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1. Age and growth of Antarctic euphausiacea (crustacea) under natural conditions

   Peninsula and the south-eastern Weddell Sea. Life spans range from two years for Euphausia frigida to six ... years for the krill Euphausia superba. Growth in length and weight was calculated by non-linear ... eastern Weddell Sea. Former opinions that differ are discussed. Seasonal growth was re-analyzed for the ... spawn at least twice and in some cases three times during their life, except for E. frigida which spawns ... south-eastern Weddell Sea. Life spans range from two years for Euphausia frigida to six years for the ... . Former opinions that differ are discussed. Seasonal growth was re-analyzed for the species Euphausia ... least twice and in some cases three times during their life, except for E. frigida which spawns only ... triacantha, and a three-year life span proposed. Male Euphausia cr¥stallorophias have a shorter life span ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 369-370 : Autor(es): Siegel, V.

2. Characteristics of krill aggregations in the South Sandwich Islands subarea in January–February 2000

   spatial distribution patterns of krill aggregations on the horizontal and vertical distribution of krill ... , acoustic sampling protocols and data processing methods based on a two-frequency algorithm were detailed ... . Pa ra m et er T ra w l 72 / 30 8 V er ti ca l o pe ni ng (m ) 35 H or iz on ta l o ... 20 00 19 83 19 90 Po te nt ia l F is hi ng G ro un d s (J an ua ry ... spatial distribution of krill and sizes of possible catches on potential fi shing grounds calculated for ...

   Science Journal Paper : CCAMLR Science, Volume 9 (CCAMLR Science, Volume 9) : 145–164 : Autor(es): Kasatkina, S.M., A.P. Malyshko, V.N. Shnar and O.A. Berezhinsky

3. Integration of CPUE data into assessments using the Generalised Yield Model

   / Description:  For the last three years, CCAMLR's Working Group on Fish Stock Assessment (WG-FSA) has ... the use of importance sampling, for incorporating information on trends in standardised CPUEs into GYM ... into assessments using the Generalised Yield Model (GYM). In this paper, we propose a method, based on ... assessments. The use of the method is illustrated using data for Patagonian toothfish (Dissostichus ... Group on Fish Stock Assessment (WG-FSA) has had available to it two indicators of stock status for ... for fishable biomass, but in two years (1996 and 1997), they fall just outside. The second proposed ... terms of an application of importance sampling, and for providing guidance on appropriate diagnostics ... . We also thank Tony Smith and an anonymous referee for their comments on the manuscript. Geoff ...

   Science Journal Paper : CCAMLR Science, Volume 8 (CCAMLR Science, Volume 8) : 65–74 : Autor(es): Kirkwood, G.P. and A.J. Constable

4. 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

   samples collected by scientific observers on board Japanese commercial krill fishing vessels in the area ... Maru. An Otter midwater trawl of ca. 100 m long with a horizontal open- ing of ca. 20 m and a vertical ... myctophids is too difficult for on-board scientific observers. results and discussion A total of 1 203 ... scientific observers and the crew on board the FV Niitaka Maru and FV Chiyo Maru No. 5 for collecting by ... on ta in in g fis h by -c at ch . D at e: 20 02 20 03 20 04 20 05 20 06 20 07 20 ...

   Science Journal Paper : CCAMLR Science, Volume 18 (CCAMLR Science, Volume 18) : 155–163 : Autor(es): Iwami, T., M. Naganobu, K. Taki and M. Kiyota

5. Abundance, size and maturity of krill (Euphausia superba) in the krill fishing ground of Subarea 48.1 during the 1990/91 austral summer

   sampling surveys for krill were conducted in the krill fishing ground north of the South Shetland Islands ... were generated, suggesting that hydrodynamic convergence might be responsible for accumulation of krill ... been lower than expected until early February 1991. As for maturity stages of krill, spawning krill ... neritic and nearshore zones. This indicates that slope frontal features may be important for the formation ... 1991 (Figure 1). Transects ran in an offshore-inshore direction with 20 n miles between the transects ... NOAA-A satellites. Typically, twelve locations per day were recorded for each buoy with an accuracy ... biomass estimate for the inshore region, this region was divided into two zones: neritic and nearshore ... ) 188 where Bi = biomass for i-th zone Ai = area for i-th zone. The total biomass (B t) for an ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/9 (Selected Scientific Papers, SC-CAMLR-SSP/9) : 183–199 : Autor(es): Ichii, T., H. Ishii and M. Naganobu

