Resultados de la búsqueda
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Species identification and age estimation for the ridge-scaled macrourid (Macrourus whitsoni) from the Ross Sea
exhibited a degree of sexual dimorphism. The age at which 50% of fish are sexually mature was estimated to ... whitsoni) from the Ross Sea Abstract / Description: Samples of macrourid rattail by-catch from the ... Zealand for subsequent confirmation of their identity by researchers from the National Institute of Water ... the geographic source of the aged sample. Counts of translucent zones were made from baked and cross ... exhibited a degree of sexual dimorphism. The age at which 50% of fi sh are sexually mature was estimated ... size class at which more than 50% of the fi sh sampled were at maturity stage 2 or greater. The ... at maturity and mean age at maturity. RESULTS Species Identifi cation Of the 361 individually ... estimates of the t0 values. Natural Mortality In all the available age data, 1% of males were at least 55 ...
Science Journal Paper : CCAMLR Science, Volume 10 (CCAMLR Science, Volume 10) : 37–51 : Autor(es): Marriott, P., P.L. Horn and P. McMillan
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Revised growth and length-weight parameters for Antarctic toothfish in the Ross Sea region (881 & 882AB)
estimates of the von Bertalanffy growth curves, estimates of mean length at age using maximum likelihood ... Abstract: We update the estimates of the growth and length-weight parameters for Antarctic ... fishing operations in the Ross Sea region. Estimates of growth and length-weight were similar to those ... previously used, however there was some suggestion that the shape of the growth curve may be better ...
Meeting Document : WG-FSA-2019/11 : Autor(es): A. Dunn and S. Parker
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Temporal variability in Antarctic marine ecosystems: periodic fluctuations in the phocid seals
behavior when demodulated at a period of 5 yr. The Weddell seals were generally in phase with the SOI since ... Abstract: Three species of seals around Antarctica have shown quasi-cyclic patterns in some ... aspect of their biology: the age structure of crabeater seals (Lobodon carcinophagus) around the ... (Hydrurga leptonyx) have appeared in unusually large numbers at Macquarie Island, also at 4- to 5-yr ...
Meeting Document : WG-CEMP-91/13 : Autor(es): J.W. Testa, G. Oehlert, D.G. Ainley, J.L. Bengtson, D.B. Siniff, R.M. Laws and D. Rounsevell (USA)
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Report on scientific observations onboard the Chilean longliner, ‘Puerto Ballena’, in Statistical Subarea 48.3 from March to May 1996
Abstract: Scientific observation under the auspices of the CCAMLR Scheme of International ... Patagonian toothfish (Dissostichus eleginoides) in Subarea 48.3 from March to May 1996. Details of the cruise ... are provided. Biological investigations incorporated length, sex, maturity and weight measurements of ... D. eleginoides, the estimation of the finfish by-catch, the estimation of a conversion factor of ...
Meeting Document : WG-FSA-96/22 : Autor(es): Selling, J., Kock, K.-H.
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PROPOSAL FOR A JOINT CEP/SC-CAMLR WORKSHOP IN 2009
joint CEP/SC-CAMLR workshop. The CEP discussed this at its meeting in June 2008 and suggested a theme of ... Abstract: At its meeting in 2007 CCAMLR endorsed the proposal from the Scientific Committee for a ... areas of common interest might include, though may not be limited to: • climate change research ... CCAMLR input into the Workshop agenda and work plan to inform SC-CAMLR at its meeting in October 2008 ...
Meeting Document : WG-EMM-08/52 : Autor(es): Secretariat
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SC-CAMLR-XXIX
bioregionalisation aimed at establishing Marine Protected Areas in the CCAMLR Area Delegation of France SC-CAMLR-XXIX ... Committee of CCAMLR CEP Observer SC-CAMLR-XXIX/BG/08 Report of the Science Officer’s attendance at the ... Full Name: Twenty-ninth Meeting of the Scientific Committee Location: Hobart, Australia Date(s ... Provisional Agenda for the Twenty-ninth Meeting of the Scientific Committee for the Conservation of Antarctic ...
Meeting
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SC-CAMLR-XVI
Kingdom) SC-CAMLR-XVI/BG/04 Establishment of a CEMP monitoring program at Bouvetøya Delegation of Norway ... (Arctocephalus gazella) in man-made debris at Signy Island, South Orkney Islands 1996/97 Delegation of the United ... length composition data of the longline fishery for Dissostichus eleginoides at the Prince Edward Islands ... Full Name: Sixteenth Meeting of the Scientific Committee Location: Hobart, Australia Date(s ...
Meeting
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Estimating optimal observer coverage in the Antarctic krill fishery
is proposed that an efficient sampling proportion, at least for South Georgia, should be >50% of ... / Description: Data collected as part of the CCAMLR Scheme of International Scientific Observation from ... estimate parameters of interest, in this case the mean (or median) krill length and the rate of larval fish ... : observers have been placed on approximately 50% of vessels fishing in any one season, and have been present ... Marine Fisheries Service of the USA (Barbeaux et al., 2005). Most observer schemes operate at least a ... ) is dependent on the relative variance components at each stage of the sampling design (Volstad et ... analysis (VCA) was then used to investigate the relative importance of sampling at either the inter ... observed at least once in the seven-year period, and the overlap of observed hauls with total hauls in ...
Science Journal Paper : CCAMLR Science, Volume 17 (CCAMLR Science, Volume 17) : 139–154 : Autor(es): Agnew, D.J., P. Grove, T. Peatman, R. Burn and C.T.T. Edwards
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Beach debris survey – Main Bay, Bird Island, South Georgia, 2004/05
Abstract: During the fifteenth year of standardised beach surveys of man-made debris at Bird ... consecutive year, nylon line has been absent from the shores of Bird Island, having once been at a peak of 546 ... since 1990 when the survey began, the amount of miscellaneous debris is much higher though not at the ... Island, South Georgia, a total of 251 items were collected. This represents an encouraging reduction of ...
Meeting Document : SC-CAMLR-XXV/BG/12 : Autor(es): Delegation of the United Kingdom
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e-sc-xxiv-a6.pdf
... summarised by Dr Demer in a presentation at the start of the meeting. History of the krill TS model ... ). The regression is based on empirical measurements of TS at 420 kHz made on 43 individuals of ... derived from measurements of E. superba at 120 kHz, but rather from ‘representative zooplanktonic and ... individual krill at 120 kHz in a chilled tank. They obtained data over a range of orientations, finding a
application/pdf attached to:SG-ASAM-05Meeting Report : SG-ASAM-05