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1. A comparison between otoliths and scales for use in estimating the age of Dissostichus eleginoides from South Georgia

   considerably lower, leading to a more conservative management strategy. However the loss of wholesale value ... mean; z, is the effect of the ith level of the factor reading; bi is the effect of the jth level ... 0, and random error E,,,, were assumed to be independent, normally distributed random errors with mean ... significant using the conventional F-test, the individual means were tested using the Tukey Honestly ... Paper Title:  A comparison between otoliths and scales for use in estimating the age of ... the two readers in estimating the age of D. eleginoides using otoliths and scales. File:  05ashford ... understanding the population dynamics and productivity of a fish stock. The use of scales to estimate age can ... result in large errors in age data for long-lived species, usually due to compression of scale circuli ...

   Science Journal Paper : CCAMLR Science, Volume 8 (CCAMLR Science, Volume 8) : 75–92 : Author(s): Ashford, J.R., S. Wischniowski, C. Jones, S. Bobko and I. Everson

2. A composite recruitment index to describe interannual changes in the population structure of Antarctic krill at South Georgia

   (mean length 43 mm), while two other hauls (E177 and E257; densities of 135 and 60 krill ... m-2 respectively) contained small and large krill (mean length 27.5 and 49.2 mm respectively). All other net ... weighted by the mean acoustic density. Second, within each region the nets are weighted to a certain ... Peninsula and Weddell Sea areas. These values used four year classes with the mean size of l + krill ... substantial differences, due in part to bias arising from a large number of krill in just one of the station ... %), while between 1994 and 1998 the number of 1+ krill found in the population increased with a very ... Paper Title:  A composite recruitment index to describe interannual changes in the population ... net hauls. Therefore, when the number of station net hauls is limited, bias is likely to be reduced if ...

   Science Journal Paper : CCAMLR Science, Volume 6 (CCAMLR Science, Volume 6) : 71–84 : Author(s): Watkins, J.L

3. Long-term monitoring of krill recruitment and abundance indices in the Elephant Island area (Antarctic Peninsula)

   with hi fest mean density (1977/78) with the remainder, e inning with the year with lowest density, Tb ... ). Net haul abundance estimates will be re-calculated by replacing the stratified mean method ... of Elephant Island, along the permanent pack-ice zone. The mean length of these juvenile krill is 6 to 10 mm ... a dynamic flow pattern with eddies and meanders. It may be that the mean retention time for krill is much ... Paper Title:  Long-term monitoring of krill recruitment and abundance indices in the Elephant ... for the Elephant Island area with regard to the representativeness of the study area (60°-62 o 30´S ... interannual variability of krill recruitment is confirmed by the present analysis. Results are compared for ... were re-calculated applying the delta distribution approach introduced by de la Mare (1994a). The high ...

   Science Journal Paper : CCAMLR Science, Volume 4 (CCAMLR Science, Volume 4) : 19–35 : Author(s): Siegel, V., W. de la Mare and V. Loeb

4. Comparative feeding ecology of Patagonian toothfish (Dissostichus eleginoides) in the southwestern Atlantic

   , mean catch rates of up to 5 tonnes/hour have been reported by Otero et al. (1982) during spring ... "S, in the Malvinas/Falklands current, though reported mean catch rates are less than 0.3 tonnes/hour (Otero et al ... ', 30 mm gap) spaced at 1 m Table 1: Study details: vessels used, date, coordinates, mean depth ... , and a mean length of 52 cm TL (Cordo, 1995). In zone SG1 (<300 m deep), data from the South Georgia shelf ... principal fish species in the diet of D. eleginoides on the Argentinian continental shelf were nototheniids ... ). It was also found that the diet of D. eleginoides varied in relation to its size and water depth in ... Paper Title:  Comparative feeding ecology of Patagonian toothfish (Dissostichus eleginoides) in ... the southwestern Atlantic Abstract / Description:  The diet of Patagonian toothfish (Dissostichus ...

   Science Journal Paper : CCAMLR Science, Volume 4 (CCAMLR Science, Volume 4) : 105–124 : Author(s): García de la Rosa, S.B., F. Sánchez and D. Figueroa

5. Distribution, morphology and ecology of Macrourus whitsoni and M. caml (Gadiformes, Macrouridae) in the Ross Sea region

   1). Depth of capture was taken to be the mean of the depth recorded on the fishing vessel at the start ... and Fournier, 1981), and mean coefficient of variation (CV) (Chang, 1982), were calculated and bias plots ... for this to be meaningful. To assess the adequacy of the stomach samples for statistical analysis of diet variations ... individuals (Table 7; Figure 9). The low number of specimens available, especially for male fish, means ... in the Ross Sea region is presented. The number of rays in the left pelvic fin and number of rows of ... CCAMLR Subareas 88.1 and 88.2. There was a small but significant increase in the proportion of M ... , Macrouridae) in the Ross Sea region Abstract / Description:  Samples collected in 2008 led to the ... as M. whitsoni. The first comparison of the distribution and ecology of the two species of Macrourus ...

