Resultados de la búsqueda
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Diet and prey consumption of Antarctic petrels Thalassoica antarctica at Svarthamaren, Dronning Maud Land and at sea outside the colony
Abstract: The diet of the Antarctic petrel Thalassoica antarctica was studied during two years at ... found in other diet studies. Estimates of food consumption for birds breeding at Svarthamaren (c ... at Antarctic petrels from Svarthamaren may fly more than 3,000 km during one foraging trip and may ... consumption of Antarctic petrels Thalassoica antarctica at Svarthamaren, Dronning Maud Land and at sea outside ...
Meeting Document : WG-EMM-97/58 : Autor(es): Røv, N., Lorentsen, S., Klages, N.
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Estimation of natural mortality for the Patagonian toothfish at Heard and McDonald Islands using catch-at-age and aged mark-recapture data from the main trawl ground
Paper Title: Estimation of natural mortality for the Patagonian toothfish at Heard and McDonald ... adopted whereby the relatively long time series of catch-at-age and mark-recapture data from the main ... directly from the estimates of population numbers-at-age. The properties of these two models for estimation ... Islands using catch-at-age and aged mark-recapture data from the main trawl ground Abstract / Description ... size and the age-at-maturity ogive. The integrated assessments using CASAL (Bull et al., 2005) of ... Science, Vol. 18 (2011): 29–45 29 EstImatIon of natural mortalIty for thE PatagonIan toothfIsh at ... time series of catch-at-age and mark-recapture data from the main trawl ground at HIMI were used to ... require a catch equation but removes catch-at-age numbers directly from the estimates of population ...
Science Journal Paper : CCAMLR Science, Volume 18 (CCAMLR Science, Volume 18) : 29–45 : Autor(es): Candy, S.G., D.C. Welsford, T. Lamb, J.J. Verdouw and J.J. Hutchins
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Estimation of effective sample size for catch-at-age and catch-at-length data using simulated data from the Dirichlet-multinomial distribution
Paper Title: Estimation of effective sample size for catch-at-age and catch-at-length data using ... distribution of catch-at-age or catch-at-length frequencies using a multinomial likelihood when there is extra ... simulated data from the Dirichlet-multinomial distribution Abstract / Description: The incorporation of ... ‘effective sample size’ (ESS) in integrated assessments is an approximate but simple way of modelling the ... Estimation of EffEctivE samplE sizE for catch-at-agE and catch-at-lEngth data using simulatEd data from ... integrated assessments is an approximate but simple way of modelling the distribution of catch-at-age or ... catch-at-length data consist of sample frequencies for each age class or length bin usually obtained ... ., 1998) and Stock Synthesis Program (Methot, 2000, 2005) also limit input of catch-at-length or catch ...
Science Journal Paper : CCAMLR Science, Volume 15 (CCAMLR Science, Volume 15) : 115–138 : Autor(es): Candy, S.G
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Fecundity and size at sexual maturity of the bigeye grenadier (Macrourus holotrachys) at South Georgia (CCAMLR Subarea 48.3)
at different stages of development suggesting that M. holtrachys may have an extended spawning season ... . Analyses of size at sexual maturity indicate that Lmat 50 occurs at 29cm (pre-anal length) whilst Lint 50 ... sexual maturity of the bigeye grenadier (Macrourus holotrachys) at South Georgia (CCAMLR Subarea 48.3 ... Abstract: Fecundity and size at sexual maturity were investigated in 486 bigeye grenadier ...
Meeting Document : WG-FSA-02/26 : Autor(es): T. Mulvey, S.A. Morley, M. Belchier and J. Dickson (United Kingdom)
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Factors affecting the growth rate and mass at weaning of Antarctic fur seal pups at Bird Island, South Georgia
foraging trips, and the mean duration of both foraging trips at sea and nursing visits ashore on the growth ... and mass at weaning of pups of Antarctic fur seals (Arctocephalus gazella) during the austral summers ... (United Kingdom) Title: Factors affecting the growth rate and mass at weaning of Antarctic fur seal pups ... Abstract: We studied the influence of sex of pup, maternal age, birth date of pup, number of ...
Meeting Document : WG-CEMP-93/09 : Autor(es): N.J. Lunn, I.L. Boyd, T. Barton and J.P. Croxall (United Kingdom)
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Power analyses of CEMP indices for penguins at Admiralty Bay and fur seals at Cape Shirreff and Seal Island
actually exist. We estimated the power of rejecting these null hypotheses at three levels of? (the ... Abstract: We used the program MONITOR to conduct a set of power analyses for CEMP indices ... developed by the US AMLR Program. We consider CEMP indices A2, A3, A5, A6, A7, and A8 for penguins at ... Admiralty Bay, and indices C1 and C2 for fur seals at Cape Shirreff and Seal Island. Our power analyses ...
Meeting Document : WG-EMM-03/52 : Autor(es): G.M. Watters, R.P. Hewitt, W.Z. Trivelpiece and M.E. Goebel (USA)
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Estimation of natural mortality for the Patagonian toothfish at Heard and McDonald Islands using catch-at-age and aged mark-recapture data from the main trawl ground
. An alternative strategy was adopted whereby the catch-at-age and mark-recapture data were restricted ... to the main trawl ground in which the longest time series of catches and the great majority of ... releases and recaptures of tagged fish were available. Catch and releases by age class for this fishery ... were obtained using proportions-at-length and fishery and year specific age length keys (ALKs) for ...
Meeting Document : WG-FSA-10/41 : Autor(es): S. Candy, D. Welsford, T. Lamb, J. Verdouw and J. Hutchins (Australia)
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Report of the Workshop on Predator-Prey-Fisheries Interactions at Heard Island and McDonald Islands and at Macquarie Island
Author(s): Delegation of Australia Title: Report of the Workshop on Predator-Prey-Fisheries ... Interactions at Heard Island and McDonald Islands and at Macquarie Island Approval: Approved ...
Meeting Document : WG-EMM-97/27 : Autor(es): Delegation of Australia
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Estimates of natural and fishing mortality from toothfish mark–recapture and catch-at-age data at South Georgia
bias, using simulated data. The results confirm earlier findings, with lower estimates of natural and ... mark-recapture models of this type. Given the increasing number of releases and recaptures in all the ... current tagging programs, we suggest that this type of modelling approach can serve as both a useful tool ... estimates of the exploitation rate predicted by the full assessment models, currently being implemented ...
Meeting Document : WG-FSA-06/54 : Autor(es): R.M. Hillary and D.J. Agnew (United Kingdom)
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Update of ongoing work on age and growth of Antarctic toothfish (Dissostichus mawsoni) from Division 58.4.1 by Australia and Spain
Antarctic toothfish in this so called “data poor” area at the end of the whole experience. From the five ... this so called “data poor” area at the end of the whole experience. From the five surveys ... and 2017 respectively, in order to get data and biological samples which enable an assessment of ... , Japan, Republic of Korea, France and Spain. Spain and Australia are working on the ageing and growth ...
Meeting Document : WG-FSA-18/54 Rev. 1 : Autor(es): L.J. López-Abellán, M.T.G. Santamaría, R. Sarralde, S. Barreiro, B. Farmer and T. Barnes