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1. Geographical differences in the condition, reproductive development, sex ratio and length distribution of Antarctic toothfish (Dissostichus mawsoni) from the Ross Sea, Antarctica (CCAMLR Subarea 88.1)

   South shelf North South break South shelf 100 90 80 70 60 50 40 30 20 10 0 North South break ... Fulton’s condition index (K) has been calculated for the five sampling seasons. This index assumes an ... essentially unimodal with the average value for all years occurring at about 141 cm TL for males and 152 cm ... with a 30 cm range over maturity (i.e. 85–115 cm TL). This equates to 50% maturity at about age 9. As ...

   Science Journal Paper : CCAMLR Science, Volume 13 (CCAMLR Science, Volume 13) : 27–45 : Autor(es): Fenaughty, J.M

2. Size at sexual maturity of Patagonian toothfish (Dissostichus eleginoides)

   (Dissostichus eleginoides) caught in the commercial fishery within Subarea 48.3. The results for 1996 indicate ... that L m50 occurs at 78.5 cm total length for male and 98.2 cm for female fish. In 1997 the results for ... male fish were essentially the same. For female fish there is evidence that in 1997 a significant ... allowing for this bias indicates that L m50 for female fish in 1997 was no different to that for 1996. The ... leading to an enlarged ovary of about 20% of the fish total mass. Spawning occurs in the period July to ... 1996 and 1997 calendar years were prepared by the CCAMLR Data Manager and provided for the purpose ... fit logistic models with an additional parameter for non-response (usually called 'immunity' in the ... language of bioassay - see Finney, 1978, Chapter 20) to cater for the situation where a proportion (propn ...

   Science Journal Paper : CCAMLR Science, Volume 6 (CCAMLR Science, Volume 6) : 37–46 : Autor(es): Everson, I. and A.W. Murray

3. e-cc-xiv-a5.pdf

   ... Measures 69/XII and 80/XIII by fishing for Dissostichus eleginoides out of season in Subarea 48.3. The ... was suspended from its activities for the infringement of Conservation Measure 80/XIII. The sentence ... Observer and a report for the Commission is provided in CCAMLR-XIV/BG/20. 2.3 SCOI noted that a general ... amendment to the CCAMLR Convention and may also create an undesirable precedent for other international application/pdf attached to:SCOI-95

   Meeting Report : SCOI-95

4. e-sc-vii-a8.pdf

   ... with two papers to aid its discussions: ‘Research Programs of CCAMLR Members for 1988/89, 1989/90 and ... -Term Program of Work for the Scientific Committee’. A review of the research programs report by ... possible, for the next three years. The format to be used should be the same as the one agreed at the ... season but also activities anticipated for future seasons (e.g. 2–5 years). LONG-TERM INFORMATION application/pdf attached to:WG-LTP-88

   Meeting Report : WG-LTP-88

5. Krill biomass in Area 48 and Area 58: recalculations of FIBEX data

   estimates of mean density and biomass for the Indian Ocean sector and the West Atlantic sector as well as ... for FAO Statistical Area 41, and CCAMLR Subareas 48.1, 48.2, 48.3, 48.6 and Division 58.4.2. Density ... workshop. Estimates for the different areas were also calculated using the target strength relationships of ... Green et al. (1990). The new estimates were on average 4.76 times larger than the old estimates for ... densities reported in Anon. (1986) were derived using a TS value of -68.10 dB for a mean animal length of ... - equation 3) to provide an estimate for transect density (Pk). The mean density by stratum (PA) weighted by ... laill for an interval (set either on the basis of time or on distance steamed) of ship's track was ... surveys may also have been taken at different times of the season, but for some years it may be ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/9 (Selected Scientific Papers, SC-CAMLR-SSP/9) : 157–181 : Autor(es): Trathan, P.N., D.J. Agnew, D.G.M. Miller, J.L. Watkins, I. Everson, M.R. Thorley, E. Murphy, A.W.A. Murray and C. Goss

6. e-sc-xxxv-a05.pdf

   ... Methods for assessing stocks in established fisheries .................................... 152 Review of ... Selection of local biomass estimates for use in setting catch limits ................. 159 Review of ... ........................................ 167 Review of scientific research proposals for other areas (e.g. closed areas, areas with zero ... -16/36 Rev. 1 described recent developments towards an integrated stock assessment for krill in application/pdf attached to:WG-SAM-16

   Meeting Report : WG-SAM-16

7. Fishery Report 2017: Dissostichus eleginoides South Georgia (Subarea 48.3)

   in Appendix 1). 20. The stock of D. eleginoides in Subarea 48.3 was assessed using an age ... virgin biomass for 35 years based on a constant catch of 2 600 tonnes per year. Confidence intervals at ... provide an index of recruitment for stock assessments. 14. Dissostichus eleginoides were caught in 21 ... factors, length frequencies, weights and maturity. Toothfish otoliths are collected by observers for an ...

   Document : Site Section: Publications

8. Assessments of by-catch in trawl fisheries at Heard and McDonald Islands

   / Description:  This paper assesses the potential for the commercial trawl fisheries in the Heard Island area ... skates). The long-term annual yield for each of the three taxa was estimated using the generalised yield ... from the local area. Where possible, values for missing input parameters were obtained from the ... literature, for the same species from other areas, otherwise proximate data for similar species elsewhere in ... 0 20 0.2 for C. rhinoceratus WG-FSATWG-FSA-97/30). L. squainifrons 1 25 11 360 0.1 ... than 0.1 over a 20-year period. The lowest y satisfying these rules was determined for the three ... length at which the fish are fully represented in the sample (considered - to be Estimates of age for ... old. The maximum age is uncertain because it is currently based on an estimate from one fish. Also ...

   Science Journal Paper : CCAMLR Science, Volume 5 (CCAMLR Science, Volume 5) : 231–243 : Autor(es): Constable, A.J., R. Williams and W.K. de la Mare

9. Cephalopods: Trophic modelling of the Ross Sea

   years. These values allow us to estimate a weight-at-age for this species of cephalopod, and hence a ... 13–30% of wet weight and a value for ash proportion of 0.9–2.4% of wet weight equivalent to c. 7.7 ... of size at age for Psychroteuthis glacialis. First, we consider the smallest samples of this species ... to reach this size is not known for Psychroteuthis glacialis and here we use an estimate of 1.5 ...

   Document : Site Section: Publications

10. e-sc-xiii-a7.pdf

    ... years. 3.21 Protocols for the collection and submission of CEMP data have been set up and predator ... place and time. 4.10 The Data Manager reminded the meeting that for the last few years the ... addressed. Unfortunately, although there are sufficient years (up to 20) of predator data to contribute to ... subjective assessments for predators and an inability reliably to make even subjective assessments for all application/pdf attached to:WG-KRILL/CEMP-94

    Meeting Report : WG-KRILL/CEMP-94

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