Search results
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A method for estimating recruitment and mortality from time series of length-density data
a method for jointly estimating natural mortality and cohort strength at age 4 using a negative log ... for jointly estimating natural mortality and cohort strength at age 4 using a negative log-likelihood function ... years. A worked example is provided in an appendix. Author(s): A. Constable and I. Ball (Australia ... based on one or more cohorts for which their abundance has been estimated in two or more years. A worked ...
Meeting Document : WG-FSA-00/52 : Author(s): A. Constable and I. Ball (Australia)
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Infectious diseases of Antarctic penguins: current status and future threats
to increase over the last 50 years. However, issues of data not being published and a lack of formal risk ... the last 50 years. However, issues of data not being published and a lack of formal risk assessment ... occurred. The majority of these events have occurred since the year 2000 in regions that will likely ... occurred. The majority of these events have occurred since the year 2000 in regions that will likely ...
Meeting Document : WG-EMM-14/53 : Author(s): W.W. Grimaldi, P.J. Seddon, P.O.B. Lyver, S. Nakagawa and D.M. Tompkins (New Zealand)
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CDS Fund expenditure proposal
for Dissostichus spp. (CDS) Fund for approval by the CDS Fund Review Panel for two activities in 2020 ... for Dissostichus spp. (CDS) Fund for approval by the CDS Fund Review Panel for two activities in 2020 ...
Meeting Document : CCAMLR-38/15 : Author(s): CCAMLR Secretariat
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An updated assessment of unicorn icefish (Channichthys rhinoceratus) in Division 58.5.2, based on results from the 2015 random stratified trawl survey
(2 years) and long term (20 years) projections of unicorn icefish structure, abundance and yield ... (2 years) and long term (20 years) projections of unicorn icefish structure, abundance and yield ... projections (20 year) indicate sustainable yield of 1663 t. ... for the area of Division 58.5.2 to the west of 79°20’ E using standard CCAMLR methods. Short term projections ...
Meeting Document : WG-FSA-15/50 : Author(s): D. Maschette and J. Dell (Australia)
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Preliminary insights of Antarctic toothfish sub-adults life-history traits from the southern Weddell Sea (Subarea 48.5)
were immature, showing an age range of 10-13 years. Main prey consisted of Antarctic silverfish ... -Larsen Ice Shelf. In this document we report first data on individual age, gonad stage of maturity ... . In this document we report first data on individual age, gonad stage of maturity and diet through otolith readings ... , histological and stomach content analyses, respectively. All specimens were immature, showing an age range ...
Meeting Document : WG-FSA-18/06 : Author(s): M. La Mesa, F. Donato and E. Riginella
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Preliminary review of Antarctic toothfish maturity in the Ross Sea
in 2004/2005- 2006/2007 seasons are presented. Morphological indices of females and males, age, indices ... - 2006/2007 seasons are presented. Morphological indices of females and males, age, indices of gonads ... of their large oocytes was 1075- 2331•10-6m in different years. Author(s): S.V. Piyanova and A.F. Petrov (Russia ... ) Title: Preliminary review of Antarctic toothfish maturity in the Ross Sea Approval: Approved ...
Meeting Document : WG-FSA-11/27 : Author(s): S.V. Piyanova and A.F. Petrov (Russia)
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ASSESSMENT MODELS FOR ANTARCTIC TOOTHFISH (DISSOSTICHUS MAWSONI) IN THE ROSS SEA FOR THE YEARS 1997–98 TO 2008–09
Abstract: We provide an update of the Bayesian sex and age structured population stock assessment ... –B), using revised catch, catch-at-age, and tag-recapture data for the 2008–2009 season. The reference model ... We provide an update of the Bayesian sex and age structured population stock assessment model ... revised catch, catch-at-age, and tag-recapture data for the 2008–2009 season. The reference model ...
Meeting Document : WG-FSA-09/40 Rev. 1 : Author(s): A. Dunn and S.M. Hanchet (New Zealand)
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Zooplankton target strength: volumetric or areal dependence?
and 1 MHz and the dependence of these data on animal volume versus cross-sectional area was explored The 420 ... normalized by the square of the animal length) versus ka (the product of wave number and equivalent ... cylindrical radius). The theoretical models chosen for this comparison were two versions of a high-pass bent ... -cylinder model (Stanton, 1989b) that indicate TS is dependent on animal volume, and the ray bent-cylinder ...
Meeting Document : WG-Krill-94/13 : Author(s): D.A. Demer and L.V. Martin (USA)
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Interannual changes in body fat condition, stomach content mass and distribution of minke whales in Antarctic Areas IV and V
of minke whales in Antarctic Areas IV (70°-130° E) and V (130° E-170°W) from 1989/90 to 1994/95. Of the six ... years included in the study, two were categorized as years of poor body fat condition, and three ... as years of good condition. Estimated body weight gain during the feeding season in poor years was 25 ... % lower than in good years. The relationship between girth and stomach content mass in the ice-edge zone ...
Meeting Document : WG-EMM-97/18 : Author(s): Ichii, T., Nishiwaki, S., Tamura, T., Fujise, Y., Matsuoka , K.
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Assessment models for Antarctic toothfish (Dissostichus mawsoni) in the Ross Sea including data from the 2006/07 season
Abstract: We provide an update of the Bayesian sex and age structured population stock assessment ... –B), using revised catch, catch-at-age, and tag-recapture data for the 2007 season. The updated reference ... We provide an update of the Bayesian sex and age structured population stock assessment model ... catch, catch-at-age, and tag-recapture data for the 2007 season. The updated reference model resulted ...
Meeting Document : WG-FSA-07/37 : Author(s): A. Dunn and S.M. Hanchet (New Zealand)