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Annual changes in species composition and abundance of myctophid fish in the north of South Georgia (Subarea 48.3), Antarctica, during austral winters from 2002 to 2008
Paper Title: Annual changes in species composition and abundance of myctophid fish in the north ... / Description: Species composition and abundance of myctophid fish were analysed using the fish by-catch ... samples collected by scientific observers on board Japanese commercial krill fishing vessels in the area ... 10 myctophid species were identified in the by-catch samples, among which Krefftichthys anderssoni ... 2003 survey was performed by the FV Chiyo Maru No. 5; the others were under- taken by the FV Niitaka ... P. choriodon was mostly unimodal with no significant differences among years (Figure 2a). The size ... scientific observers and the crew on board the FV Niitaka Maru and FV Chiyo Maru No. 5 for collecting by ... CCAMLR has expressed concerns about the impact of incidental catch in the krill fishery on some fish ...
Science Journal Paper : CCAMLR Science, Volume 18 (CCAMLR Science, Volume 18) : 155–163 : Autor(es): Iwami, T., M. Naganobu, K. Taki and M. Kiyota
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A simulation study of the method of deriving natural mortality rate using data for Champsocephalus gunnari in Subarea 48.3
Paper Title: A simulation study of the method of deriving natural mortality rate using data for ... Champsocephalus gunnari in Subarea 48.3 Abstract / Description: A method of determining the rate of natural ... mortality, based on the construction of a regression between the rate of annual fishing mortality ... (determined by VPA) and fishing effort is described. The intersect of this regression must be equal to zero if ... smaller in terms of absolute value than deviation of the assumed M from its "ideal" value. No theoretical ... WG-FSA-91/2S A SIMULATION STUDY OF THE METHOD OF ... and R.S. Dorovskikh* * Abstract A method of determining the rate of natural mortality, based on ... the construction of a regression between the rate of annual fishing mortality (determined by VPA ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/8 (Selected Scientific Papers, SC-CAMLR-SSP/8) : 69–83 : Autor(es): Gasyukov, P.S. and R.S. Dorovskikh
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Food and feeding of the mackerel icefish (Champsocephalus gunnari) around South Georgia in January/February 1991
Paper Title: Food and feeding of the mackerel icefish (Champsocephalus gunnari) around South ... Georgia in January/February 1991 Abstract / Description: The diet composition and feeding intensity of ... 877 stomachs collected at 44 stations. Both the proportion of krill (Euphausia superba) in the ... stomachs and the feeding intensity were uncommonly low in a period when energy rich food is needed for the ... ). An unusually high proportion of sexually mature fish showed no signs of the gonad development ... proportion of stomachs containing little or no food was highest in the west of South Georgia (Figure 2). 4 ... ). This indicates that the high proportion of stomachs in January/February 1991 containing little or no ... WG-FSA-91/29 FOOD AND FEEDING OF THE MACKEREL ICEFISH ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/8 (Selected Scientific Papers, SC-CAMLR-SSP/8) : 15–23 : Autor(es): Kock, K.-H., I. Everson, S. Campbell, G. Parkes, Z. Cielniaszek and J. Szlakowski
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The use of predator-derived krill length-frequency distributions to calculate krill target strength
Paper Title: The use of predator-derived krill length-frequency distributions to calculate krill ... target strength Abstract / Description: The relationship between krill abundance and predator ... krill sampled from the diet of predators to provide a length-frequency distribution of krill at times ... calculated from acoustic data. Changes in the lengthfrequency distribution of krill over a period of a few ... CCAMLR Science, Vol. 8 (2001): 155-163 SHORT NOTE THE ... Marine Laboratory, University of St Andrews St Andrews, Fife KY16 BLB, United Kingdom Abstract The ... resource management. We propose a method using krill sampled from the diet of predators to provide a ... robust estimate of krill abundance to be calculated from acoustic data. Changes in the length ...
Science Journal Paper : CCAMLR Science, Volume 8 (CCAMLR Science, Volume 8) : 155–163 : Autor(es): Reid, K. and A.S. Brierley
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Acoustic estimates of krill biomass in the Elephant Island area: 1981–1993
Paper Title: Acoustic estimates of krill biomass in the Elephant Island area: 1981–1993 Abstract ... / Description: Acoustic estimates of krill biomass in the vicinity of Elephant Island are presented for the ... years 1981 to 1993 (with the exception of 1982 and 1986). Estimates for 1981 to 1991 are based on ... previous reports adjusted for the recently proposed definition of krill target strength (Greene et al ... BIOMASS IN THE ELEPHANT ISLAND AREA: 1981 - 1993 R.P. Hewitt Southwest Fisheries Science Center La ... 92093, USA (Supported by the Hertz Foundation) Abstract Acoustic estimates of krill biomass in the ... vicinity of Elephant Island are presented for the years 1981 to 1993 (with the exception of 1982 and 1986 ... ). Estimates for 1981 to 1991 are based on previous reports adjusted for the recently proposed definition of ...
