Search results
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Some aspects of the by-catch fish spawning and oogenesis
continental shelf at depth of 300-600 m during summer season (may be autumn for sp. X) of the southern ... Abstract: On the basis of the biological material collected on some by-catch fishes during ... Antarctic toothfish fishery from 2002 till 2008 in different areas of the Southern Ocean (Collaboration Sea ... , D'Urville, Ross and.mundsen Seas) it was established that spawning of C. dewitti and species X ...
Meeting Document : WG-FSA-10/51 : Author(s): V. Prutko (Ukraine) and D. Chmilevsky (Russia)
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Classification of Southern Ocean krill and icefish echoes using Random Forests
echograms and analysis of differences in mean volume backscattering strengths (S V; dB re 1 m-1) measured at ... the random forest. Time-of-day and the difference between S V at 120 kHz (S V 120) and that at 38 kHz ... Abstract: Target identification remains a challenge for acoustic surveys of marine fauna ... . Antarctic krill, Euphausia superba, are typically identified through a combination of expert scrutiny of ...
Meeting Document : WG-EMM-16/23 : Author(s): N. Fallon, S. Fielding and P. Fernandes
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Evaluation of the effects of illegal, unregulated and unreported (IUU) fishing on the legal catch of fisheries for Dissostichus eleginoides
population at a productive level with only a small chance of become depleted. The increasing levels of ... according to the escapement part of the decision rule. With fishing at levels greater than the long-term ... above the target status of abundance. A longterm sustainable fishery requires that IUU fishing be at ... , Dissostichus eleginoides, that can be sustained over the generation time of the species, maintaining the ...
Meeting Document : WG-FSA-02/69 : Author(s): A.J. Constable (Australia)
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Hydrography and acoustic biomass estimates of Antarctic krill (Euphausia superba) near the South Shetland Islands, Antarctica, during January 2000: preliminary results
Profiler (ADCP) were deployed to understand the physical structure of the water column at 11 stations. The ... presence of ‘Winter Water’ in mid layer and Circumpolar Deep Water at greater depths. Offshore water and ... Abstract: To estimate the abundance and distribution of Antarctic krill (Euphausia superba) in ... the vicinity of South Shetland Islands (SSI), a hydroacoustic/oceanographic survey was conducted by ...
Meeting Document : WG-EMM-00/52 : Author(s): D. Kang, Y. Lee, H.-C. Shin, W. Lee and S. Kim (Republic of Korea)
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Reproduction in Antarctic notothenioid fish - a review
% at spawning. Apart from a few nototheniid species the GSI of males is much less and typi6dlly only 15 ... –20% of that of females. Length at first spawning may be from 55% of Lmax onwards, but in many species ... at South Georgia which may begin spawning at about 40% of Lnax. Most species of the Seasonal Pack-ice ... although spawning is likely to take place annually. However, part of the populations of Champsocephalus ...
Meeting Document : SC-CAMLR-X/BG/12 : Author(s): Delegation of Germany
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Biomass of Antarctic krill around South Shetland using 2-dB difference method in April 2016
~9.8 dB at 50ping*2m. It did not show a big difference by cell size, but the shape of Krill was changed ... operated by Norway, Korea, and Japan, etc. Major fishing area is the surroundings of South Sheltland where ... . CCAMLR (Convention for the Conservation of Antarctic Marine Living Resources) is currently implementing a ... utilize Krill resources continuously. This study is aimed to estimate the density and the biomass of Krill ...
Meeting Document : WG-EMM-16/60 : Author(s): Delegation of the Republic of Korea
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Antarctic fur seals in the South Shetland Islands: pup production and population trends
30 January –5 February 2002. Multiple counts of pups at each colony were conducted to establish ... Abstract: Discovered in 1819, the South Shetland Islands soon became the focus of intensive ... were found at Cape Shirreff, Livingston Island in January 1960. In 1987, an archipelago-wide aerial and ... reports the results of a ground survey of all known fur seal colonies from Smith to Elephant Islands from ...
Meeting Document : WG-EMM-02/51 : Author(s): M.E. Goebel (USA), V.I. Vallejos (Chile), W.Z. Trivelpiece, R.S. Holt (USA) and J. Acevedo (Chile)
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Brief report on results of experimental harvest regime for the exploratory fishery for crab in the area of the South Orkney Islands (CCAMLR Subarea 48.2) during the 2009/10 season
in the area of the Southern Orkney Islands. Probably, the absence of crabs at the in March was ... connected to their seasonal migration to other depths. At the end of March, biological productivity of this ... Abstract: From March, 23 till April, 1, 2010 during the cruise of the Russian crabber vessel ... " Tamango " in CCAMLR zone, the searching operations were carried out in the area of the ...
Meeting Document : WG-FSA-10/44 : Author(s): Yu.V. Korzun and S.E. Anosov (Ukraine)
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The foraging range of Adelie penguins – implications for CEMP and interactions with the krill fishery
Abstract: This paper presents a summary of the foraging locations of the Ad6lie penguin at 7 ... not occur at these sites in normal ice years. It is suggested that an understanding of the potential ... widely spaced locations along the coast of Eastern Antarctica between 55°E near Enderby Land and 175°E in ... and return with krill. The pattern of foraging is similar between sites. The potential for overlap ...
Meeting Document : WG-EMM-96/69 : Author(s): Rodary, D., Thomson, R., Tremont, R., Lawless, R., Gardner, H., Wienecke, B., Clarke, J.R., Kerry, K.R., Corsolini, S., Eberhard, S.
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Evaluation on the performance of echosounder on a fishing vessel using maximum seabed backscattering
Abstract: The performance of echo sounder system is critical for using acoustic data collected ... and 2018) collected at a relatively fixed location with bottom depth around 200 m were used to ... calibration. The largest inter-annual difference of the mean value of the maximum seabed backscattering (S v ... , dB) for single ping were less than 1.0 dB with 0.35 dB and 0.78 dB at 120 kHz and 38 kHz ...
Meeting Document : SG-ASAM-18/06 : Author(s): X. Wang, X. Yu and X. Zhao