6. Optimization of survey sampling design in the detection of interannual variability and prey size selectivity in the diet of penguins

   and prey size selectivity in the diet of penguins Abstract / Description:  Based on the preliminary ... results of a survey of prey size in Adélie penguins, sampling designs intended for the detection of inter ... inter-annual variation for mean prey size is fixed at 10%; the test power is taken as 0.9 and Type I ... errors fixed at 0.1. Cost values of manpower required are based on Argentinian logistics. File:  34 ... colonies, etc. For Esperanza Base it was estimated on the basis of two people working for two and a half ... . Depending on methods, experience, etc, for Esperanza Base it was estimated based on two people working for ... dividing the mean square for "years" group by the mean square for "dates-within-years" group. Given the ... Model 11 ANOVA), the expected mean square for "years" group is: (1) 553 where aicp is the ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 551–559 : Autor(es): Marschoff, E. and B. Gonzalez

7. Spawning locations of mackerel icefish at South Georgia

   :  Historical information on the distribution of spawning and larval mackerel icefish (Champsocephalus gunnari ... inshore spawning at South Georgia during April within and close to the bays on the north side of the ... weak. Concentrations of larval icefish within Cumberland Bay are an order of magnitude higher than in ... following day, two on 20 March and 14 on 30 March. 011 5 April the catch was just three, and no further ... , spawning, South Georgia, CCAMLR INTRODUCTION Over the past 30 years there has been a fishery, large in ... coast of South Georgia. Sampling was undertaken using an RMT8 at stations up to 20 k m from the mouth ... on the shelf or close inshore along the north coast of South Georgia. Extensive year-round sampling ...

   Science Journal Paper : CCAMLR Science, Volume 8 (CCAMLR Science, Volume 8) : 107–118 : Autor(es): Everson, I., A.W. North, A. Paul, R. Cooper, N.C. McWilliam and K.-H. Kock

8. Surface water circulation in krill fishing areas near the South Shetland Islands

   with a drogue attached at a depth of 30 m to assess flow patterns at the depth range where krill tended ... to be most abundant. The buoys were tracked using the ARGOS satellite positioning system. Based on ... Islands to the South Georgia and South Orkney Islands on a time scale of 110 to 120 and 85 days ... Orkneys for 20 days before drifting to South Georgia. Buoy 4, deployed in the shelf region, moved east ... currents which had properties of retention. In addition to positions of catches for the past 13 years ... at a depth of 30 m to assess flow patterns at the depth range where krill tended to be most abundant ... . The buoys were tracked using the ARGOS satellite positioning system. Based on buoy tracks, the ...

   Science Journal Paper : CCAMLR Science, Volume 3 (CCAMLR Science, Volume 3) : 125–136 : Autor(es): Ichii, T. and M. Naganobu

9. Operational interactions of sperm whales and killer whales with the Patagonian toothfish industrial fishery off southern Chile

   eleginoides) fishery operations were assessed in southern Chile during surveys with observers on board ... industrial fishing vessels between April 2002 and March 2003. For the 180 hauls monitored, the evidence of ... mode and median of the depredation rate was 0, the global impact of cetaceans on the fishing yield is ... depredation decreased to 0%; this could be the result of killer whales preferring to predate on sperm whales ... parameters on a spatio–temporal scale. To make robust estimates of confi dence intervals (CIs) for ... Sep Oct Nov Dec Month S pe rm w ha le s (in di vi du al s) 0 10 20 30 40 50 60 70 ... 80 90 E ffo rt ( ha ul s ob se rv ed ) (a) 0 5 10 15 20 25 30 35 40 45 Jan Feb ... 20 30 40 50 60 70 80 90 E ffo rt ( ha ul s ob se rv ed ) (b) (a) (b) Hucke ...

   Science Journal Paper : CCAMLR Science, Volume 11 (CCAMLR Science, Volume 11) : 127–140 : Autor(es): Hucke-Gaete, R., C.A. Moreno and J. Arata

10. CPUEs, body length and greenness of Antarctic krill during 1987/88 season in the fishing ground north of Livingston Island

    there was a marked change in two kinds of CPUEs, body length and greenness of krill during the fishing ... season, these parameters were examined for each 10-day period of the Japanese krill fishery in the ... from these data. The percentages of “Egui” as an indicator of greenness of krill were too variable ... among trawlers to be an objective indicator at present. File:  17-Endo-and-Ichii.pdf ... . Additionally, after the co-operative survey, krill biomass on this fishing ground was estimated by an echo ... integrator. Two kinds of CPUEs, body length and greenness of krill were examined for each 10-day period ... Livingston Island as the area between 59°30'W and 61°30'W and between 61°30'S and 62°30'S (Figure 1). Two ... even for production of boiled and frozen products were checked. Data on the above items, coming from ...

    Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/6 (Selected Scientific Papers, SC-CAMLR-SSP/6) : 323–338 : Autor(es): Endo, Y. and T. Ichii

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