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Revised research plan for toothfish in Division 58.4.4b by Shinsei maru No. 3 in 2015/16
. We reset the revised research blocs drawn along the outer margin of grids because the previous block ... had not contained the eastern grids accurately, and recalculated the sea bed area sizes (600-1 800 m ... ) using the same GIS software (GEBCO_08 Grid, version 20100927) as the latest CCAMLR Statistical Bulletin ... . The estimated stock size in block 58.4.4b_1 was 510, 336 and 333 tonnes in CPUE analogy method ...
Meeting Document : WG-FSA-15/20 : Autor(es): Delegation of Japan
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Reports on abundance and biological information of toothfish in Division 58.4.4 a & b by Shinsei maru No. 3 in 2013/14 season
information of toothfish in the research blocks 58.4.4b_1 (SSRU 58.4.4C) and 58.4.4b_2 (SSRU 58.4.4D) of ... trotline system were made in the blocks. Total catch of Dissostichus eleginoides (excluding those tagged ... and released) was 26.6 tonnes in the survey area. Mean CPUEs in terms of weight of D. eleginoides was ... 32.9 kg / km (CV = 11.3%) and 38.3 kg / km (CV = 13.6%) in the blocks 58.4.4b_1 and 58.4.4b_2 ...
Meeting Document : WG-SAM-15/14 : Autor(es): Delegation of Japan
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Revised research plan for toothfish in Division 58.4.4 a & b by Shinsei maru No. 3 in 2013/14
comparative CPUE, modified Lincoln-Petersen and CASAL models following advices during the last WG-SAM meeting ... . Detailed results using CASAL models in SSRU C are described in a separated document. The catch and tagging ... data in SSRU D were not enough to be applied to modified Lincoln-Petersen and CASAL models. Thus the ... stock sizes of D. eleginoides in SSRU D is estimated only by using CPUE comparison with the stock size ...
Meeting Document : WG-FSA-13/36 : Autor(es): Delegation of Japan
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Antarctic fur seal population dynamics update and assessment of census error at SSSI No. 32, Livingston Island, South Shetlands, Antarctica (2000/2001)
Abstract: Cape Shirreff and San Telmo Islets (SSSI Nº32) shelter the largest breeding population ... of Antarctic fur seals, Arctocephalus gazella, in the South Shetland Archipelago. Since all censuses ... up to date have been single counts and do not allow the calculation of confidence limits, a protocol ... was developed for assessing uncertainties in the estimates of the counts (inter and intra-observer ...
Meeting Document : WG-EMM-01/49 : Autor(es): R. Hucke-Gaete (Chile)
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RESEARCH PLAN FOR TOOTHFISH IN DIVISION 58.4.4a & b BY SHINSEI MARU NO. 3 IN 2009/10
longitude grid points (spaced approximately 10 nautical miles apart). Almost all of the research hauls are ... employed for 93 research hauls (three quarters of the total) in order to make an evaluation of the stock ... status and biological characteristics of Dissostichus spp. with the information collected by the Trot ... line system in the same Division in 2007/08. The applied methodology is also considered to maintain the ...
Meeting Document : WG-SAM-09/11 : Autor(es): Delegation of Japan
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Decline of Antarctic fur seal (Arctocephalus gazella) population at SSSI No. 32, South Shetlands, Antarctica, during 1997/98: a discussion of possible causes
Abstract: Little is known of what happened after the exploitation period with the population of ... Antarctic fur seal (Arctocephalus gazella) on the Antarctic peninsula region, specifically on the South ... the northen tip of Livingston island, where the most important colony of this species on the South ... season diferentially counting sex and age categories to assess total population. We present the up to ...
Meeting Document : WG-EMM-98/17 : Autor(es): R. Hucke-Gaete, D. Torres, A. Aguayo and V. Vallejos (Chile)
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Research plan for toothfish in Divisions 58.4.4a and b by Shinsei Maru No. 3 in 2011/12
Abstract: A tagging survey in SSRUs B and C in Division 58.4.4 a & b was initiated in the ... 2010/11 fishing season with the aims of providing the data required for assessments of the population ... structure, size, movement and growth of Dissostichus spp. in the centered area of Division 58.4.4 a & b ... . In the 2010/11 a total of 189 D. eleginoides were tagged and released in SSRUs B and C. Four tagged D ...
Meeting Document : WG-SAM-11/07 : Autor(es): Delegation of Japan
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Research plan for toothfish in Division 58.4.4a & b by Shinsei Maru No. 3 in 2013/14
Division 58.4.4 a & b. Regarding SSRU C, the stock size was estimated by using following six methods; 1 ... ) CASAL_0_IUU model, and 6) CASAL_all_IUU model. This approach was made based on the WG-FSA’s recommendation ... stating that the sensitivity run of the CASAL model should be made by using levels of IUU ranging from ... zero to all observed IUU fishing, and using constant YCS (year class strength) in SSRU C. The ...
Meeting Document : WG-SAM-13/21 : Autor(es): Delegation of Japan
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Revised research plan for toothfish in Divisions 58.4.4 a and 58.4.4b by Shinsei maru No. 3 in 2012/13
Abstract: A tagging survey in SSRUs B and C in Division 58.4.4 a & b was conducted in the ... 2011/12 fishing season with the aims of providing the data required for assessments of the population ... structure, size, movement and growth of Dissostichus spp. in the centred area of Division 58.4.4 a & b ... . An approximate stock biomass level of Dissostichus spp. in the survey area was tentatively estimated ...
Meeting Document : WG-FSA-12/58 Rev. 1 : Autor(es): Delegation of Japan
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Revised research plan for toothfish in Division 58.4.4 a and b by Shinsei Maru No. 3 in 2011/12
Abstract: A tagging survey in SSRUs B and C in Division 58.4.4 a & b was initiated in the ... 2010/11 fishing season with the aims of providing the data required for assessments of the population ... structure, size, movement and growth of Dissostichus spp. in the centred area of Division 58.4.4 a & b ... . An approximate stock biomass level of Dissostichus spp. in the survey area (SSRUs B and C in Division ...
Meeting Document : WG-FSA-11/15 Rev. 1 : Autor(es): K. Taki, T. Iwami and M. Kiyota (Japan)