Resultados de la búsqueda
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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 : Autor(es): G. Nowara, B. Farmer, T. Barnes, P. Ziegler and D. Welsford
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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 : Autor(es): M.L. Stevenson, S.M. Hanchet, S. Mormede and A. Dunn (New Zealand)
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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 : Autor(es): M.L. Stevenson, S.M. Hanchet and A. Dunn (New Zealand)
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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 : Autor(es): K. Taki (Japan)
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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 : Autor(es): S. Mormede, A. Dunn, S. Parker and S. Hanchet (New Zealand)
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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 : Autor(es): G. Plaza, P.M. Arana, F. Becker, A. Zavatteri and V.H. Castillo
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An approach to feedback management (FBM) of the krill fishery based on routine acoustic data collection and intermittent land-based predator studies
specific scientific studies at regular (multiyear) intervals. The foundations of the proposal are that ... Abstract: The conservation measure regarding (or stipulating) the interim distribution of trigger ... level in the fishery of Antarctic krill in Subareas 48.1 through 48.4 (CM 51-07) has continuously been ... . As the trigger level lacks any form of relationship with the actual stock condition this approach is ...
Meeting Document : SC-CAMLR-XXXVI/BG/20 : Autor(es): Delegations of Norway, China and Chile
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Joint research proposal for Dissostichus spp. in Subarea 88.3 by the Republic of Korea and New Zealand
abundance of Antarctic toothfish in Subarea 88.3 and the Scientific Committee has requested members complete ... structure of Antarctic toothfish in this subarea – and their relationship to the rest of the Pacific Sector ... coordinated research proposal for presentation at WG-FSA-17 (WG-SAM-17, para 4.89). This joint research ... previously been released on the slope, whilst also prospecting two of the northern seamount complexes and two ...
Meeting Document : WG-FSA-17/40 : Autor(es): Delegations of the Republic of Korea and New Zealand
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Pilot test of techniques to mitigate seabird interactions with catcher processor vessels in the Bering Sea pollock trawl fishery: final report
close as possible to the water at the stern with a snatch block, paired streamer lines and various ... buoy placed in the offal stream forward of the warps. Results showed that both the snatch block and ... trawl warps. Buoys were less effective and were difficult to position effectively. Formal testing of ... safe and practical deployment of the seabird interaction deterrents was proposed for 2005. Limited ...
Meeting Document : WG-FSA-05/37 : Autor(es): E.F. Melvin, K.S. Dietrich and T. Thomas (USA)
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DEVELOPMENT OF EFFECTIVE MITIGATION TO REDUCE SEABIRD MORTALITY IN THE ICEFISH (CHAMPSOCEPHALUS GUNNARI) TRAWL FISHERY IN SUBAREA 48.3
Subarea 48.3 became a concern in the late 1990s. At this time there was little knowledge on how to ... measures to reduce seabird bycatch levels. This resulted in the development and operational trialing of ... International) Title: DEVELOPMENT OF EFFECTIVE MITIGATION TO REDUCE SEABIRD MORTALITY IN THE ICEFISH ...
Meeting Document : WG-IMAF-09/15 : Autor(es): B. Sullivan (BirdLife International), J. Clark (United Kingdom), K. Reid (Secretariat) and E. Reid (BirdLife International)