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1. Does the current South Georgia groundfish survey accurately estimate the standing stock of mackerel icefish?

   the icefish biomass is in midwater and therefore missed by the bottom trawl survey. In January 2004, a ... short acoustic survey on FPRV Dorada showed that mackerel icefish, of all age classes, spend time in ... acoustic survey has the potential to give a better estimate of icefish biomass, however acoustic methods ... :  Does the current South Georgia groundfish survey accurately estimate the standing stock of mackerel ...

   Meeting Document : WG-FSA-SAM-04/20 : Autor(es): Agnew, D., Goss, C., Xavier, J., Belchier, M., Collins, M., Reid, K.

2. The diet of Antarctic fur seals Arctocephalus gazella during the breeding season at Heard Island

   and skate (Bathyraja sp.), the latter being found in over 60%-of scats in October and November. The ... . There the increase is thought to be due to the high availability of krill E. superba, but, in the ... Heard Island fed mainly on fish with an average 95.2% of scats in monthly collections containing fish ... remains. Pelagic myctophids constituted more than 50% of fish taken by fur seals at the beginning of the ...

   Meeting Document : SC-CAMLR-VIII/BG/53 : Autor(es): Delegation of Australia

3. Trophic relations of the cephalopod Martialia hyadesi (Teuthoidea: Ommastrephidae) at the Antarctic Polar Front, Scotia Sea

   Sea in February 1989. The dissected stomachs of 61 specimens were classified according to fullness and ... squid mantle length. Over the size range of squid in the sample there was no relationship between size ... preference was related to squid size. The prevalence of copepod-feeding myctophids in the diet of this squid ... , which is itself a major prey item of some higher predators In the Scotia Sea, suggests that a previously ...

   Meeting Document : SC-CAMLR-XI/BG/11 : Autor(es): Delegation of United Kingdom

4. An assessment strategy evaluation framework for testing the application of a CASAL based management system to the HIMI fishery

   technical details and decisions made in the formulation of this framework are included in this paper ... Abstract:  A useful way of testing assessment methodology and related decisions is through the ... framework of management strategy evaluation and the simpler form of assessment strategy evaluation. Such a ... framework uses an operating model of the system to generate data against which the assessment model, or the ...

   Meeting Document : WG-SAM-07/13 : Autor(es): I.R. Ball and S.G. Candy (Australia)

5. Estimation of natural mortality for the Patagonian toothfish at Heard and McDonald Islands using catch-at-age and aged mark-recapture data from the main trawl ground

   to 2008. A large proportion of the recaptures of fish released in this fishery were aged and these ... of M have been studied using simulation. In application to the data obtained for the HIMI main trawl ... 0.055 to 0.250 (based on a Poisson over-dispersion estimate of 3). In contrast, the BODE model gave ... Paper Title:  Estimation of natural mortality for the Patagonian toothfish at Heard and McDonald ... mean estimate of M of around 0.15. If the selectivity in Ground B is similar to that simu- lated by ... (D. mawsoni) in the Ross Sea (Subarea 88.1) (Dunn and Hanchet, 2007) apply a fixed value of M of ... M of 0.13 y–1 in Hillary et al. (2006) was based on Beverton-Holt invariants. The estimate of M ... -dispersion estimate of 3). In contrast, the BODE model gave unrealistic estimates of M and the annual ...

   Science Journal Paper : CCAMLR Science, Volume 18 (CCAMLR Science, Volume 18) : 29–45 : Autor(es): Candy, S.G., D.C. Welsford, T. Lamb, J.J. Verdouw and J.J. Hutchins

6. The factors causing impact on the toothfish catch estimation on board of fishing vessels

   fishing catches in operational statistical reports. The document analyzes the significance of all the ... Abstract:  The toothfish catch estimation on board of fishing vessels at the CCAMLR area is being ... done often in a difficult weather conditions at sea, which can cause a negative impact on the ... measurement equipment. Besides, until today the “green weight” of the toothfish catch on fishing vessels was ...

   Meeting Document : WG-SAM-2019/14 : Autor(es): K. Demianenko, P. Zabroda, I. Slypko, L. Pshenichnov, A. Bazhan, O. Diripasko and D. Marichev

7. The survivorship of rays discarded from the South Georgia longline fishery

   throughout the months of May and June, during 2003 toothfish fishing season in Subarea 48.3. From these ... results we can conclude that depth has a significant influence on the mortality of skate, with a predicted ... mortality of 0% for skate caught in waters of less than 1100m. A predicted mortality of 65% for skate caught ... in waters between, 1400 to 1600m and a mortality of 100% for skate caught at 2000m. We recommend from ...

   Meeting Document : WG-FSA-03/57 : Autor(es): M. Endicott and D.J. Agnew (United Kingdom)

8. Status of the Polish FIBEX acoustic data from the west Atlantic

   Abstract:  Acoustic data from the Polish FIBEX survey in the West Atlantic were examined to check ... the consistency of krill abundance estimates against the results of the other FIBEX survey vessels ... . The results indicated that there was a high level of consistency between the results from the Polish ... vessel and those from the other vessels that operated in the Peninsula region and in the West Atlantic ...

   Meeting Document : WG-EMM-98/30 : Autor(es): P.N. Trathan (UK), J. Kalinowski (Italy) and I. Everson (UK)

9. The early life history of the Patagonian toothfish Dissostichus eleginoides Smitt, 1898

   July to September. Eggs have been observed primarily in the upper part of the water column over 2200 ... -4400 m bottom depth. Embryos in stage III and IV of their embryonic development are described. Hatching ... is likely to occur in October/November. Scales do not start to form before the fish are 64-74 mm long ... life history of the Patagonian toothfish Dissostichus eleginoides Smitt, 1898 Approval:  Approved ...

   Meeting Document : WG-FSA-94/14 : Autor(es): S.A. Evseenko (Russia), K.-H. Kock (Germany) and M.M. Nevinsky (Russia)

10. Results of a scientific electronic monitoring pilot study on the FV Janas during the 2017/18 Ross Sea fishing season

    assist in improving the accuracy of data recording by observers, as well as allowing observers more time ... Abstract:  During the 2017/2018 toothfish season in the Ross Sea, the New Zealand flagged Janas ... trialled a scientific electronic monitoring system during fishing operations in the Ross Sea region. The ... fishing activities. The trial showed that 1) the systems performed well in Antarctic conditions, 2) video ...

    Meeting Document : WG-SAM-18/20 : Autor(es): B. Plum, A. Smith and S. Parker

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