Résultats de la recherche

1. 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 : Auteur(s): P. Burch, P. Ziegler, W. de la Mare and D. Welsford (Australia)

2. 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 : Auteur(s): M.A. Collins, R. Mitchell, G. Tarling and M. Belchier (United Kingdom)

3. 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 : Auteur(s): H. Steen

4. 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 : Auteur(s): V.V. Lidvanov, A.V. Zimin, K.E. Shulgovsky (Russia)

5. 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 : Auteur(s): D.J. Agnew, K. Kerkieta, L. Heaps, C. Jones, J. Pearce and A. Watson (United Kingdom)

6. 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 : Auteur(s): V.V. Akishin, I.G. Istomin, V.A. Tatarnikov, A.F. Petrov and R.O. Lebedev (Russia)

7. Target strengths of krill at 136 and 20 kHz

   and using trawling-acoustic method. Ensonification of encaged live krill. For aggregations with mean ... 136 kHz. For aggregations with mean lengths in the range (43,47)mm the mean single-krill target ... strengths are in the range (-71,-77) dB at 20 kHz. Trawling-acoustic method. For aggregations with mean ... obtained. At the same frequency for aggregations with mean lengths in the range (41,47) mm the mean single ...

   Meeting Document : WG-KRILL-91/29 : Auteur(s): S.M. Kasatkina (USSR)

8. The effect of temporal variability on power analysis predictions for Adélie penguin CEMP parameters at Béchervaise Island

   another and it has major ramifications on power estimates. Increasing the variability associated with ... results based on occupied nest counts with increasing levels of temporal variability (% CV) are applicable ... (5.2 – 6.7%). For example, with a 10 year monitoring program it is possible to detect fixed increases ... or decreases larger than 2% each year with more than 80% power. Increasing the duration of the ...

   Meeting Document : WG-EMM-03/49 : Auteur(s): L.M. Emmerson and C. Southwell (Australia)

9. Progress report on the Korean exploratory longline fishery for Dissostichus spp. in Divisions 58.4.1 and 58.4.2 in 2016/17 season

   various scientific researches. The total catch of D. mawsoni was 153,084 kg with 4,360 individuals. The ... 58.4.2, tagging rate with tag overlap statistics of D. mawsoni were 5.22 with 88% and 5.51 with 74 ... ) were used along with protective frames that would prevent the CTD connector from being damaged. Water ...

   Meeting Document : WG-SAM-17/27 : Auteur(s): S.-G. Choi, J. Lee, J. Lee and D. An

10. Design of the used on Russian vessels Sparta and Chio Maru No. 3 bottom trot-line for toothfish fishing

    Abstract:  This work is prepared in accordance with recommendation of 4.18 WG-SAM-12 about ... lines with hooks and weight. This design allows avoiding fish injuries outside the mouth cavity and ... catching of VME-organisms to a large extent, because at the presented design of a longline each line with a ... weight (“barandija”) has bunch of 5-10 snoods with hooks and length of a snood is 30-40 cm or sometimes ...

    Meeting Document : WG-FSA-12/22 : Auteur(s): I.G. Istomin, V.V. Akishin, V.A. Tatarnikov and I.I. Gordeev (Russia)

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