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Geographical differences in the condition, reproductive development, sex ratio and length distribution of Antarctic toothfish (Dissostichus mawsoni) from the Ross Sea, Antarctica (CCAMLR Subarea 88.1)
length distribution of Antarctic toothfish (Dissostichus mawsoni) from the Ross Sea, Antarctica (CCAMLR ... Subarea 88.1) Abstract / Description: A number of morphological and reproductive measurements made ... to 2004/05 fishing seasons on board the autoliner San Aotea II have been analysed. Results of this ... study indicate measurable differences in a number of indices from toothfish found on the Ross shelf ... paper, D. mawsoni of less than 100 cm TL represented less than 2% of the numbers in each annual sample ... GEOGRAPHICAL DIFFERENCES IN THE CONDITION, REPRODUCTIVE DEVELOPMENT, SEX RATIO AND LENGTH DISTRIBUTION OF ... @clear.net.nz Abstract A number of morphological and reproductive measurements made seasonally on Antarctic ... seasons on board the autoliner San Aotea II have been analysed. Results of this study indicate measurable ...
Science Journal Paper : CCAMLR Science, Volume 13 (CCAMLR Science, Volume 13) : 27–45 : Автор(ы): Fenaughty, J.M
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Integration of CPUE data into assessments using the Generalised Yield Model
Paper Title: Integration of CPUE data into assessments using the Generalised Yield Model Abstract ... accorded high priority to the development of methods of integrating different indicators of stock status ... the use of importance sampling, for incorporating information on trends in standardised CPUEs into GYM ... assessments. The use of the method is illustrated using data for Patagonian toothfish (Dissostichus ... the assessments, and WG-FSA had no time to consider this method in detail. The aim of this paper ... CCAMLR Science, Vo l . 8 (2001): 65-74 INTEGRATION OF ... Group on Fish Stock Assessment (WG-FSA) has had available to it two indicators of stock status for ... direct assessments of the abundance of fish in the population (SC-CAMLR, 1995). The first of these ...
Science Journal Paper : CCAMLR Science, Volume 8 (CCAMLR Science, Volume 8) : 65–74 : Автор(ы): Kirkwood, G.P. and A.J. Constable
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A comparison between otoliths and scales for use in estimating the age of Dissostichus eleginoides from South Georgia
Paper Title: A comparison between otoliths and scales for use in estimating the age of ... understanding the population dynamics and productivity of a fish stock. The use of scales to estimate age can ... result in large errors in age data for long-lived species, usually due to compression of scale circuli ... whose age has been estimated using both scales and otoliths. We estimated the age of D. eleginoides ... placed in paper envelopes to dry. A sub- sample of 133 fish was selected; comparatively few fish were ... BETWEEN OTOLITHS AND SCALES FOR USE IN ESTIMATING THE AGE OF DISSOSTICHUS ELEGINOlDES FROM SOUTH ... the population dynamics and productivity of a fish stock. The use of scales to estimate age can ... result in large errors in age data for long-lived species, usually due to compression of scale circuli ...
Science Journal Paper : CCAMLR Science, Volume 8 (CCAMLR Science, Volume 8) : 75–92 : Автор(ы): Ashford, J.R., S. Wischniowski, C. Jones, S. Bobko and I. Everson
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Factors that may influence the accuracy of abundance estimates from CCAMLR tag-recapture programs for Dissostichus spp. and best practice for addressing bias
Paper Title: Factors that may influence the accuracy of abundance estimates from CCAMLR tag ... Lincoln-Petersen equation, the simplest form of an abundance estimator using tag-recapture data, was used ... cases, examples of at-sea or model-based approaches are available from established Dissostichus spp. tag ... -recapture programs to reduce these biases. Estimates of post-capture mortality, tag-detection rates and ... that led to the development and refinement of this paper. We also thank review- ers Sophie Mormede and ... estimates of population size. In the CCAMLR area, tagging programs have existed in some fisheries for ... , 2002), growth rates (Candy et al., 2007; Marlow et al., 2003) and mortality rates (Candy, 2011b) of ... toothfish. The use of tag- recapture data as an integral part of stock assess- ments is a relatively recent ...
Science Journal Paper : CCAMLR Science, Volume 20 (CCAMLR Science, Volume 20) : 63–72 : Автор(ы): Welsford, D.C. and P.E. Ziegler
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Seabird by-catch by autoline vessels: do line setters increase the sink rate of integrated weight longlines?
Paper Title: Seabird by-catch by autoline vessels: do line setters increase the sink rate of ... . A trial was conducted in the Ross Sea to determine the effectiveness of line setters in increasing ... the sink rates of IW longlines. Time-depth recorders were deployed on lines set with and without a ... line setter using a paired-treatment design. Sink rates of longlines set with and without a line setter ... AUTOLINERS AND SEABIRD BY-CATCH: DO LINE SETTERS INCREASE THE SINK RATE OF INTEGRATED WEIGHT LONGLINES? G ... . Robertson Department of the Environment, Water, Heritage and the Arts Australian Antarctic Division ... Ministry of Fisheries PO Box 1020 Wellington, New Zealand M. McNeill Sealord Group Vickerman Street ... Nelson, New Zealand S.G. Candy Department of the Environment, Water, Heritage and the Arts ...