Science Journal Paper : CCAMLR Science, Volume 1 (CCAMLR Science, Volume 1) : 1–5 : Autor(es): Hewitt, R.P. and D.A. Demer
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Champsocephalus gunnari stock status in the South Georgia area
Paper Title: Champsocephalus gunnari stock status in the South Georgia area Abstract ... and TAC for C. gunnari. Stock estimates were obtained using VPA with the following variations: mean F ... weighted F. For 1986/87 the values obtained by different methods differed considerably from each other ... prediction the stock size value was obtained by VPA with variations using F regression methods. The ... THE SOUTH GEORGIA AREA R. Borodin, P. Kochkin Abstract Data of age composition and fishing ... were obtained using VPA with the following variations: mean F, Gamma methods, Pope and Shepherd method ... , using F regression on fishing effort and method of average weighted F. For 1986/87 the values ... method) to 213 thousand tonnes (Pope-Shepherd method). For T AC prediction the stock size value was ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/5 – Part II (Selected Scientific Papers, SC-CAMLR-SSP/5 – Part II) : 1-18 : Autor(es): Borodin, R. and P. Kochkin
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Cephalopod research in the Antarctic
Paper Title: Cephalopod research in the Antarctic Abstract / Description: Cephalopods are a ... major component of the Antarctic marine food web and it seems inevitable that they will be the subject ... of future commercial exploitation. Research is being carried out at BAS on the species composition ... policy for management of Antarctic cephalopods. In view of the rapidity that cephalopod fisheries can ... not exhaustive (see Clarke, 1980) and there is almost no information about the relationships between ... - 323 - CEPHALOPOD RESEARCH IN THE ANTARCTIC P.G ... . Rodhouse (United Kingdom) Abstract SC-CAMLR-VI/BG/ll Cephalopods are a major component of the ... Antarctic marine food web and it seems inevitable that they will be the subject of future commercial ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 323-334 : Autor(es): Rodhouse, P.G.
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Otolith and body size relationships in the mackerel icefish (Champsocephalus gunnari)
Paper Title: Otolith and body size relationships in the mackerel icefish (Champsocephalus gunnari ... ) Abstract / Description: A large sample of otoliths from the mackerel icefish (Champsocephalus gunnari) was ... measured and weighed and their effectiveness as predictors of fish length and fish mass determined. The two ... measures, otolith length and otolith mass, provide good predictors of fish length, the latter being ... analyses there was no significant difference between the results for male and female fish. Sex was not ... length. log,,-transformed data from all years with no restriction on range. The equation for all years ... all years with no restriction on range. The equation is: loglOWf = -0.0177 + 4.57 log10 L, (SEs ... Sea, Rep. No. CM 1979/n, 14. Reid, K. 1995. The diet of Antarctic fur seals (Arctocephalus gazella ...
Science Journal Paper : CCAMLR Science, Volume 6 (CCAMLR Science, Volume 6) : 117–123 : Autor(es): Everson, I., B. Bendall and A. Murray
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Preliminary results of investigations of the Federal Republic of Germany on Notothenia rossii marmorata (Fischer, 1885) in January/February 1985
Paper Title: Preliminary results of investigations of the Federal Republic of Germany on ... further basic data needed for stock assessment purposes, to assess the actual size of Notothenia rossii ... around South Georgia and Elephant Island and the extent to which the measures adopted by CCAMLR to ... rebuild the stock around South Georgia might be successful. Although reported catches in recent years have ... -CAMLR-IV/BG/11 1985 PRELIMINARY RESULTS OF INVESTIGATIONS OF THE FEDERAL REPUBLIC OF GERMANY ON ... needed for stock assessment purposes, to assess the actual size of Notothenia rossii around South ... Georgia and Elephant Island and the extent to which the measures adopted by CCAMLR to rebuild the stock ... . rossii around South Georgia is still largely affected by the fishery. Stock size is probably still less ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/2 (Selected Scientific Papers, SC-CAMLR-SSP/2) : 33-57 : Autor(es): Kock, K.-H.
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By-catch of fish in the krill fishery
Paper Title: By-catch of fish in the krill fishery Abstract / Description: Observations are ... reported of icefish being taken as by-catch during krill fishing operations from a research vessel. The ... results indicate that the by-catch of fish in the commercial krill fishery may be significant in some ... areas of the South Georgia shelf. The problem is thought to be least in open ocean krill fishing. File ... South Georgia is at its peak during the winter months and our results give no information for that ... in deep water beyond the limits of this map and where no fish were caught have been excluded. Key ... WG-KRILL-9l/25 BY·CATCH OF FISH IN THE KRILL FISHERY ... taken as by-catch during krill fishing operations from a research vessel. The results indicate that the ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/8 (Selected Scientific Papers, SC-CAMLR-SSP/8) : 381–401 : Autor(es): Everson, I., A. Neyelov and Y.B. Permitin