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1. A simulation study of krill fishing by an individual Japanese trawler

   . A major inconsistency is found: haul times are a factor of 4-5 times greater in reality than in the ... abundance indices (generally of a CPUE form) for krill biomass in the 600 n mile square oceanic sector ... modelled are considered, and their performance in response to a variety of ways in which the overall krill ... to be considered to monitor changes in the number, distribution and size of krill concentrations ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/5 – Part I (Selected Scientific Papers, SC-CAMLR-SSP/5 – Part I) : 1–108 : Author(s): Butterworth, D.S.

2. Feeding patterns of nine species of Antarctic fish and assessment of their daily food consumption

   ~OB B ~eJlSlx H3YlleHHSI HX CYTOllHoro pa~HOHa. O~Ha CYTOllHaSl CTaH~HSI 6blJla BbInOJlHeHa B Mope ... with equation (3) the constant value A = 0.048 - 0.019 when T90 is within the above-mentioned range. The mean ... Cw = [yAT-y(O)+y(T)] - -WO T where Cw is expressed in percent of body mass, y - mean index ... , T - duration of observations (36 hours), y(O) and y(T) mean indices of stomach fullness at the beginning ... fish species in Antarctic waters. The aim of this study is to collect information on the feeding ... patterns of several commercially non-targeted species in the Indian Ocean sector of the Southern Ocean ... food consumption Abstract / Description:  Little is known about the feeding patterns of non-commercial ... concentrated on analysing the food composition of these species to find out their daily diet. One 36-hour ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/8 (Selected Scientific Papers, SC-CAMLR-SSP/8) : 321–333 : Author(s): Pakhomov, Y.A. and V.B. Tseitlin

3. Reproductive performance of seabirds and seals at South Georgia and Signy Island, South Orkney Islands, 1976-1987: implications for Southern Ocean monitoring studies

   Y qepHo6pOBOfO, CepOfOJJOBOfO I1 CTpaHcTBy~efo aJJb6aTpOCOB, nanyaccKofO I1 30JIOTOBOJJOCOfO nI1HfBI1HOB I1 IO ... reviewed. Breeding success of the wandering albatross, which breeds in winter and eats fish and squid, has ... fluctuations in reproductive performance of the krill-eating, summer-breeding penguins at Signy Island are not ... in 1980-81 and 1982-83) with the date of ice break-out in late spring. Numerous parameters of ... / Description:  Aspects of the reproductive performance over the last decade of black-browed, grey-headed and ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 445-447 : Author(s): Croxall, J.P., T.S. McCann, P.A. Prince and P. Rothery

4. Discrimination of Macrourus whitsoni and M. caml (Gadiformes, Macrouridae) using otolith morphometrics

   species of grenadier in the Ross Sea region means that, at the time of writing, there are insufficient ... , years) from otolith morphometrics. ‘RMS’ is the root-mean square error of the prediction. Species ... using otolith morphometrics to reach 80% of the mean maximum length and one specimen was aged at 62 ... fishery in the Ross Sea region is comprised of two species, rather than being solely Macrourus whitsoni ... , was recognised in 2010 with the identification of a new species, M. caml. Grenadier are the main by ... the abundance of toothfish reduces. In order to improve information on the spatial distribution, age ... otolith morphometrics Abstract / Description:  That the predominant by-catch of grenadier by the toothfish ...

   Science Journal Paper : CCAMLR Science, Volume 22 (CCAMLR Science, Volume 22) : 15–28 : Author(s): Pinkerton, M.H., C. Ó Maolagáin, J. Forman and P. Marriott

5. Small scale krill surveys: simulations based on observed euphausiid distributions

   that the coefficient of variation (CV) of mean krill density varies inversely with mean density, and is lowest ... . Calculations based on the power of surveys to reliably detect changes in mean density indicate ... to detect changes of 40% in the mean if CVs are as high as those obtained in the simulations. File:  15 ... ) of mean krill density varies inversely with mean density, and is lowest for the survey design utilising ... (cv) of mean krill density varies inversely with mean density, and is lowest for the survey design ... on the power of surveys to reliably detect changes in mean density indicate that with probability of Type ... of 40% in the mean if CVs are as high as those obtained in the simulations. Resume L'observation ... lines in krill abundance, and this meant across the mean direction of ocean currents. Some ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/8 (Selected Scientific Papers, SC-CAMLR-SSP/8) : 245–256 : Author(s): Agnew, D.J. and S. Nicol

6. Seabird interactions with longlining operations for Dissostichus eleginoides at the South Sandwich Islands and South Georgia

   ). There is increasing evidence tha t these decl ines a re re la ted to inc identa l mortality associated ... in their longline f ishery. In respect of longl ine f isheries for Dissostichus eleginoides in the Southern ... Ocean, the Commission for the Conservation of Antarctic Marine Living Resources (CCAMLR) adopted ... Conservation Measure 29/X (Minimisation of the Incidental Mortality of Seabirds in the Course of Longline ... involving the setting and hauling of longlines to catch the toothfish Dissostichus eleginoides around the ... of birds are clearly potentially vulnerable to setting operations in daylight hours. Several species ... of the seabirds present presumably originated from South Georgia populations; however wandering and ... vulnerability to longlining operations in the South Sandwich Islands may, therefore, be low. Quantitative data ...