Science Journal Paper : CCAMLR Science, Volume 15 (CCAMLR Science, Volume 15) : 107–114 : Автор(ы): Robertson, G., J. Williamson, M. McNeill, S.G. Candy and N. Smith
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Investigations of required sampling regimes for environmental parameters
Paper Title: Investigations of required sampling regimes for environmental parameters Abstract ... / Description: The sensitivity of different sampling regimes in identifying inter-annual changes in ... monthly mean temperature over two years with a significance α of 0.05 and a power P of 0.8. Sampling wind ... monthly mean log-transformed wind speed α of 0.05 and P of 0.9. File: 35-Agnew.pdf ... parameter with a significance level exS 01 and a statistical power of P (= 1-~) ;::: 0.8. This paper ... WG-CEMP-90/19 INVESTIGATIONS OF REQUIRED SAMPLING ... REGIMES FOR ENVIRONMENTAL PARAMETERS D.J. Agnew* Abstract The sensitivity of different sampling ... significance a of 0.05 and a power P of 0.8. Sampling wind speed continuously or as daily maxima and minima ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 561–573 : Автор(ы): Agnew, D.J.
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Size at sexual maturity of Patagonian toothfish (Dissostichus eleginoides)
Paper Title: Size at sexual maturity of Patagonian toothfish (Dissostichus eleginoides) Abstract ... / Description: Analyses of size at sexual maturity were undertaken on samples of Patagonian toothfish ... proportion, 25 to 43%, of sexually mature fish were not coming into spawning condition. This introduces a ... bias leading to the overestimation L m50 of calculated by conventional methods. Further analysis ... this paper, data from the observer program have been analysed to provide a clearer indication of the ... MATURITY OF PATAGONIAN TOOTHFISH (DISSOSTICHUS ELEGINOIDES) I. Everson and A. Murray British Antarctic ... Survey High Cross, Madingley Road Cambridge CB3 OET, United Kingdom Abstract Analyses of size at ... sexual maturity were undertaken on samples of Patagonian toothfish (Dissostichus eleginoides) caught in ...
Science Journal Paper : CCAMLR Science, Volume 6 (CCAMLR Science, Volume 6) : 37–46 : Автор(ы): Everson, I. and A.W. Murray
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Research currently being undertaken by the Republic of South Africa on "dependent and related species" within the Antarctic marine ecosystem
Paper Title: Research currently being undertaken by the Republic of South Africa on " ... components of the biological sciences programme are described. The primary objective of the studies being ... undertaken is to improve our understanding of the ecology of important predators (especially seals and ... --CAMLR-IV/BG/2 1985 RESEARCH CURRENTLY BEING UNDERTAKEN BY THE REPUBLIC OF SOUTH AFRICA ON "DEPENDENT ... AND RELATED SPECIES" WITHIN THE ANTARCTIC MARINE ECOSYSTEM Abstract Selected components of the ... biological sciences programme are described. The primary objective of the sudies being undertaken is to ... improve our understanding of the ecology of important predators (especially seals and seabirds) and ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/2 (Selected Scientific Papers, SC-CAMLR-SSP/2) : 59-77 : Автор(ы): South Africa
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On the power to detect changes using the standard methods for monitoring parameters of predatory species
of predatory species Abstract / Description: The CCAMLR guidelines (CCAMLR, 1989) for analyzing the ... Islands of lengths of first incubation shifts by penguins(Standard Method A2.1), duration of penguin ... of the power of Standard Methods A3.1, A5.1, C1.0, and C2.0 are proposed. File: 22-Boveng-and ... Paper Title: On the power to detect changes using the standard methods for monitoring parameters ... to detect changes. In the remainder of this paper, we first suggest several changes to the ... data to another paper evaluating the different types of analysis appropriate for proportions ... modifications we described above, is beyond the scope of this paper. We will use the data from Seal Island to ... STANDARD METHODS FOR MONITORING PARAMETERS OF PREDATORY SPECIES P. Boveng and J.L. Bengtson Abstract ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/6 (Selected Scientific Papers, SC-CAMLR-SSP/6) : 377–397 : Автор(ы): Boveng, P. and J.L. Bengtson
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Status of the krill stock around Elephant Island in 1991/92 and 1992/93
Paper Title: Status of the krill stock around Elephant Island in 1991/92 and 1992/93 Abstract ... / Description: Krill stock composition and distribution patterns in the vicinity of Elephant Island during the ... austral summers of 1991/92 and 1992/93 are described and compared with information from previous years ... . The general distribution of krill length and maturity classes conformed to previous descriptions and ... CCAMLR Science, Vol. 1: 7-33 STATUS OF THE KRILL STOCK ... patterns in the vicinity of Elephant Island during the austral summers of 1991/92 and 1992/93 are ... described and compared with information from previous years. The general distribution of krill length and ... of the krill stocks in the Antarctic Peninsula region. The length frequency distributions and ...
Science Journal Paper : CCAMLR Science, Volume 1 (CCAMLR Science, Volume 1) : 7–33 : Автор(ы): Loeb, V. and V. Siegel
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