Search results
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Fitting a von Bertalanffy growth model to length-at-age data accounting for length-dependent fishing selectivity and length-stratified sub-sampling of length frequency samples
Abstract: Response-biased sampling in the context of regression modelling occurs when sample ... units are selected with a probability that is a function of the response. In sampling to obtain fish to ... process involving a particular gear, and (ii) the method of on-deck sub-sampling fish for ageing from the ... random length frequency sample. When the selectivity of the gear combined with availability of fish to be ...
Meeting Document : WG-FSA-SAM-05/13 : Author(s): S.G. Candy (Australia)
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Age and growth of Scotia Sea icefish Chaenocephalus aceratus (Lönnberg, 1906), from the South Shetland Islands
Abstract: Samples of Chaenocephalus aceratus were collected during a trawl survey carried out ... observed in other recent surveys within the same area, C. aceratus represented one of the predominant ... along their sagittal plane. To estimate the precision of age data, we compared blind readings by readers ... Bertalanffy growth curves were fitted to the estimated age-length data for each sex. The estimated values of ...
Meeting Document : WG-FSA-02/77 : Author(s): M. La Mesa, J. Ashford, E. Larson and M. Vacchi
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Distribution and population structure of Dissostichus eleginoides and D. mawsoni on BANZARE Bank (CCAMLR Division 58.4.3b), Indian Ocean, Antarctic
mainly caught in the deeper slope >1500 m. The separation of the two species by depths may be related ... to the physical intolerance to the cooler temperature by the lack of antifreeze for the former ... species. The mean total length (TL) of females was significantly larger than that of males for both ... species. The proportion of males to the total adults decreased significantly with the depths with gradual ...
Meeting Document : WG-FSA-10/47 : Author(s): K. Taki, M. Kiyota, T. Ichii and T. Iwami (Japan)
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Distribution and population structure of Dissostichus eleginoides and D. mawsoni on BANZARE Bank (CCAMLR Division 58.4.3b), Indian Ocean, Antarctic
mainly caught in the deeper slope >1500 m. The separation of the two species by depths may be related ... to the physical intolerance to the cooler temperature by the lack of antifreeze for the former ... species. The mean total length (TL) of females was significantly larger than that of males for both ... species. The proportion of males to the total adults decreased significantly with the depths with gradual ...
Meeting Document : WG-SAM-10/16 : Author(s): K. Taki, M. Kiyota, T. Ichii and T. Iwami (Japan)
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Fatty acid signature analysis from the milk of Antarctic fur seals and southern elephant seals from South Georgia: implications for diet determination
Abstract: Fatty acid signature analysis (FASA) makes use of specific fatty acids, as well as ... misleading. This study examined fatty acid profiles in milk from two species of pinniped from the Southern ... . Southern elephant seal data could be distinguished from Antarctic fur seals by lower levels of the fatty ... acids 16:4 n1, 18:2 n6, 18:4 n3, 18:4 n1 and 20:5 n3 and by higher levels of 18:0, 18:1 n9/ n11 (i.e. 18 ...
Meeting Document : WG-EMM-99/44 : Author(s): D.J. Brown, I.L. Boyd, G.C. Cripps and P.J. Butler (United Kingdom)
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A BRIEF DESCRIPTION OF NEW ZEALAND SCIENTIFIC OBSERVER EFFORTS IN THE CCAMLR AREA
Abstract: A brief description of New Zealand scientific observer efforts in the CCAMLR Area is ... provided. The nature and extent of observer deployments in the CCAMLR Area are briefly described (c. 500 ... sea days p.a. in three Subareas). The general training of observers through to post-voyage debriefing ... is noted, along with details of the at-sea work conducted. Data collected and data checking ...
Meeting Document : TASO-09/09 : Author(s): Bilton, D., Smith, N.
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Report of the CCAMLR Circumpolar Gap Analysis Marine Protected Areas (MPAs) Technical Workshop (Brussels, Belgium, 10 to 14 September 2012)
the aggregation of available data and the development of conservation objectives for the individual ... domains, which can be included in future systematic conservation planning processes. A total of 23 ... scientists participated in the workshop (locally and by teleconference). Author(s): Delegation of Belgium ... Title: Report of the CCAMLR Circumpolar Gap Analysis Marine Protected Areas (MPAs) Technical Workshop ...
Meeting Document : SC-CAMLR-XXXI/BG/16 : Author(s): Delegation of Belgium
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A comparison of two different methods to age mackerel icefish (Champsocephalus gunnari) at South Georgia
Abstract: Age determinations estimated by means of otoliths and age classes derived from CMIX ... the two methods were revealed. A number of suggestions including an Age Determination Worksop to be ... held in Kaliningrad in 2005 and the exploration of methods in addition to CMIX are made to reconcile ... some of these differences in the future. Author(s): P. Gasyukov (Russia), K.-H. Kock (Germany) and ...
Meeting Document : WG-FSA-04/70 : Author(s): P. Gasyukov (Russia), K.-H. Kock (Germany) and Zh.A. Frolkina (Russia)
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Diet of cape petrel, Daption capense, during late incubation and chick rearing period, at Laurie Island, South Orkney Islands, Antarctica
Abstract: The diet of Cape petrel was investigated on Mossman Hills, Laurie Island, South Orkney ... , during late incubation and chick-rearing period. The analysis of the samples showed that Euphausiids were ... by far the main prey. Antarctic krill Euphausia superba constituted the bulk of the diet ... conducted during the same period of the life cycle. Author(s): Coria, N.R., Montalti, D., Soave, G.E. Title ...
Meeting Document : WG-EMM-95/85 : Author(s): Coria, N.R., Montalti, D., Soave, G.E.
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Acoustic estimates of krill biomass in the Elephant Island area: 1981-1993
Abstract: Acoustic estimates of krill biomass in the vicinity of Elephant Island for the years ... 1981-1993 (with the exception of 1982 and 1986) are presented. Estimates for 1981-1991 are based on ... previous reports adjusted for the recently proposed definition of krill target strength. Biomass estimates ... xl03 t and 52.8 g/m2. Author(s): D.A. Demer and R.P. Hewitt (USA) Title: Acoustic estimates of krill ...
Meeting Document : WG-KRILL-93/49 : Author(s): D.A. Demer and R.P. Hewitt (USA)