   Science Journal Paper : CCAMLR Science, Volume 1 (CCAMLR Science, Volume 1) : 143–153 : Author(s): Ashford, J.R., J.P. Croxall, P.S. Rubilar and C.A. Moreno

7. Distribution and population structure of Dissostichus eleginoides and D. mawsoni on BANZARE Bank (CCAMLR Division 58.4.3b), Indian Ocean.

   fish recorded during the three fishing seasons were 42 and 206 cm TL respectively (Table 1). The mean ... respectively (Table 1). The mean TL of females (147.5–148.6 cm) was significantly larger than that of males ... the three fishing sea- sons, showing reproductive condition in the resting stage (Table 2). The mean GSI ... sexual matu- rity on BANZARE Bank as maturing/resting and developing (Table 2). The mean GSI was 7.8–7.9 ... of antifreeze in the former species. Dissostichus eleginoides showed a resting stage in sexual ... latitudinal patterns in sexual maturity and size composition. The study indicates that the management of ... shallower banks (<1 000 m), while D. mawsoni was caught on deeper slopes (>1 500 m). Separation of the ... two species by depth may be related to physical intolerance to cooler temperatures because of the lack ...

   Science Journal Paper : CCAMLR Science, Volume 18 (CCAMLR Science, Volume 18) : 145–153 : Author(s): Taki, K., M. Kiyota, T. Ichii and T. Iwami

8. Length-based assessment for mackerel icefish (Champsocephalus gunnari) at South Georgia

   - strapped across hauls but within regions to obtain mean and variance estimates for the survey den- sity ... by length bin and region. A population length frequency was then derived by taking a weighted mean ... = å å  . (1) These re-weighted data were then bootstrapped across all regions and hauls to obtain the mean Hillary ... - at-length (mean and standard error) as derived from the re-weighted survey data using the non- stratified ... accurate identification of age cohorts from the survey data. In this paper a length-based approach is ... data which, in conjunction with the bootstrapped survey biomass data, yields an estimate of the ... (Champsocephalus gunnari) in Subarea 48.3 employs the CCAMLR mixture analysis program (CMIX) and generalised yield ... described that removes the problem of cohort determination. A bootstrap technique (consistent with the ...

   Science Journal Paper : CCAMLR Science, Volume 17 (CCAMLR Science, Volume 17) : 129–137 : Author(s): Hillary, R.M., C.T.T. Edwards, R.E. Mitchell and D.J. Agnew

9. Do krill and salps compete? Contrary evidence from the krill fisheries

   significant. The mean effect due to a given factor can be illustrated by plotting the predicted value ... . The predicted mean proportion of green krill for different salp densities is shown in Figure 5. The estimates ... for each area were standardised to February and an overall mean temperature of 1.59 ... area and (b) Elephant Island area are standardised to February and a mean temperature of 1.59 ... Peninsula. Interannual and seasonal variability of the timing, duration and intensity of salp blooms and the ... presence of green krill were analysed. No relationship between salp density and the proportion of green ... krill in the catches was evident when both salps and krill were taken together. In the Livingston Island ... area, the proportion of green krill was high only when salp density was extremely low. However, no ...

   Science Journal Paper : CCAMLR Science, Volume 5 (CCAMLR Science, Volume 5) : 205–216 : Author(s): Kawaguchi, S., T. Ichii, M. Naganobu and W.K. de la Mare

10. Age and growth of spiny icefish (Chaenodraco wilsoni Regan, 1914) off Joinville–D’Urville Islands (Antarctic Peninsula)

    ) (Beamish and Fournier, 1981) and the mean coefficient of varia- tion (CV) (Chang, 1982) were calculated ... dataset rather than the mean length-at-age (Haddon, 2001). The growth performance index (Φ’ = 2 log ... ) and mean coefficient of variation (CV) between age readings; n is the number of pairwise age estimates ... in ageing icefish by means of otolith reading. Growth rates of juvenile C. wilsoni seem to be in line ... in moulds. The precision of age estimates between readings was tested applying both the average ... , although it had a much shorter life span. The part of the population of C. wilsoni caught in the study area ... Islands (Antarctic Peninsula) in February–March 2006 and January 2007. A total of 218 specimens were ... selected for the study, consisting of 120 females and 98 males. The age of fish was estimated by counting ...

    Science Journal Paper : CCAMLR Science, Volume 16 (CCAMLR Science, Volume 16) : 115–130 : Author(s): La Mesa, M., A. De Felice, C.D. Jones, K.-H. Kock

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