Résultats de la recherche

1. Peculiarities of icefish Champsocephalus gunnari (Channichthyidae) distribution in South Georgia area during the surveys made by STM Atlantida in 2000 and 2002

   numbers in pelagic zone. At present, the population mainly consists of immature and first maturing fish ... Abstract:  Reasons of differences in icefish distribution and biomass assessment during two ... surveys made by STM “Atlantida” are revealed. Availability of large icefish concentrations in 2000 in the ... northwest shelf area in 10-100m layer resulted in formation of adult fish aggregations in water column. The ...

   Meeting Document : WG-FSA-03/55 : Auteur(s): Zh.A. Frolkina, S.M. Kasatkina and N.N. Zhigalova (Russia)

2. Advances are urgently needed in providing regular estimates of krill stock status based on the available data

   measure (the trigger level) which was established in 1991 and is “not related to the status of the krill ... stock”. At the same time, CCAMLR recognises that “advances are urgently needed” specifically because the ... trigger level is not related to the status of the stock. The establishing terms of reference for WG-EMM ... include requests to “assess the status of krill” and “develop management advice … for management of krill ...

   Meeting Document : WG-EMM-2019/28 : Auteur(s): S. Hill, J. Hinke, N. Ratcliffe, P. Trathan and G. Watters

3. Progress towards an assessment of Antarctic toothfish (Dissostichus mawsoni) in Subarea 88.2 SSRUs 882C–H for the years 2002–03 to 2015–16 using a two-area model

   (SSRUs 88.2C–G) comprising a mix of large mature fish and small immature fish. Two-area stock assessment ... collect mark-recapture data in the South to help inform the estimation of biomass in the South. We present ... an update on these two-area stock models, which include two years of new data collected under a ... research plan. The assessment models were fit to the proportions-at-age in the catch and the mark-recapture ...

   Meeting Document : WG-FSA-16/44 : Auteur(s): S. Mormede, K. Large and S. Hanchet

4. Line weights of constant mass (and sink rates) for Spanish-rig Patagonian toothfish longline vessels

   kg weights at 40 m intervals on longlines to minimise interactions with seabirds. The weights are ... collections of rocks enclosed in netting bags. The netting bags abrade on the seabed, rocks are lost and ... use of torpedo-shaped steel weights. Steel weights are smaller, lighter for equivalent mass, more ... chartered Spanish-rig longline vessel to determine the statistical relationship in sink rates of longlines ...

   Meeting Document : WG-FSA-07/15 : Auteur(s): G. Robertson (Australia), C.A. Moreno, E. Gutiérrez (Chile), S.G. Candy (Australia), E.F. Melvin (USA) and J.P. Seco Pon (Argentina)

5. An update on the ageing of Antarctic toothfish, Dissostichus mawsoni, from East Antarctica and the Amundsen Sea

   , experienced readers at the Australian Antarctic Division (AAD) read a subset of 40 otoliths from the New ... Abstract:  This paper presents an update on the ageing of Antarctic toothfish, Dissostichus ... against the New Zealand reference ages showing a high level of precision (all IAPE < 5%, CV < 7 ... %). Sister pairs of Antarctic toothfish otoliths were also prepared, one using the ‘bake and embed’ method ...

   Meeting Document : WG-FSA-17/15 : Auteur(s): G. Nowara, B. Farmer, T. Barnes, P. Ziegler and D. Welsford

6. A characterisation of the toothfish fishery in Subareas 88.1 and 88.2 from 1997–98 to 2010–11

   location of fishing together with the catch of Dissostichus spp. and bycatch species by year for the period ... 1997–98 to 2010–11. During the 2010–11 fishing year most of the catch in Subarea 88.1 came from the ... slope SSRUs 88.1H and 88.1I, and SSRU 88.1K. About 63% of the catch limit in the north was taken from ... . Most catch from Subarea 88.2 was taken from SSRU 88.2E but over 100 t was taken from each of SSRU 88.2D ...

   Meeting Document : WG-FSA-11/45 : Auteur(s): M.L. Stevenson, S.M. Hanchet, S. Mormede and A. Dunn (New Zealand)

7. A CHARACTERISATION OF THE TOOTHFISH FISHERY IN SUBAREAS 88.1 AND 88.2 FROM 1997–98 TO 2007–08

   of data collected on toothfish and the associated bycatch by all vessels participating in the fishery ... catch was the fourth highest on record with a total of 2666 t against a combined catch limit of 3207 t ... . The management of the SSRUs within the two subareas was changed for the 2006 season as part of a 3 ... -year experiment (SC-CAMLR-XXIV). One of the aims of the experiment was to simplify the administration ...

   Meeting Document : WG-FSA-08/22 : Auteur(s): M.L. Stevenson, S.M. Hanchet and A. Dunn (New Zealand)

8. Assessment models for Patagonian toothfish in research block 5843a_1 of Division 58.4.3a, Elan Bank

   Abstract:  I made two sensitive runs of CASAL catch at length models (LENGTH_MODEL) for stock ... status assessments of Dissostichus eleginoides in research block 5843a_1 in Division 58.4.3a for the ... comprised of two fisheries split by depths of 1 200 m as the model in WG-SAM-14/17.  Number of longlines was ... between the two models were set as follows: year class strength (YCS) was fixed; parameters of ALK were ...

   Meeting Document : WG-FSA-14/22 : Auteur(s): K. Taki (Japan)

9. An updated spatially explicit population dynamics operating model for Antarctic toothfish in the habitable depths of the Ross Sea region

   population was restricted to those cells in which at least 5% of cell area was of a depth deemed suitable as ... that a proportion of the mature fish spawn each year. The model estimation of the maturity ogive is now ... similar to that estimated by histological analysis. This model represents our current best model of the ... spatial distribution and movement of Antarctic toothfish in the Ross Sea region given the movement ...

   Meeting Document : WG-SAM-14/31 : Auteur(s): S. Mormede, A. Dunn, S. Parker and S. Hanchet (New Zealand)

10. Spawning pattern and type of fecundity in notothenioids collected around the Elephant and South Orkney Islands

    counting were carried out using an image analyzer in sub-samples of ovaries at different stages of ... Abstract:  The frequency distribution of oocytes diameter and relative fecundity (FR) of 4 ... development, while the determination of RF was performed by a gravimetric method. Five were the main ... distinctive finding derived from this study: (i) in mature ovaries of all species immature oocytes or pre ...

    Meeting Document : WG-FSA-16/22 : Auteur(s): G. Plaza, P.M. Arana, F. Becker, A. Zavatteri and V.H. Castillo

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