Search results
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Cetaceans as indicators of historical and current changes in the East Antarctica ecosystem
factors. This paper reviews the scientific information of whales that could be indicative of changes in ... the East Antarctica ecosystem in the context of two hypotheses, the ‘krill surplus’ hypothesis in the ... whale, which had not been exploited on a large scale. A review of the scientific information in East ... Antarctica (70°E-170°W) showed that the increased krill availability in the middle of the past century could ...
Meeting Document : WG-EMM-16/64 : Author(s): Y. Fujise and L.A. Pastene
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A characterisation of the toothfish fishery in Subareas 88.1 and 88.2 from 1997/98 to 2006/07
years in Subarea 88.1 and for five years in Subarea 88.2. This report summarises the large amount of ... there was a large overrun of the catch limit in the North region, the overall catch limit for Subarea ... 88.1 was only exceeded by 2%. The catch limit was under caught in Subarea 88.2. The concentration of ... truncation of the overall length frequency distribution, and no evidence for a reduction in fish length in ...
Meeting Document : WG-FSA-07/28 : Author(s): S.M. Hanchet, M.L. Stevenson and A. Dunn (New Zealand)
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Revised research plan for the 2013/14 exploratory longline fishery of Dissostichus spp. in Subarea 48.6
such a way that the numbers of tag recoveries in the 2016 season shows an approximately 0.3 of ... blocks, in order to promote successful stock assessment. We tentatively examined the degree of coverage ... of the austral summer sea-ice during past 10 years in the current research blocks and an additional ... . mawsoni in 2011, in order to maximize the use of tagged fish. We propose the extension of the east ...
Meeting Document : WG-FSA-13/37 : Author(s): Delegation of Japan
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A CHARACTERISATION OF THE TOOTHFISH FISHERY IN SUBAREAS 88.1 AND 88.2 FROM 1997–98 TO 2007–08
of data collected on toothfish and the associated bycatch by all vessels participating in the fishery ... time. Although moderate numbers of small fish are caught in some years (e.g., on the Shelf in 1999 and ... . Stevenson, S.M. Hanchet and A. Dunn (New Zealand) Title: A CHARACTERISATION OF THE TOOTHFISH FISHERY IN ... eleven years in Subarea 88.1 and for six years in Subarea 88.2. This report summarises the large amount ...
Meeting Document : WG-FSA-08/22 : Author(s): M.L. Stevenson, S.M. Hanchet and A. Dunn (New Zealand)
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Revised research plan for the 2015/16 exploratory longline fishery of Dissostichus spp. in Subarea 48.6
larger than those using the CPUE method in the block 48.6_3 and 48.6_4. Predicted numbers of tag ... associated life stages of the fish. To this end, we propose to follow the current research style in the ... the procedure recommended at the WG-FSA in 2013 in order to maximize the expectation of tag-recapture ... Abstract: The current season (2014/15) is the final one of the first three-season research which ...
Meeting Document : WG-FSA-15/16 Rev. 1 : Author(s): Delegation of Japan
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Population structure of icefish (Champsocephalus gunnari) in the South Georgia area (Antarctic)
Abstract: The living conditions of Champsocephalus gunnari in the eastern, western shelf areas of ... inhabiting the areas at Shag Rocks and South Georgia is characterized with the lack of fish below 11 cm in ... length and older than 6-7 years (10-11 years in the South Georgia area) and considerably lower number of ... large fish above 40 cm in length in catches. These distinctions are the result of a certain geographic ...
Meeting Document : WG-FSA-04/40 : Author(s): Zh.A. Frolkina and I.A. Trunov (Russia)
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Research plan for the 2015/16 exploratory longline fishery of Dissostichus spp. in Division 58.4.1
by all effective vessels were analyzed for the improvement of stock assessment in the research blocks ... in development of GSI in summer comparable with those in the north of Subarea 48.6 and Banzare Bank ... associated life stages of the fish. To this end, we propose to follow the current research style in the ... procedure recommended at the WG-FSA in 2013 in order to maximize the expectation of tag-recapture to the ...
Meeting Document : WG-SAM-15/05 : Author(s): Delegation of Japan
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Characterisation of skate catches in the Ross Sea region
in the Ross Sea Region, including the data collected in the two “Year of the Skate” fishing seasons ... in 2008/09 and 2009/10. The composition of the skate catch by species is uncertain; it is estimated ... released in the same region over the same period of time. There were also differences in the distribution ... instrumental in collecting further data on skates, in particular length and tagging data. The quality of the ...
Meeting Document : WG-FSA-10/25 : Author(s): S. Mormede and A. Dunn (New Zealand)
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Variations in the diet composition and feeding intensity of mackerel icefish (Champsocephalus gunnari) at South Georgia (Antarctic)
) around Shag Rocks and the mainland of South Georgia was analyzed from c. 8,700 stomachs collected in ... Thysanoessa species. The proportion of krill and Themisto in the diet varied considerably between the three ... seasons, whereas the proportion of mysids in the diet remained fairly constant. Krill which has a high ... energy content appears to be the prefered diet. In years of krill shortage, such as in 1991, krill is ...
Meeting Document : WG-FSA-93/24 : Author(s): K.-H. Kock and S. Wilhelms (Germany), I. Everson (United Kingdom) and J. Gröger (Germany)
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Biological characteristics of Antarctic fish stocks in the Southern Scotia Arc region
Abstract: Commercial exploitation of finfish in the southern Scotia Arc took place from 1977/78 ... catches in the first four years of the fishery and the possibility to sample these catches extensively ... 55-60% from one shelf area to the other mostly due to differences in the occurrence of the abundant ... species on each shelf area and the increase in the number of high-Antarctic species in the South Orkney ...
Meeting Document : WG-FSA-99/16 : Author(s): K.-H. Kock (Germany), C. Jones (USA) and S. Wilhelms (Germany)