Documents

Document Number	Title	Agenda Item(s)
WS-CRAB-93/01 More Info	Provisional Agenda and Annotation to Provisional Agenda for the Workshop on the Management of the Antarctic Crab Fishery Submitted By: Admin Admin (CCAMLR Secretariat) Request Meeting Document
WS-CRAB-93/02 More Info	List of participants Submitted By: Admin Admin (CCAMLR Secretariat) Request Meeting Document
WS-CRAB-93/03 More Info	List of documents Submitted By: Admin Admin (CCAMLR Secretariat) Request Meeting Document
WS-CRAB-93/04 More Info	The Antarctic crab fishery: extracts from CCAMLR-XI and SC CAMLR-XI Secretariat Submitted By: Admin Admin (CCAMLR Secretariat) Request Meeting Document
WS-CRAB-93/05 More Info	Management and assessment options for the crab fishery around South Georgia M. Basson and D.D. Hoggarth (United Kingdom) Submitted By: Admin Admin (CCAMLR Secretariat) Request Meeting Document
WS-CRAB-93/06 More Info	Data required for implementation of management options M. Basson and J.R. Beddington (United Kingdom) Submitted By: Admin Admin (CCAMLR Secretariat) Request Meeting Document
WS-CRAB-93/07 More Info	A preliminary investigation of the possible effects of rhizocephalan parasitism on the management of the crab fishery around South Georgia M. Basson (United Kingdom) Submitted By: Admin Admin (CCAMLR Secretariat) Request Meeting Document
WS-CRAB-93/08 More Info	Uncertainty, resource exploitation, and conservation: lessons from history D. Ludwig, R. Hilborn and C. Walters (USA) Submitted By: Admin Admin (CCAMLR Secretariat) Request Meeting Document
WS-CRAB-93/09 More Info	Modelling crustacean fisheries: effects of parasites on management strategies A.M. Kuris and K.D. Lafferty (USA) Abstract: The reproductive performance of commercially important crustaceans may be considerably affected by symbiotic nemertean egg predators and parasitic castrators. Because these parasites commonly affect only females or feminize males, they may be protected by management practices that protect females. To manage a parasitized stock, we suggest that strategies should vary depending on the Read More Submitted By: Admin Admin (CCAMLR Secretariat) Request Meeting Document
WS-CRAB-93/10 More Info	Change-in-ratio and index-removal methods for population assessment and their application to snow crab (Chionoecetes opilio) X. Xu, E.G. Dawe and J.M. Hoenig (USA) Abstract: Change-in-ratio and index-removal estimators are presented in a general form suitable for fisheries studies. We also show how to combine the two approaches in a single estimator. It is necessary to sample the population before and after the fishery, and to determine the total harvest and its composition, in order to use these methods. We use the methods to estimate the population of legal-size Read More Submitted By: Admin Admin (CCAMLR Secretariat) Request Meeting Document
WS-CRAB-93/11 More Info	Relative selectivity of four sampling methods using traps and trawls for male snow crabs (Chionoecetes opilio) J.M. Hoenig and E.G. Dawe (USA) Abstract: Catch rate and catch composition of male snow crabs were compared for four sampling methods. These methods were: (1) large-meshed commercial traps, (2) small-meshed traps, (3) bottom trawl deployed during the day. and (4) bottom trawl deployed at night. Catches were characterized in terms of crab body sizes, shell conditions, and claw allometry. We concluded that: 1) mean and modal size of Read More Submitted By: Admin Admin (CCAMLR Secretariat) Request Meeting Document
WS-CRAB-93/12 More Info	Growth per molt of male snow crab Chionoecetes opilio from Conception and Bonavista Bays, Newfoundland D.M. Taylor and J.M. Hoenig (USA) Abstract: Over 6000 male snow crabs were tagged during a 6-year period in Conception Bay, Newfoundland, in order to estimate the increase in size at the time of molting. Ninety-two animals were recaptured which had usable information on growth increments. Based on the amount of growth, we hypothesized that 20 of these had molted once while the remainder molted twice. Two lines of evidence support this Read More Submitted By: Admin Admin (CCAMLR Secretariat) Request Meeting Document
WS-CRAB-93/13 More Info	Leslie analyses of commercial snow crab trap data: a comparative study of catchability coefficients J.M. Hoenig, E.G. Dawe, D.M. Taylor, M. Eagles and J. Tremblay (USA) Abstract: If we could determine the relationship between catch rates in a trap survey and absolute population size, then we could estimate the standing stock of snow crabs before the fishing season from a survey conducted with traps. One way to calibrate the catch rates is to examine available historical Leslie analyses of commercial catch data obtained over several years and quantify the relationship Read More Submitted By: Admin Admin (CCAMLR Secretariat) Request Meeting Document
