Résultats de la recherche

1. Southern right whale (Eubalaena australis) reproductive success is influenced by krill (Euphausia superba) density and climate

   correlations were found with krill densities (r = 0.69, p = 0.002, lag 0 years), Oceanic Niño Index (r = −0.65 ... ) availability for the species. Therefore, increased frequency of years with reduced krill abundance, due to ... number of calves recorded each year varied from 7 to 43 (x = 21.11 ± 11.88). Using cross-correlation ... , p = 0.03, lag 6 years), Antarctic Oscillation (r = 0.76, p = 0.01, lag 7 years) and Antarctic sea ...

   Meeting Document : WG-EMM-16/P06 : Auteur(s): E. Seyboth, K.R. Groch, L. Dalla Rosa, K. Reid, P.A.C. Flores and E.R. Secchi

2. Stock assessment of D. eleginoides in Subarea 48.3 using dynamic production models

   in recent years. The trends in biomass dynamic estimated by DPM are very similar with trends from ... mortality, age selectivity, recruitment estimates, mean weight at age) In the calculations with DPM (with ... Schaefer and Fox production functions) were used: total yield for a series of years and abundance index ... estimates by years of fishing. Both models showed that the D. eleginoides stock status at the initial period ...

   Meeting Document : WG-FSA-02/78 : Auteur(s): P.S. Gasiukov and R.S. Dorovskich (Russia)

3. Skate tagging in the Heard Island and McDonald Island (Division 58.5.2) toothfish fishery up to 2013

   biology of these species. In the 13 years, over 12,000 skates have been tagged, with 112 recaptures, a ... in all directions. Most recaptures occurred within the first three years, with the maximum time at ... from release to recapture, with B. irrasa tending to move in depth more than the other two species ... . Growth increments for tagged and recaptured B. eatonii indicated growth of ~20mm/year for both sexes ...

   Meeting Document : WG-FSA-13/22 : Auteur(s): G.B. Nowara, T.D. Lamb and D.C. Welsford (Australia)

4. Variability of krill fishery operations in Subarea 48.2 in relation to fishing methods: spatial–temporal distribution of CPUE and of fishing efforts

   fishing methods. It was shown how fishery operated by years and month in each SSMUs with special attention ... in Subarea 48.2 with special attention to the period 2006-2011 which is characterized by the highest ... 2006-2011 is not associated with the changes in fishing methods and the trend in long-term fishery in ... performance requires knowledge of krill distribution in the fishing grounds with special attention to krill ...

   Meeting Document : WG-EMM-14/22 : Auteur(s): S. Kasatkina (Russia)

5. An integrated stock assessment for the Patagonian toothfish (Dissostichus eleginoides) in Division 58.5.2 using CASAL

   late (within-year) season compared to the combined early (within-year) seasons for the main trawl ... year class strength parameters, (iii) separate selectivity parameters used for the pre-2006 compared to ... -at-length data. The estimated long-term yield was 2500 tonnes with depletion probability of 0.081 and ... concluded that until the difficulties with the use of mark-recapture data are resolved, recruitment surveys ...

   Meeting Document : WG-FSA-07/53 Rev. 1 : Auteur(s): S.G. Candy and A.J. Constable (Australia)

6. Antarctic ecosystem management

   in accordance with the objectives and requirements of Article II of the Convention for the ... . With regard to interim management action, it is recommended that (a) management areas should be ... be employed to monitor these stocks. In particular, early attempts should be made to model fishing ...

   Meeting Document : WG-DCH-84/03 : Auteur(s): D.S. Butterworth (South Africa)

7. Improving mechanistic understanding between larval krill, krill recruitment, and sea ice

   paper is to provide the Working Group with a summary of our recent efforts published last year to ... . Earlier analysis suggested decrease in krill abundance by 50% since the mid 1970’s to early 2000’s in the ... trajectory as well as its link with decadal climatic events. Krill population dynamics is thought to be ...

   Meeting Document : WG-EMM-18/07 : Auteur(s): B. Meyer and S. Kawaguchi

8. The food and feeding of five species of icefish in the Elephant Island – South Shetland Islands Region in March 2003

   – South Shetland Islands region in March-early April 2003. C. gunnari took primarily krill. C. aceratus ... fed on krill and fish with some differences found between Elephant Island and the South Shetland ...

   Meeting Document : WG-FSA-03/60 : Auteur(s): K.-H. Kock, H. Flores (Germany), C.D. Jones (USA), S. Wilhelms and S. Schöling (Germany)

9. A preliminary assessment of age and growth of eel cod (Muraenolepis sp.) and violet cod (Antimora rostrata) in the Ross Sea, Antarctica

   ., 42.8 cm TL; K, 0.408 y-1; t0,-0.1 years. Violet cod are relatively long-lived, with a maximum estimated ... depth range, so probably comprise a single species. They are relatively short-lived, with a maximum ... estimated age of 9.5 years. Von Bertalanffy parameters derived from female and unsexed fish only are: L ... age of 41.5 years. Von Bertalanffy parameters derived from female and unsexed fish only are: L., 78.4 ...

   Meeting Document : WG-FSA-10/19 : Auteur(s): P.L. Horn and C.P. Sutton (New Zealand)

10. Integrated stock assessment for the Heard Island and the McDonald Islands Patagonian toothfish (Dissostichus eleginoides) fishery (Division 58.5.2)

    consistent and did not show an early period with stronger inter-annual fluctuation. Based on this assessment ... eleginoides) at the Heard and the McDonald Islands (Division 58.5.2) with data until the start of August 2013 ... of a range of alternative fishery structures and model assumptions for year class strength (YCS) on ... . Across scenarios with YCS estimation, estimates of virgin spawning biomass (B 0) ranged from 89 448- 101 ...

    Meeting Document : WG-FSA-13/24 : Auteur(s): P. Ziegler, S. Candy and D. Welsford (Australia)

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