Search results
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Shedding new light on the life cycle of mackerel icefish in the Southern Ocean
Abstract: Mackerel icefish (Champsocephalus gunnari) has a widespread distribution in the ... considerably between populations in the southern Scotia Arc and those living further to the north. Fish living ... in the north mature one year earlier than in the south. They have a much shorter life span and die ... in the north. Stocks have declined in most parts of the distributional range due to the impact of ...
Meeting Document : WG-EMM-03/4 : Author(s): K.-H. Kock (Germany) and I. Everson (United Kingdom)
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Variations in food composition and feeding intensity of mackerel icefish (Champsocephalus gunnari) at South Georgia
) around Shag Rocks and the mainland of South Georgia was investigated in January/February 1985, January ... superba), the hyperiid Themisto gaudichaudii, mysids and in 1985 also Thysanoessa species. The proportion ... of krill and Themisto in the diet items varied considerably between the three seasons, whereas the ... proportion of mysids in the diet remained fairly constant. krill is obviously the prefered diet. In years of ...
Meeting Document : WG-FSA-92/26 : Author(s): K.-H. Kock (Germany), I. Everson (United Kingdom), S. Wilhelms (Germany), S. Campbell (United Kingdom), J. Szlakowski (Poland), G. Parkes (United Kingdom), Z. Cielniaszek (Poland) and C. Goss (United Kingdom)
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Entanglement of Antarctic fur seals (Arctocephalus gazella) in man made debris at Bird Island, South Georgia, during the 2006 winter and 2006/07 breeding season
total of 41 winter entanglements were observed in the reporting period compared to 2 observed in the ... previous winter. This is the second highest winter total since records began in 1990 (the highest was in ... loop of rope similar to that shown in appendix three. Plastic packaging bands were the second most ... ) were involved in 56% of all entanglements in winter and 53% in the summer. Overall females made up the ...
Meeting Document : SC-CAMLR-XXVI/BG/17 : Author(s): Delegation of the United Kingdom
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Reproduction in Antarctic notothenioid fish - a review
Abstract: Abstract: Gonad maturation in Antarctic notothenioid fish is a biennial process ... gunnari in the Atlantic Ocean sector do not spawn each year. Gonadosomatic index (GSI) of females is 15–40 ... –20% of that of females. Length at first spawning may be from 55% of Lmax onwards, but in many species ... Zone are autumn/winter spawners, whereas in the High-Antarctic Zone more species spawn in summer and ...
Meeting Document : SC-CAMLR-X/BG/12 : Author(s): Delegation of Germany
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REPORT ON TRANSHIPMENT OF KRILL IN 2009
Abstract: Report on transhipment of krill in 2009 Delegation of Japan Abstract: According to the ... in the CCAMLR Convention Area in 2009, as a background paper for CCAMLR annual meeting to be held in ... transshipments within the Convention Area”, especially in accordance with the paragraph 6 of the Measure, Japan ... submits the attached report on transshipment activities by its krill fishing vessel in CCAMLR Convention ...
Meeting Document : CCAMLR-XXIX/BG/05 : Author(s): Delegation of Japan
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Abundance, size and maturity of krill (Euphausia superba) in the krill fishing ground of Subarea 48.1 during 1990/91 austral summer
Abstract: Acoustic and net sampling surveys for krill were conducted in the krill fishing area ... heterogeneities in abundance and maturity of krill were observed. The survey region was divided into four zones ... ; oceanic, slope frontal, neritic and nearshore zones. The mean density of krill was low in the oceanic zone ... (8.5 g/m2), while, intermediate values in the frontal (37.3 g/m2) and neritic zone (28.1 g/m2), and ...
Meeting Document : WG-KRILL-92/26 : Author(s): T. Ichii, H. Ishii and M. Naganobu (Japan)
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Comparative biological characteristics of Electrona carlsbergi (Tåning) (Myctophidae) from the notal and Antarctic areas in the Southern Ocean Atlantic sector
length of fish from the Antarctic area increased while drifting eastward in the Antarctic circumpolar ... current waters. Fish specimens from 62 to 97 mm long were registered in catches. About 95% of specimens ... analysed were at age 2 to the west of 35°W and 3 yr old specimens, the portion of which made up to 40% in ... catches, occurred in much high amount to the east of 30°W. In the notal area the length of E. carlsbergi ...
Meeting Document : WG-FSA-90/21 : Author(s): K.V. Gorchinsky, V.M. Kiseleva and A.A. Filin (USSR)
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Proposal to continue the time series of research surveys to monitor abundance of Antarctic toothfish in the southern Ross Sea, 2016–2017
the relative abundance of sub-adult (<110 cm TL) toothfish in the core strata (A, B, C) in SSRUs ... toothfish in McMurdo Sound following the recommendations of WG-FSA (SC-CAMLR-XXXIII, Annex7, para 5.108) and ... Terra Nova Bay where substantial numbers of larger sub-adult and adult toothfish were captured in the ... basis, it is proposed that these two areas be surveyed in alternate years. Therefore, it is proposed to ...
Meeting Document : WG-SAM-15/45 : Author(s): S.M. Hanchet, S.J. Parker, S. Mormede and R.J.C. Currey (New Zealand)
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Revised assessment models for Patagonian toothfish in research block 58.4.4b_1 (SSRU 58.4.4bC) for the years 1990–2014
status assessments of Dissostichus eleginoides in the research block 58.4.4b_1 in the last WG-SAM meeting ... plausible model was considered as OB_1b model, which removed tag and CPUE observations in 2008, because the ... fits to CPUE in 2008 and MPD profiles for tags in the same year was spurious in OB_1a model which ... data in 2008 for OB_1b and other relevant models following the recommendations. The total IUU catches ...
Meeting Document : WG-FSA-15/23 : Author(s): K. Taki (Japan), S. Mormede (New Zealand) and T. Ichii (Japan)
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Indexing maturation of Antarctic toothfish (Dissostichus mawsoni) in the Ross Sea region
Abstract: The longline fisheries for Antarctic toothfish (Dissostichus mawsoni) in subareas 88.1 ... and 88.2 have provided more than a decade of observations to aid in understanding the life history and ... fish developing to spawn in the upcoming season. Evidence is accumulating that almost all Antarctic ... toothfish in the northern SSRUs have spawned in the previous season and are preparing to spawn in the ...
Meeting Document : WG-FSA-12/40 : Author(s): S. Parker and P. Marriott (New Zealand)