WS-CRAB-93/14 More Info	Commercial vessel CCAMLR subsample logbook USA Submitted By: Admin Admin (CCAMLR Secretariat) Request Meeting Document
WS-CRAB-93/15 More Info	Commercial vessel daily activity logbook USA Submitted By: Admin Admin (CCAMLR Secretariat) Request Meeting Document
WS-CRAB-93/16 More Info	Commercial vessel fishing effort logbook USA Submitted By: Admin Admin (CCAMLR Secretariat) Request Meeting Document
WS-CRAB-93/17 More Info	Graphical presentations of preliminary data collected aboard the F/V Pro Surveyor in 1992 USA Submitted By: Admin Admin (CCAMLR Secretariat) Request Meeting Document
WS-CRAB-93/18 More Info	Biology of blue crab, Portunus trituberculatus in the Yellow Sea and the East China Sea J.-U. Lee and D.-H. An (Republic of Korea) Submitted By: Admin Admin (CCAMLR Secretariat) Request Meeting Document
WS-CRAB-93/19 More Info	Nota sobre la presencia de Paralomis spinosissima y Paralomis formosa en las capturas de la campaña “Antartida 8611” L.J. López Abellán and E. Balguerías (Spain) Submitted By: Admin Admin (CCAMLR Secretariat) Request Meeting Document
WS-CRAB-93/20 More Info	Demography of the Korean blue crab, Portunus trituberculatus fishery exploited in the west coast of Korea and the East China Sea J.-U. Lee and D.-H. An (Republic of Korea) Abstract: A quantitative analysis was carried out to estimate the maximum sustainable yield of blue crab distributed around the waters of Korea and in the East China Sea without using fishing effort data, fitting monthly catch data to a modified surplus production model. The maximum sustainable yield of this fish stock was estimated to be about 22,400 tonnes per year and Fmsy to be 0.95. Submitted By: Admin Admin (CCAMLR Secretariat) Request Meeting Document
WS-CRAB-93/21 More Info	A brief exploitation of the stone crab Lithodes murrayi (Henderson) off south west Africa, 1979/80 R. Melville-Smith (South Africa) Abstract: The stone crab Lithodes murrayi was exploited briefly off South West Africa between November 1979 and April 1980, the fishery being terminated when the catch per unit effort fell to an uneconomic level. The extent of the L. murrayi grounds is examined on the basis of catch-per-unit-effort data. The species is largely confined to a bathymetric corridor of 500–700 m off South West Africa. Prior Read More Submitted By: Admin Admin (CCAMLR Secretariat) Request Meeting Document
WS-CRAB-93/22 More Info	Quantitative stock survey and some biological and morphometric characteristics of the deep-sea red crab Geryon quinquedens off south west Africa C.J. De B. Beyers and C.G. Wilke (South Africa) Abstract: In order to assess the abundance of the red crab Geryon quinquedens, two otter-trawl cruises were undertaken in July and September 1978, on the continental slope off South West Africa. A bimodal frequency distribution of female crabs was evident with modal sizes at 7.7 cm and 8.7 cm carapace width, whereas the mode for males was at 11.2 cm. In general. larger animals tended to inhabit Read More Submitted By: Admin Admin (CCAMLR Secretariat) Request Meeting Document
WS-CRAB-93/23 More Info	A system-of-equations approach to modeling age structured fish populations: the case of Alaskan red king crab, Paralithodes camtschaticus J.A. Greenberg, S.C. Matulich and R.C. Mittelhammer (USA) Abstract: This paper presents a simultaneous system-of-equations approach to modeling age-structured populations using trawl survey age/size frequency data. The analysis builds upon a Ricker spawner-recruit structure and provides a cohort-based estimation method that retains the underlying dynamic properties of a delay-difference model. The framework shares a common spawner-recruit function across age- Read More Submitted By: Admin Admin (CCAMLR Secretariat) Request Meeting Document
WS-CRAB-93/24 More Info	Plots of South Georgia Island crab data R.S. Otto (USA) Submitted By: Admin Admin (CCAMLR Secretariat) Request Meeting Document
WS-CRAB-93/25 More Info	Extract from: Macpherson, E. 1988. Revision of the family Lithodidae samouelle, 1819 (Crustacea, Decapoda, Anomura) in the Atlantic Ocean. Monografías de Zoología Marina Vol. 2: 9-153 MacPherson, E. Submitted By: Admin Admin (CCAMLR Secretariat) Request Meeting Document

WS-CRAB-93

Agenda