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1. Change-in-ratio and index-removal methods for population assessment and their application to snow crab (Chionoecetes opilio)

   composition, in order to use these methods. We use the methods to estimate the population of legal-size snow ... for fisheries studies. We also show how to combine the two approaches in a single estimator. It is ... crabs (Chionoecetes opillio) in St. Mary's Bay, Newfoundland, before and after the fishery, and to ... of pre-recruits but this requires the assumption of equal catch ability of all animals, a condition ...

   Meeting Document : WS-CRAB-93/10 : Autor(es): X. Xu, E.G. Dawe and J.M. Hoenig (USA)

2. Hook loss in CCAMLR exploratory fisheries

   lines requires an estimate of the number of lost hooks that are attached to sections of line. In 2011 ... attached to sections of lines.  In 2012 15 of the 26 vessel/fishery reports provided non-zero data with an ... to be reiterated in order to achieve a greater level of engagement with the requirements to complete ... Abstract:  The development of methods to estimate unaccounted fishing mortality from lost fishing ...

   Meeting Document : WG-FSA-12/65 : Autor(es): Secretariat

3. Scientific Observer Program (SOP) in Chile

   Secretariat of Fisheries in Chile, the technical information and scientific basis for the regulation of ... coast. This paper describes the scope of the SOP in Chile, its organization, quantity of personnel ... involved, electronic data collection system used by Scientific Observers, and the qualifications of ... Abstract:  IFOP, as non profit marine research institute has the mission to provide to the Under ...

   Meeting Document : TASO-10/08 : Autor(es): O. Guzman (Chile)

4. Comparisons in diet between diurnal and overnight foraging chinstrap penguins at Seal Island

   respectively. The highest intake of fish was observed in 1993/94 when krill abundance was very low. Calorific ... ) and an overnight forager (5732 kJ) based on available input parameters. A comparison of krill in the ... , considered that both foragers tend to take larger krill of the least capable of avoiding capture in their ... their diets but fish constituted 0-1 % and 14-45 % of the diet of diurnal and overnight foragers ...

   Meeting Document : WG-EMM-96/55 : Autor(es): Hayashi, T., Ichii, T., Cameron, M.F., Miura, A., Jansen, J.K., Bengtson, J.L., Boveng, P.

5. Beached birds: a guide used by north pacific groundfish observers to identify seabirds incidentally caught in fisheries

   Abstract:  In the fall of 2002, the U.S. National Marine Fisheries Service (NMFS) purchased 300 ... vessels in the Bering Sea and Gulf of Alaska. This new guide replaces a dichotomous key on looseleaf paper ... of fishery observers to accurately identify seabirds as they come up in the sampled fishing gear ... collection at the NMFS North Pacific Groundfish Observer Program. A copy of Beached Birds is available in the ...

   Meeting Document : WG-FSA-03/24 : Autor(es): T. Hass and S. Davis (USA)

6. Seabird by-catch update on industrial Patagonian toothfish fishery in southern Chile

   determined the initiation of the NPOA to reduce seabird incidental mortality in all longline fisheries in ... Abstract:  Implementation of NPOAs requires in first place an assessment of all longline fisheries ... with presumption of occurring seabird incidental mortality. Chile took this responsibility in 2001 and ... started the NPOA-S process by estimating the seabird bycatch at the Patagonian toothfish fishery in ...

   Meeting Document : WG-FSA-04/13 : Autor(es): J. Arata, C.A. Moreno and R. Hucke-Gaete (Chile)

7. Developing robust biomass estimates and advice on catch limits in research blocks

   resulted in conflicting estimates of biomass between the CPUE by seabed area and the Chapman estimate. The ... . This uses local Chapman biomass estimates in the reference area instead of the stock biomass estimated ... Abstract:  In 2016, changes to the methods used by CCAMLR to estimate biomass in research blocks ... that improves on the original CPUE by seabed area method for toothfish populations in research blocks ...

   Meeting Document : WG-SAM-17/37 : Autor(es): S.J. Parker, S. Mormede, A. Dunn, S.M. Hanchet and C. Marsh

8. Report on fish by-catch during research fishing activities in Division 58.4.4b between 2008 and 2018

   in the eastern part, where unusually high concentrations of Pennatulacea (Sea pens) where reported in ... post-released survival rate, we cannot rule out the fact that the use of longlines, and in particular ... inform bycatch mitigation measures” of the ongoing research plan on Patagonian toothfish (Dissostichus ... composition in number and biomass during the period 2008-2018 to investigate the inter-annual variations in ...

   Meeting Document : WG-FSA-2019/53 : Autor(es): C. Péron, C. Chazeau, N. Gasco and F. Massiot-Granier

9. Fishery selection for Patagonian toothfish in CCAMLR Subarea 48.3, asymptotic or dome shaped?

   Abstract:    Characterisation of fishery selection is key to reducing uncertainty in the ... waters as they age and increase in size and, in combination with the practical difficulties associated ... with age and size to arise. However this type of selection pattern is associated with the estimation of ... highly uncertain quantities of cryptic biomass. A review of the fishery and tagging data from the ...

   Meeting Document : WG-SAM-15/29 : Autor(es): C. Darby, V. Laptikhovsky and M. Soeffker (United Kingdom)

10. Conversion Factors used for Patagonian toothfish in Division 58.5.1. and Subarea 58.6

    in terms of size, space and time. It also looks at the size of sub-sample used for conversion factor ... measurement in relation with the accuracy of weight estimated at sea. Author(s):  N. Gasco (France) Title ... weight and thus assess the amount of fish withdrawn from the stock. This paper describes factors ... emphasise the need to calculate CF with a sub-sample of the catch that is representative of the total catch ...

    Meeting Document : WG-FSA-15/77 : Autor(es): N. Gasco (France)

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