of Bird Island, data indicated ... Abstract: The results of the seventh annual survey of entanglement of Antarctic fur seals at ... that the number of entangled fur seals had decreased by 67% compared to the previous year, this being ... presence of the entangled seal at Signy, together with the considerable number of seals with neck collars ...
Meeting Document : SC-CAMLR-XXII/BG/13 : Author(s): Delegation of the United Kingdom
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An assessment of toothfish in Subarea 48.3 using CASAL
Abstract: The CASAL software has been successfully applied to an assessment of the stock of ... single fleet, as it is possible that overall trends in the CPUE series were not fully taken into account ... in the two fleet assessment. This alternative assessment produced worse fits to the catch length ... 45,893 t, and the spawning stock biomass was estimated to be 120,360 t, around 67% of its unexploited ...
Meeting Document : WG-FSA-05/16 : Author(s): R.M. Hillary, G.P. Kirkwood and D.J. Agnew (United Kingdom)
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Towards a validation of ageing in mackerel icefish (Champsocephalus gunnari) – can we estimate age more accurately?
briefly summarizes the state of knowledge on age determination in mackerel icefish and assesses the ... ototlith exchange programme in the late 1980’s revealed considerable differences between readers when fish ... older than 3 or 4 years were aged. These differences could not be reconciled at the end of the exchange ... . A second age determination workshop on mackerel icefish to improve the accuracy of age determination ...
Meeting Document : WG-FSA-05/23 : Author(s): K.-H. Kock (Germany) and Zh.A. Frolkina (Russia)