Search results
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Toothfish, Dissostichus eleginoides, at South Georgia
that the exploited fish are senescent and not contributing to the breeding population (CCAMLR-VIII, paragraph 106 ... ). Histological examination of the gonads of a small sample of fish taken from a commercial longliner in January ... 1990 indicates that the fish are sexually mature and, at the time of sampling, are approaching spawning ... been claimed that the exploited fish are senescent and not contributing to the breeding population ... Georgia has expanded greatly in recent years. It has been claimed that the exploited fish are senescent ... of a small sample of fish taken from a commerciallongliner in January 1990 indicates that the fish ... for setting a TAC. The USSR opposed this view and stated that the longline fishery takes senescent fish ... of the estimated production and which is removing senescent fish and have therefore sought to investigate ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 255–261 : Author(s): Everson, I. and S. Campbell
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Oceanological factors affecting formation of mackerel icefish aggregations in the South Georgia area during different seasons of the year
the water temperature is a limiting factor restricting fish distribution. In spring-summer icefish ... Rocks. High level of energy exchange, intensive supply of food allow fish to distribute in the wider ... that low water temperatures restrict fish distribution into the water waters. Autumn includes the feeding ... and pre-spawning periods. Pre-spawning fish do not depend on the forage species distribution and migrate ...
Meeting Document : WG-FSA-05/76 : Author(s): Zh.A. Frolkina (Russia)
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Models of tag shedding for double tagging as a function of time at liberty and approximate solutions for the single tagging model in CASAL
software applies this model correctly for fish released with a single tag but does not have the facility ... at present to correctly apply the KW model for fish released with two tags. The solution of Dunn et al. (2005 ... the correct proportion of fish that have retained at least one tag, and are therefore detectable ... of recaptures of fish released in the Heard and MacDonald Island (HIMI) (Division 58.5.2) Patagonian toothfish ...
Meeting Document : WG-SAM-11/12 : Author(s): S.G. Candy (Australia)
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WS-FAD-86
Full Name: Workshop on Fish Age Determination Location: Moscow, USSR Date(s): Monday, 14 July ... Antarctic fish R. Coggan and M. White (United Kingdom) CCAMLR/86/FA/04 Fish ageing a method for decalcifying ... and sectioning fish otoliths L. Barber (Canada), M. White and R. Coggan (United Kingdom) CCAMLR/86/FA/05 Age ... of Antarctic fish: Validation of the timing of annuli formation in otoliths and scales A.W. North (United ...
Meeting
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Food and feeding of two Channichthyids, Champsocephalus gunnari and Chaenocephalus aceratus, around Elephant Island and in the South Shetland Islands (Subarea 48.1) in 2001 and 2002
on krill and other crustaceans as well as on fish. C. aceratus smaller than 30 – 35 cm relied primarily ... on krill and other crustaceans while larger fish preyed predominantly on fish. They fed mainly on locally ... abundant fish species which were G. gibberifrons in 2001 and L. larseni and C. gunnari in 2002. Author ... and other crustaceans as well as on fish. C. aceratus smaller than 30 – 35 cm relied primarily on krill ...
Meeting Document : WG-FSA-02/73 Rev. 1 : Author(s): H. Flores, K.-H. Kock, S. Wilhelms (Germany) and C.D. Jones (USA)
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Examination of the gut contents of Patagonian toothfish (Dissostichus eleginoides) from the toothfish pot fishery trials around South Georgia
stomachs was greatly reduced in fish caught using pots rather than longlines, increasing sample sizes ... . This was hypothesised to result from fish caught in pots suffering reduced levels of trauma. The most common prey item ... for fish caught using pots was prawns. This prey category was localised in location and depth. However ... prawns were not common in the stomachs of fish caught from this location using longlines. The next most ...
Meeting Document : WG-FSA-00/25 : Author(s): G. Pilling, T. Daw, M. Purves, D. Agnew and J. Xavier (United Kingdom)
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Results from the groundfish survey conducted in CCAMLR Subarea 48.3 in January/February 2011
the shelf. Catch-weighted length frequencies of mackerel icefish indicated that 3+ sized fish dominated ... at Shag Rocks, however 1+ and 2+ sized fish were present in larger proportions at South Georgia. A mean ... greater than in 2009 and 2010, with a large haul of 40-45cm fish (1.6t) around Shag Rocks. These fish ... are likely to be the same cohort that was evident at Shag Rocks in 2010 (fish were then 29-39cm age ...
Meeting Document : WG-FSA-11/29 : Author(s): J. Brown, S. Gregory, K. Brigden, R. Benedet, O. Hogg, P. Brewin and L. Featherstone (United Kingdom)
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Fishery Report 2015: Dissostichus spp. (Subarea 48.2)
to this report is shaded. Throughout this report the CCAMLR fishing season is represented by the year in which ... that season ended, e.g. 2015 represents the 2014/15 CCAMLR fishing season (from 1 December 2014 to 30 ... Report 2015: Dissostichus spp. Subarea 48.2 Introduction 1. Research fishing for Dissostichus spp ... and adjacent waters. 9. In 2015, Chile proposed to undertake research fishing in Subarea 48.2. The aim ...
Document : Site Section: Publications
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A simple approach for calculating the potential yield of krill from biomass survey results
months of zero growth. Much of the fishing of krill off Antarctica is concentrated in the three summer ... that the three-month growth and fishing seasons coincide exactly, even though results in Rosenberg et al. (op ... a constant fishing mortality strategy, but this seems inappropriate for krill. The reason ... is that, in practice, such a strategy could only be implemented in the form of fixed fishing effort, but for krill any ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/8 (Selected Scientific Papers, SC-CAMLR-SSP/8) : 207–217 : Author(s): Butterworth, D.S., A.E. Punt and M. Basson
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Educational poster on hook ingestion
of hooks discarded in fish heads which ingestion by seabirds, especially wandering albatrosses which ... are large enough to swallow fish heads whole (SC-CAMLRR-XXI/BG/7). For example, in 2001/02 the scientific ... observer on the F/V Argos Helena estimated that >15,000 fish heads were discarded with hooks still ... albatrosses. The injuries appear to have two sources – injuries from the ingestion of discarded fish heads ...
Meeting Document : WG-FSA-07/20 : Author(s): G. Robertson (Australia)