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1. Long-term changes in the size composition of fjord Notothenia rossii, Gobionotothen gibberifrons and Notothenia coriiceps at Potter Cove, after the 1978–1980 fishery in the area

   lengths and density distributions of the commercially exploited species N. rossi and G. gibberrifrons with ... reported for the period 1983- 1991/2 is consistent with the increase in mean size observed between 1983 and ... the following years, until 1991/92, the decreasing abundance is consistent with the entrance of low ... strength cohorts with the consequent reduction in mean size. The above interpretation is supported by the ...

   Meeting Document : WG-FSA-07/52 : Autor(es): E.R. Marschoff, E.R. Barrera-Oro and N.S. Alescio (Argentina)

2. Physical forcing in the southwest Atlantic: ecosystem control

   temperature at South Georgia shows the presence of high levels of autocorrelation, with periodicity evident in ... temperature anomalies at lag periods of approximately 3 to 4 years. Crosscorrelation analyses with temperature ... temperature fluctuations in the Pacific, with the Pacific leading South Georgia by approximately 3 years ... as well as in data from fish and Antarctic krill. Increased krill biomass appears to coincide with ...

   Meeting Document : WG-EMM-04/34 : Autor(es): P.N. Trathan, E.J. Murphy, J. Forcada, J.P. Croxall, K. Reid and S.E. Thorpe (United Kingdom)

3. On the possibility of practical utilisation of krill target strength TS in situ obtained on the basis of EK-500 measurements

   Abstract:  Comparative analysis of krill length distribution in the echosurvey area, obtained with ... situ at the frequency of 120 kHz as measured with echosounder EK-500 (split-beam) principle). Krill was ... caught with the commercial trawl RT 741448. It was shown that differences between krill length ... considerable (statistically significant). Besides, krill length estimates, obtained with acoustic method, were ...

   Meeting Document : WG-EMM-98/19 : Autor(es): S.M. Kasatkina (Russia)

4. PRELIMINARY RESULTS OF TRIALS TESTING MODIFIED LONGLINE GEAR ‘TROTLINES’ IN PRESENCE OF CETACEANS IN SUBAREA 48.3

   composition on Spanish system longlines with those on ‘trotlines’ fitted with cetacean exclusion devices ... cetaceans were present. This difference increased with increasing abundance of cetaceans highlighting the ... trotlines fitted with cachalotera nets were dead or suffered life-threatening injuries. Toothfish were also ... trotline use. iii. Potential increases in skate and toothfish injury, leading to problems with skate ...

   Meeting Document : WG-FSA-08/44 : Autor(es): R.E. Mitchell, J. Clark, P. Reyes, L. Jones, J. Pearce, C.E. Edwards and D. Agnew (UK)

5. Investigating the uncertainty of age determinations for Patagonian toothfish (Dissostichus eleginoides) and the implications for stock assessment

   aggregate into the plus group, negative errors are truncated below the minimum age, and fish with true ages ... expanded the reference collection to include an additional 50 otoliths with a mean age above 25 years. The ... matrix.We assessed misclassification matrices obtained using the revised Candy method along with two other ... of variation (c.v.) of 0.1. We compared the misclassification matrices with the observed age ...

   Meeting Document : WG-FSA-14/46 : Autor(es): P. Burch, P. Ziegler, W. de la Mare and D. Welsford (Australia)

6. Patterns in the diet of mackerel icefish (Champsocephalus gunnari) on the South Georgia and Shag Rocks shelf (CCAMLR Subarea 48.3)

   consistent with previous studies, with the dominant species consumed being Antarctic krill (Euphausia superba ... icefish examined (2+, 3+ and 4++), with the younger fish consuming more T. gaudichaudi and small ... larger prey items with size. Author(s):  M.A. Collins, R. Mitchell, G. Tarling and M. Belchier (United ...

   Meeting Document : WG-FSA-04/44 : Autor(es): M.A. Collins, R. Mitchell, G. Tarling and M. Belchier (United Kingdom)

7. Norwegian Cruise to Kong Håkons VII Hav 28 February – 10 April 2019

   April 2019. Our focus area was the ocean south of 65°S east of 0° meridian and 13.5° E (Fig 1) with a ... contained in addition to the ROV transect, benthic sampling with appropriate gear, fish and krill trawling ... , long line and 3-4 CDT station with extensive water sampling for primary production and water chemistry ... extensive algae bloom in the deep trench separating Astrid ridge and Maud rise. Associated with the algae ...

   Meeting Document : WG-EMM-2019/48 : Autor(es): H. Steen

8. Biotopic and spatial distribution of krill Euphausia superba Dana (Crustacea, Euphausiacea) length groupings in the Atlantic sector of Antarctic in summer 1984 and 1988

   Abstract:  Three basic length groupings of krill were identified with the clustering analysis on ... in summer 1984 and 1988. The large-length grouping is biotopically associated with the waters of the ... grouping are associated with the Weddell Sea waters. Besides, the additional fourth grouping with bimodal ... complied with the climatic norm and seemed to stipulate the typical pattern of krill spatial distribution ...

   Meeting Document : WG-EMM-04/27 : Autor(es): V.V. Lidvanov, A.V. Zimin, K.E. Shulgovsky (Russia)

9. Depth distribution and spawning pattern of Dissostichus eleginoides over the winter period in Subarea 48.3

   statistically significant pattern of changing mean length at depth with month was found in both 1997 and 1998 ... seasons, suggesting movement of animals both up and down slope at particular times of year. Months with a ... high mean length at depth are May and August, and with a low mean length at depth are April and July ... with movement of animals to preferred spawning depths. A general model would be that toothfish form ...

   Meeting Document : WG-FSA-98/58 : Autor(es): D.J. Agnew, K. Kerkieta, L. Heaps, C. Jones, J. Pearce and A. Watson (United Kingdom)

10. Method for collecting of data on traumatic death of krill passed through the trawl meshes

    with threads of the net bag some of them may receive possibly lethal mechanical damage. Proposed method ... bag, only for fishing with hauling of full net for catch extraction. The analogous rating for fishing ... with fishpump needs developing of special methods of source material obtaining to set experiments. But ... . Picking of krill individuals, passed through meshes of net bag cover of fishing gear was carried out with ...

    Meeting Document : WG-EMM-12/43 : Autor(es): V.V. Akishin, I.G. Istomin, V.A. Tatarnikov, A.F. Petrov and R.O. Lebedev (Russia)

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