Search results
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Methodology of data collection on net selectivity and accidental mortality of fish passing through the mesh of the codend
describes an experiment to determine the accidental mortality of fish passing through the trawl codend ... of fish passing through the mesh of the codend Approval: Approved ... an experiment to determine the accidental mortality of fish passing through the trawl codend. It contains ... Methodology of data collection on net selectivity and accidental mortality of fish passing through ...
Meeting Document : SC-CAMLR-V/BG/41 : Author(s): Delegation of the USSR
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Comparison of estimators of effective sample size for catch-at-age and catch-at-length data using simulated data from the Dirichlet-multinomial Distribution
is an approximate but simple way of modelling the distribution of catch-at-age or catch-at-length frequencies using ... a multinomial likelihood when there is extra-multinomial heterogeneity in age class or length class frequencies ... function in CASAL determines the implicit weight given to the commercial catch-at-age or catch-at-length ... with marginal class probabilities generated using a simple age-structured model incorporating fishing ...
Meeting Document : WG-SAM-07/7 : Author(s): S.G. Candy (Australia)
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A characterisation of the toothfish fishery in Subareas 88.1 and 88.2 from 1997–98 to 2012–13
ages and ages of larger fish increased in the first few years of the fishery in each area but have ... shallower there in the last four years. There is some evidence for a similar reduction in mean age in SSRU ... of smaller fish on the Slope. Mean ages and ages of larger fish increased in the first few years ... that the age data are given low weighting in the 2013 assessment and that otolith readings for this area ...
Meeting Document : WG-FSA-13/48 : Author(s): S. Hanchet, S. Mormede and A. Dunn (New Zealand)
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Feasibility of lead-radium dating the otoliths of blackfin icefish (Chaenocephalus aceratus) and ocellated icefish (Chionodraco rastrospinosus)
in determining the parameters of future applications that would lead to a validation of age. In the current study ... levels, led to age determinations that had a high margin of uncertainty; however, the findings led ... , but would provide the opportunity to make an age determination that does not reply on growth zone counting ... of otoliths from these species be given a priority whenever possible to facilitate future age and growth ...
Meeting Document : WG-FSA-10/17 : Author(s): A.H. Andrews, M. La Mesa and J. Ashford (USA)
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The Kerguelen database
frequency distributions of the species are also provided for the period 1979/80–1985/86. File: 02 ... for the period 1979/80–1985/86. ... 1985 % 1986 10 20 30 40 50 L( cm) V VII IX XI XIII xv XVII VI VIII X XII XIV XVI XVIII Age ... " YUII ~ -..J % 20 10 Figure 10 - 48 - LFD and ageing of N. squamifrons from the southern ... ). This is very useful as age determination with oto1iths is difficult. We have obtained the following data ... to only one age group. The LFD and ageing of N. squamifrons are illustrated in Figure 10 ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/3 (Selected Scientific Papers, SC-CAMLR-SSP/3) : 23-54 : Author(s): Duhamel, G.
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WG-FSA-10
of age characteristics of Antarctic toothfish (Dissostichus mawsoni) from the Indian Ocean sector ... (Statistical Area 41) Delegation of Ukraine WG-FSA-10/15 Manual: estimating the age of Patagonian toothfish ... A preliminary assessment of age and growth of eel cod (Muraenolepis sp.) and violet cod (Antimora rostrata ... of age and growth of Antarctic silverfish (Pleuragramma antarcticum) in the Ross Sea, Antarctica C.P ...
Meeting
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Investigating the uncertainty of age determinations for Patagonian toothfish (Dissostichus eleginoides) and the implications for stock assessment
of the matrix and a lack of smoothness in the probabilities for ages above 25 years. Positive errors now ... expanded the reference collection to include an additional 50 otoliths with a mean age above 25 years ... and a lack of smoothness in the probabilities for ages above 25 years. Positive errors now aggregate ... the reference collection to include an additional 50 otoliths with a mean age above 25 years. The revised method ...
Meeting Document : WG-FSA-14/46 : Author(s): P. Burch, P. Ziegler, W. de la Mare and D. Welsford (Australia)
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Effects of weather and sea-ice on the reproductive performance of the Adélie penguin at Edmonson Point, Ross Sea
0 2 4 6 8 10 12 14 16 N u m b e r o f d e a d c h ic k s 0 10 20 30 40 50 60 70 80 ... 7/1 17/1 27/1 6/2 16/2 N u m b e r o f d e a d c h ic k s 0 10 20 30 40 50 60 70 80 ... /99 0 2 4 6 8 10 12 14 16 N u m b e r o f d e a d c h ic k s 0 10 20 30 40 ... : comparison between years. J. Anim. Ecol., 62: 634–646. Watanuki, Y., A. Kato, Y. Naito, G. Robertson ...
Science Journal Paper : CCAMLR Science, Volume 11 (CCAMLR Science, Volume 11) : 99–109 : Author(s): Olmastroni, S., F. Pezzo, V. Volpi and S. Focardi
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Draft integrated stock assessment for the Heard Island and McDonald Islands Patagonian toothfish (Dissostichus eleginoides) fishery in Division 58.5.2
with catch data to 2019 and observations to the end of 2018 including new ageing data from the RSTS ... with catch data to 2019 and observations to the end of 2018 including new ageing data from the RSTS ... , (3) updated growth parameters, (4) updated length-weight relationship parameters, (5) updated maturity-at-age ... surveys and extensive fish ageing to consolidate and estimate recent trends in YCS, the 2021 assessment ...
Meeting Document : WG-FSA-2019/32 : Author(s): P. Ziegler
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Patagonian toothfish in international waters of the Southwest Indian Ocean (Statistical Area 51)
80 to 150 cm TL for females. % F re qu en cy 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 ... 120 125 130 135 140 145 150 155 160 165 170 175 0 20 40 60 80 100 0 5 10 15 20 25 Ob-Lena ... 65 75 85 95 105 115 125 135 145 155 165 175 0% 20% 40% 60% 80% 100% Males Females TL (cm ... ) Females Males S ex ra tio (% ) 100 80 60 40 20 0 45 55 65 75 ... (Statistical Area 51) Abstract / Description: Experimental fishing for Patagonian toothfish (Dissostichus ...
Science Journal Paper : CCAMLR Science, Volume 12 (CCAMLR Science, Volume 12) : 207–214 : Author(s): López Abellán, L.J