Search results
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Length- and age-at-spawning of Antarctic toothfish (Dissostichus mawsoni) in the Ross Sea
developmental stage in each histological section was recorded along with the mean maxi- mum viable oocyte ... diameter (mean of five largest oocytes (West, 1990)). Spawning status in the previous winter ... from the LPN stage takes two years, a continuous supply of CA-stage cells means spawning could occur ... - tribution for spawning fish. This was plotted along with the mean age-frequency distribution ... Paper Title: Length- and age-at-spawning of Antarctic toothfish (Dissostichus mawsoni) in the ... least a 6–12 month period, resulting in a developed group of oocytes accumulating at the final ... northern Ross Sea region depends on the proportion of the total population occurring in the northern Ross ... -at-spawning for female and male Antarctic toothfish (Dissostichus mawsoni) from fish sampled in the ...
Science Journal Paper : CCAMLR Science, Volume 17 (CCAMLR Science, Volume 17) : 53–73 : Author(s): Parker, S.J. and P.J. Grimes
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A comparison between otoliths and scales for use in estimating the age of Dissostichus eleginoides from South Georgia
considerably lower, leading to a more conservative management strategy. However the loss of wholesale value ... mean; z, is the effect of the ith level of the factor reading; bi is the effect of the jth level ... 0, and random error E,,,, were assumed to be independent, normally distributed random errors with mean ... significant using the conventional F-test, the individual means were tested using the Tukey Honestly ... Paper Title: A comparison between otoliths and scales for use in estimating the age of ... the two readers in estimating the age of D. eleginoides using otoliths and scales. File: 05ashford ... 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 ...
Science Journal Paper : CCAMLR Science, Volume 8 (CCAMLR Science, Volume 8) : 75–92 : Author(s): Ashford, J.R., S. Wischniowski, C. Jones, S. Bobko and I. Everson
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Revised research plan for the exploratory longline fishery for Dissostichus spp. in 2015/16 in Division 58.4.2
/2016 developed under Conservation Measure 41-01. The biomass in the Division was estimated during WG ... /2016 developed under Conservation Measure 41-01. The biomass in the Division was estimated during WG ...
Meeting Document : WG-FSA-15/74 : Author(s): A. Rélot-Stirnemann (France)
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Summer distribution, abundance and structure of krill populations (Euphausia superba and Euphausia crystallorophias) sampled by plankton net in the western Ross Sea (January–February 2000)
oblique tow. Mean relative biomass of Antarctic krill Euphausia superba, in the area north of Continental ... Shelf, was 9.4 (±18%) g/l000m3 of filtered water with a mean density of 11.0 (±16%) indviduals per ... in dominance in the High Antarctic Zone (south of 74°), with a mean relative biomass of 3.0 (±26%) g/l000m3 ... and mean density of 16.8 (±10%) individuals per 1000m3. The present data have demonstrated that in the Ross ...
Meeting Document : WG-EMM-00/38 : Author(s): M. Azzali, A. Sala and G. Brancato (Italy)
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Integrating Climate and Ecosystem Dynamics in the Southern Ocean (ICED) programme: a report on recent joint activities and links between ICED and CCAMLR
in decision making for conservation and management. This paper highlights recent ICED research and activities ... for conservation and management. This paper highlights recent ICED research and activities on Southern Ocean ...
Meeting Document : WG-EMM-2019/02 : Author(s): R.D. Cavanagh, N.M. Johnston and E.J. Murphy
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Revised research plan for the exploratory longline fishery for Dissostichus spp. in 2015/16 in Division 58.4.1
developed under Conservation Measure 41-01. The biomass in the Division was estimated by research block ... developed under Conservation Measure 41-01. The biomass in the Division was estimated by research block ...
Meeting Document : WG-FSA-15/73 : Author(s): A. Rélot-Stirnemann (France)
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PROPOSAL TO VARY THE REQUIREMENT TO TEST SINK RATES FOR INTEGRATED WEIGHT LONGLINE (IWL) GEAR PRIOR TO ENTERING THE CONVENTION AREA
, the requirement in Protocol C1 of Conservation Measure 24-02 to test the sink rate of integrated weight longlines ... in Protocol C1 of Conservation Measure 24-02 to test the sink rate of integrated weight longlines (IWL) before ...
Meeting Document : WG-FSA-08/36 : Author(s): I. Hay (Australia)
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Estimation of the green weight of krill caught
-EMM-13 and published in Conservation Measure 21-03 Annex B. Estimates of green weight and parameter ... -EMM-13 and published in Conservation Measure 21-03 Annex B. Estimates of green weight and parameter ...
Meeting Document : WG-EMM-14/29 : Author(s): Secretariat
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Variation in the distribution of Antarctic krill Euphausia superba around South Georgia
types with relatively simple biological characteristics: cluster 1 were medium-sized year 2+ krill (mean ... size 39.7 mm); cluster 2 were a mixture of year classes (mean size 37.7 mm); cluster 3 were large krill ... probably 3+ and older (mean size 49.5 mm); cluster 4 and 5 were small krill, mostly year 1 + either ... with or without some older size classes (mean sizes 27.2 and 24.5 mm respectively). Principle components analysis ...
Meeting Document : WG-EMM-97/47 : Author(s): Daly, H.I., Murray, A.W.A., Watkins, J.L.
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Depth distribution and spawning pattern of Dissostichus eleginoides over the winter period in Subarea 48.3
Abstract: Trends in mean length and maturity stage of toothfish were examined using observer data ... . A statistically significant pattern of changing mean length at depth with month was found in both 1997 and 1998 ... with a high mean length at depth are May and August, and with a low mean length at depth are April and July ... Trends in mean length and maturity stage of toothfish were examined using observer data from ...
Meeting Document : WG-FSA-98/58 : Author(s): D.J. Agnew, K. Kerkieta, L. Heaps, C. Jones, J. Pearce and A. Watson (United Kingdom)