Resultados de la búsqueda
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Fecundity and size at sexual maturity of the bigeye grenadier (Macrourus holotrachys) at South Georgia (CCAMLR Subarea 48.3)
to 260,000 eggs, a relatively high number for a macrourid. Mature ovaries were found to contain eggs ... final ovarian development is a prolonged process in M. holotrachys which probably lasts for a period of ... greater than a year. Sex ratios of specimens caught in the longline fishery are highly skewed with females ... outnumbering males by a ratio of 32:1 which may represent the true ratio of females to males within the ...
Meeting Document : WG-FSA-02/26 : Autor(es): T. Mulvey, S.A. Morley, M. Belchier and J. Dickson (United Kingdom)
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Longline fishing at Tristan da Cunha: impact on seabirds
important seabird populations. Two longline fisheries occur within Tristan’s Exclusive Economic Zone: a ... pelagic fishery for tunas and a demersal fishery for bluefish and alfoncino. Fishery observers have ... lines during the day, only one bird (a Great Sheawater Puffinus gravis) was killed (mortality rate 0.001 ... effort, probably has a much greater impact. Observations aboard one vessel in mid-winter suggest a ...
Meeting Document : WG-FSA-00/13 : Autor(es): N. Glass, I. Lavarello, J.P. Glass and P.G. Ryan (South Africa)
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Krill distribution variability and fishery conditions within the local ground of Subarea 48.3 in June 1991
Abstract: Experiments on estimation of krill transport by a current and its distribution ... characteristics variability were carried out within a local ground of Subarea 48.3 in the fleet operation area. It ... coefficient of catch per a houl of BMRT type vessel amount to V = 0.7, that of a trawl catchability V = 0.197 ... , the variation coefficient of krill biomass within the fishing ground V = 0.6, and a variation ...
Meeting Document : WG-EMM-95/04 : Autor(es): Kasatkina, S.M.
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Vessel notification
Abstract: A feasibility study of a modified NAFO ‘Hail’ System which requires that CCAMLR Flag ... divisions of the Convention Area, was carried out to assess how such a system might strengthen the CCAMLR ... Inspection if it were to be combined with a reliable system of advance notification of fishing vessels ... compared with the performance of a satellite-based vessel monitoring system (Inmarsat-C/GPS), which is also ...
Meeting Document : CCAMLR-XIV/13 : Autor(es): Secretariat
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Report on marine debris collected at Cape Shirreff, Livingston Island, during the 1994/95 Antarctic season
Abstract: A summarized information on marine debris collected in the beaches of Cape Shirreff ... , Livingston Island, during the Antarctic season 1994/95 is given. Eventhough a complete collection of beach ... litter at Cape Shirreff was carried out in 1993/94, with a total of 1,754 articles weighing 284.29 kg ... , during the present survey a total of 2,744 articles with 237.7 kg were obtained, indicating that the ...
Meeting Document : CCAMLR-XIV/BG/24 : Autor(es): Delegation of Chile
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Modelling crustacean fisheries: effects of parasites on management strategies
. To manage a parasitized stock, we suggest that strategies should vary depending on the recruitment ... dynamics of both host and parasite. For a certain spatial scale, recruitment to a population may be " ... protection of females on a hypothetical fishery for different combinations of host and parasite recruitment ... dynamics. The models suggest that the common practice of releasing females is not advantageous when a ...
Meeting Document : WS-CRAB-93/09 : Autor(es): A.M. Kuris and K.D. Lafferty (USA)
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Sensitivity analysis identifies high influence sites for estimates of penguin krill consumption on the Antarctic Peninsula
Abstract: Krill consumption by natural predators represents a critical link between surveys and ... models of standing krill biomass and the design of a sustainable krill fishery for the Scotia Sea ... . Antarctic krill (Euphausia superba) is a significant component of diet for penguins breeding in this region ... in krill predation estimates. We use a comprehensive database of Antarctic penguin abundances to ...
Meeting Document : WG-EMM-12/P02 : Autor(es): H.J. Lynch, N. Ratcliffe, J. Passmore, E. Foster and P. N. Trathan
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Revised research plan for the exploratory longline fishery for Dissostichus spp. in 2015/16 in Division 58.4.1
this Division. In 2008, only one vessel, Tronio, has conducted research fishing in accordance with a ... achieve a robust stock assessment. The aim is to collect sufficient data to provide an advice on a catch ... limit according to CCAMLR decision rules. This paper presents a proposal for a research plan for 2015 ... expectation of tag-recapture. Author(s): A. Rélot-Stirnemann (France) Title: Revised research plan for the ...
Meeting Document : WG-FSA-15/73 : Autor(es): A. Rélot-Stirnemann (France)
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COLTO Depredation Workshop
fisheries, as well as a vision of what is required in the short-to-medium term to better understand and ... toothfish fisheries, and it was agreed that the scientists who participated in the workshop would produce a ... peer-reviewed paper, encompassing a global review on depredation in high latitude fisheries; and ... operational guidelines in regards to depredation. A second depredation workshop is planned for 2018, aimed at ...
Meeting Document : SC-CAMLR-XXXV/BG/23 : Autor(es): Submitted by COLTO
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Simulating performance of trend analysis for setting catch limits in exploratory toothfish research plans
Abstract: Catch limits for toothfish in research blocks were set for the 2017/18 season using a ... qualitative analysis of trends in biomass estimated in each research block and a series of simple decision ... developed and tested as a matter of priority for WG-SAM-18. We formalised and codified the rules and ... developed a simulation approach to examine the performance of the trend analysis rules for scenarios with ...
Meeting Document : WG-SAM-18/23 : Autor(es): S. Hoyle, S. Parker, A. Dunn and S. Mormede