   Science Journal Paper : CCAMLR Science, Volume 20 (CCAMLR Science, Volume 20) : 37–61 : Author(s): Pinkerton, M.H., P. McMillan, J. Forman, P. Marriott, P. Horn, S. Bury and J. Brown

6. Estimation of krill (Euphausia superba) mortality and production rate in the Antarctic Peninsula region

   , by stepwise optimization, certain variables of single components of the distribution mixture (means, standard ... % led to four geographical coherent clusters which were interpreted to be biologically meaningful ... unweighted mean length frequency distribution calculated from the above relative distribution would bias ... were established in each cluster. The stratified mean (Saville, 1977) was then determined for each ... Paper Title:  Estimation of krill (Euphausia superba) mortality and production rate in the ... data of an identical survey with RV Polarstern in 1987/88. Seasonal variation between summer and winter ... ratio of 0.88 to 0.94 for different years. The exchange rate of water masses and krill biomass within ... biomass (including production) of 4.3 and 5.0 x 10 6 tonnes passing through the survey area during the ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/8 (Selected Scientific Papers, SC-CAMLR-SSP/8) : 159–176 : Author(s): Siegel, V.

7. Status of the krill stock around Elephant Island in 1991/92 and 1992/93

   and 1993. Abundance is expressed as stratified mean numbers per 1 000 m3. Status of Krill Stock Around ... ). Relative abundance, expressed as the stratified mean abundance standardised to numbers per 1 000 m3 ... frequency for the survey area was weighted according to the stratified mean abundance and the proportion ... spawned. Abundance Estimates The mean abundance estimates for krill during January and February/March ... Paper Title:  Status of the krill stock around Elephant Island in 1991/92 and 1992/93 Abstract ... / Description:  Krill stock composition and distribution patterns in the vicinity of Elephant Island during the ... appears to be a recurring and predictable aspect of the krill stocks in the Antarctic Peninsula region ... . The general distribution of krill length and maturity classes conformed to previous descriptions and ...

   Science Journal Paper : CCAMLR Science, Volume 1 (CCAMLR Science, Volume 1) : 7–33 : Author(s): Loeb, V. and V. Siegel

8. Attribtuion of acoustic echoes to squid in the south Atlantic

   BbInOBa IlnB C H ~ ~ O J I ~ L I I H M BbIJIOBOM KanbMapa, SIBPinMCb eAHHCTBeHHbIMH CBJIbHblMM ... ). The echo strength data are expressed in cubic metres as mean volume backscattering strength (MVBS ... through much of the area, at depths of 500 to 600 m. The width of the sounder beam at this depth means ... . Studies on acoustic target strength of squid, 111. Measurement of the mean target strength of small ... Paper Title:  Attribtuion of acoustic echoes to squid in the south Atlantic Abstract / Description ... :  During a research cruise of the British Antarctic Survey ship RRS James Clark Ross in February 1996, more ... than 2 000 individuals of the ommastrephid squid, Martialia hyadesi, were caught in a single haul made ... the analysis of acoustic data gathered during this haul and a survey of the immediate vicinity, in ...

   Science Journal Paper : CCAMLR Science, Volume 5 (CCAMLR Science, Volume 5) : 259–271 : Author(s): Goss, C., P. Rodhouse, J.L. Watkins and A.S. Brierley

9. Myctophids in the diet of Antarctic predators

   Biology Subcommittee. 2 Scientific Committee of the Convention on the Conservation of Antarctic Marine ... and A.G. WOOD. 1991. Food consumption by predators in CCAMLR Integrated Study Regions. In ... Paper Title:  Myctophids in the diet of Antarctic predators Abstract / Description:  The aim of ... , whales, fish and squids) in order to help evaluate the importance of myctophids in their diets. This ... found in the diet of one species of squid, 18 species of fish (Nototheniidae- eight, Channichthyidae ... , petrels- five, prions- one and cormorants- one) and two species of seals. Myctophids in the diet of ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/8 (Selected Scientific Papers, SC-CAMLR-SSP/8) : 335–368 : Author(s): Sabourenkov, E.

10. Biological characteristics of Antarctic fish stocks in the southern Scotia Arc region

    n Pseudochnerzichthys georgiarzus, HepecTtInHcb no ~ p a i i ~ e i i Mepe Ha 1-2 Mecxqa no3me, qeM ... was estimated from the mean spread between the tip of the wings times the distance travelled on the bottom ... coriiceps, by means of a tag-recapture experiment at Potter Cove, South Shetland Islands. Arch. Fish. Mar ... Paper Title:  Biological characteristics of Antarctic fish stocks in the southern Scotia Arc ... region Abstract / Description:  Commercial exploitation of finfish in the southern Scotia Arc took place ... , despite substantial catches in the first four years of the fishery and ample opportunity to sample these ... catches. The only scientific surveys of these stocks during these years were conducted by Germany in 1985 ...

    Science Journal Paper : CCAMLR Science, Volume 7 (CCAMLR Science, Volume 7) : 1–41 : Author(s): Kock, K.-H., C.D. Jones and S. Wilhelms

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