Résultats de la recherche

1. A characterisation of the toothfish fishery in Subareas 88.1 and 88.2 from 1997–98 to 2013–14

   of the fishery – the reason for this is unclear. There has been a slight reduction in mean age in ... biological aspects and catch of Antarctic toothfish up to an including the 2014 season. In 2014, the Ross Sea ... strong mode of smaller (90–120 cm TL) toothfish present in the Slope fishery from 2010–2013 was not ... recommended that additional otolith readings for this area are given a high priority. There was a marked ...

   Meeting Document : WG-FSA-14/52 : Auteur(s): M. Stevenson, S. Hanchet, S. Mormede and A. Dunn (New Zealand)

2. Fishing and conservation in southern waters

   . The former Soviet Union has been the most important fishing nation, taking 80-90 % of the entire catch ... . The krill catch from the Southern Ocean has been 4.9 million tonnes to date. More than 90 % of this ... catch originated from the Atlantic sector. 50- 90 % is taken from the foraging range of land-based ... potential for direct competition between krill fisheries and krill-dependent predators. Potential impacts of ...

   Meeting Document : SC-CAMLR-XII/BG/11 : Auteur(s): Delegation of Germany

3. 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

   Abstract:  Fish samples collected through an overall period of 24 years at Potter Cove after the ... 1986/7 and the duration of the inshore phase of the species, which is known to last for 6-7 years. In ... impact of the fishery in the area in 1978-80, allowed the comparison of the variations in mean annual ... reported for the period 1983- 1991/2 is consistent with the increase in mean size observed between 1983 and ...

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

4. A preliminary assessment and revised growth model of mackerel icefish (Champsocephalus gunnari) in Division 58.5.2, based on results from the 2017 random stratified trawl survey

   growth model based on recent cohort progressions indicated an increase in size-at-age compared to the ... vicinity of Heard Island and the McDonald Islands during April 2017. This paper provides an updated growth ... model and a preliminary assessment for mackerel icefish (Champsocephalus gunnari) population structure ... , abundance and yield in Division 58.5.2 to the west of 79 o 20’ E using standard CCAMLR methods (CMIX and ...

   Meeting Document : WG-FSA-17/22 : Auteur(s): D. Maschette, P. Burch, P. Yates and D. Welsford

5. Distribution, morphology, growth, reproduction, diet and trophic position of two species of grenadier (Macrourus whitsoni and M. caml) in the Ross Sea region of the Southern Ocean (CCAMLR Subareas 88.1 and 88.2)

   least 27 years; in M. caml, full size is attained at about 15–20 years of age and they can live in ... age than in female M. caml (length at maturity 52/46 cm TL; age at maturity 16/13 y for M. whitsoni ... samples led to an estimated trophic level of 4.4 for M. caml and 4.1–4.2 for M. whitsoni. Author(s):  M.H ... different growth rates; M. whitsoni approaches full size at about 10–15 years of age and can live to at ...

   Meeting Document : WG-FSA-12/54 Rev. 1 : Auteur(s): M.H. Pinkerton, P. McMillan, J. Forman, P. Marriott, P. Horn, S. Bury and J. Brown (New Zealand)

6. TARGET STRENGTH STUDIES ON ANTARCTIC SILVERFISH (PLEURAGRAMMA ANTARCTICUM) IN THE ROSS SEA

   Antarctic Silverfish, ranging in length from 90 to 210 mm, by means of an underwater framework with a ... study may influence the result. For example, some authors suggested that freezing the fish reduce the ... over-all backscatter of 30% (Sun et al. 1985), others that TS measurements on living fish ex situ would ... place (Ona, 1990), making comparisons difficult. For those reasons theoretical models have been thought ...

   Meeting Document : SG-ASAM-09/10 : Auteur(s): M. Azzali, I. Leonori, I. Biagiotti, A. De Felice, M. Angiolillo, M. Bottaro and M. Vacchi (Italy)

7. Size variations associated with abundance changes in juvenile Notothenia rossii observed at Potter Cove, South Shetland Islands, since the end of the fishery in the area

   design to obtain variance components and expected values. An increase and then a decrease in the expected ... interpreted as a consequence of a significant reduction in the influx of the youngest age classes into inshore ... strongly associated with the last significant catches of fin-fish in the Subarea 48.1 in 1979/80 and could ... . gibberifrons relative to N. neglecta indicate low levels, similar to those already reported for the last three ...

   Meeting Document : WG-FSA-91/13 : Auteur(s): E. Marschoff and E. Barrera-Oro (Argentina)

8. Tendencias de la biomasa de Dissostichus eleginoides (Smitt, 1898) en la Subarea 48.3 (1992–1997)

   the catch at age data. The model was tunned by the standarized CPUE. For this last process GLlM was ... actually (1997) very close to the 20% of the initial (1992) spawning biomass. An aproximation of the future ... used and for the aplication of SPA the non-lineal function of Solver in Excel was used. The results ... split years 1992 to 1997, was estimated using the Sequential Population Analysis (SPA) model based in ...

   Meeting Document : WG-FSA-97/43 : Auteur(s): Moreno, C.A., Rubilar, P.S., Zuleta, A., Young, Z.

9. Preliminary assessment of mackerel icefish (Champsocephalus gunnari) in the vicinity of Heard Island and McDonald Islands (Division 58.5.2), based on a survey in March–April 2010, including a revised growth model

   58.5.2 in the vicinity of Heard Island in March-April 2010 to provide the information for an assessment ... assessment of yield for the area of Division 58.5.2 to the west of 79°20’ E using standard CCAMLR methods ... . The strong year class detected in the last three years’ surveys is now fully recruited as the 4 ... focus on this cohort. A new growth model is also estimated which shows an improved fit to observed sizes ...

   Meeting Document : WG-FSA-10/12 : Auteur(s): D.C. Welsford (Australia)

10. Cetaceans as indicators of historical and current changes in the East Antarctica ecosystem

    approximately 1940 and 1970. A low age at sexual maturity favored an increase in the recruitment rate and total ... Antarctic minke whales could have decreased in recent years. Decrease in availability of krill for this ... middle of the past century and the recovery of krill-eater large whales since the 1980’s. There was an ... whale, which had not been exploited on a large scale. A review of the scientific information in East ...

    Meeting Document : WG-EMM-16/64 : Auteur(s): Y. Fujise and L.A. Pastene

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