Search results
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Variation in echosounder calibration with temperature and some possible implications for acoustic surveys of krill biomass
detected at both 38 and 120 kHz between calibrations conducted at the two locations. At 120 kHz, required ... detected at both 38 and 120 kHz between calibrations conducted at the two locations. At 120 kHz, required ...
Meeting Document : WG-EMM-97/52 : Author(s): Watkins, J.L., Woodroffe, P., Brierley, A.S., Goss, C.
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Age and Length Growth of Champsocephalus gunnari, Lonnberg 1905 (Pisces, Chaenichthyidae, in the Area of Elephant Island, West Zone, Antarctica
Abstract: In order to extend the knowledge on the age and growth of antarctic fishes, the authors ... to the Chaenichthyidae family, Champsocephalus gunnari. The age determination of this species, was made using the otolith ... fine cutting technique. Through the reading of the growth rings the age classes corresponding to3 ... )] Author(s): A.P. Tomo and E. Barrera-Oro (Argentina) Title: Age and Length Growth of Champsocephalus ...
Meeting Document : WG-FSA-85/11 : Author(s): A.P. Tomo and E. Barrera-Oro (Argentina)
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LENGTH AND AGE AT SPAWNING OF ANTARCTIC TOOTHFISH DISSOSTICHUS MAWSONI IN THE ROSS SEA
Abstract: This study uses a histological assessment of age and length at spawning for female ... remnants of previous spawning) yielded similar results. The age at 50% spawning for females on the Ross Sea ... . Males are estimated to spawn at a younger age; 12.8 yr (range 11.9–14.0) or 120.4 cm (range 114.8–126.7 ... difference between male and female ogives. Comparison of the spawning age distribution on the slope ...
Meeting Document : WG-FSA-09/37 : Author(s): S.J. Parker and P.J. Grimes (New Zealand)
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Review of the use of survey data and length-at-age models in the assessment of Dissostichus eleginoides in the vicinity of Heard Island and McDonald Islands (Division 58.5.2)
year such as could be derived through an age length key, and the selectivity of the gear used ... at age, an independent estimate of relative abundance of cohorts present in any survey year such as could ... examines how the latest length-at-age model for Dissostichus eleginoides (Patagonian toothfish) in 58.5.2 ... the reassignment of hauls and the latest estimates of length at age, but quality of model fit and estimates ...
Meeting Document : WG-FSA-06/44 Rev. 1 : Author(s): D.C. Welsford, A.J. Constable and G.B. Nowara (Australia)
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Review of the use of survey data and length-at-age models in the assessment of Dissostichus eleginoides in the vicinity of Heard Island and McDonald Islands (Division 58.5.2)
abundance of cohorts present in any survey year such as could be derived through an age length key ... in any survey year such as could be derived through an age length key, and vulnerability of the stock ... established in 2003. In addition, the sensitivity of the estimates of abundance to the latest length-at-age ... assignment of survey data to the 2003 stratification along with the latest estimates of length at age ...
Meeting Document : WG-FSA-SAM-06/15 : Author(s): D.C. Welsford, A.J. Constable and G.B. Nowara (Australia)
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Contribution to knowledge on age and growth of Antarctic toothfish (Dissostichus mawsoni) from Division 58.4.1
Abstract: A summary of progress made regarding the ageing and growth studies for Dissostichus ... and the interpretation criteria applied on age estimation, as well as the age-length key and growth parameters estimates ... by sex. Growth parameters obtained using length-age pair values are: L ∞: 154.4, k: 0.1399 and t 0: 1.321 ... : Contribution to knowledge on age and growth of Antarctic toothfish (Dissostichus mawsoni) from Division 58.4.1 ...
Meeting Document : WG-FSA-15/06 : Author(s): L.J. López-Abellán, M.T.G. Santamaría, R. Sarralde and S. Barreiro (Spain)
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DEVELOPMENT OF SPATIALLY EXPLICIT AGE-STRUCTURED POPULATION DYNAMICS OPERATING MODELS FOR ANTARCTIC TOOTHFISH IN THE ROSS SEA
Abstract: We present developments towards spatially explicit age-structured population dynamics ... -space model that represents a cohort-based population age structure in a spatially explicit manner ... . Models can be parameterised by both population processes (i.e., ageing, recruitment, and mortality ... on known attributes of spatial location. The operating models considered were single sex age-structured ...
Meeting Document : WG-SAM-09/18 : Author(s): A. Dunn, S. Rasmussen and S. Hanchet (New Zealand)
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Update of ongoing work on age and growth of Antarctic toothfish (Dissostichus mawsoni) (2013-14 season) from Division 58.4.1 by Spain
Abstract: We present preliminary results on age and growth of Dissostichus mawsoni for the second ... on otolith readings. It is included the age-length key and growth parameters estimates by sex. Growth ... parameters obtained using length-age pair values are: L ∞: 175.7, k: 0.1078 and t 0: 1.528 for females ... . Santamaría, R. Sarralde and S. Barreiro Title: Update of ongoing work on age and growth of Antarctic ...
Meeting Document : WG-FSA-16/58 : Author(s): L.J. López-Abellán, M.T.G. Santamaría, R. Sarralde and S. Barreiro
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A proposal for a Krill Ageing Inter-laboratory Calibration Workshop
Abstract: The Working Group stressed the urgency of standardising ageing method for krill ... . Information on krill age is fundamental to establishing an accurate growth curve and to calculate ... to standardise krill ageing protocol, as outlined in WG-EMM-19/45. We seek Scientific Committee’s endorsement ... of the draft terms of reference and the budget for the Krill Ageing workshop as described in this paper. Author ...
Meeting Document : SC-CAMLR-38/13 : Author(s): Delegations of Australia, China, Japan, Norway and the USA
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Revisiting krill ageing method using eyestalk cuticles
Abstract: The development of a consistent and reproducible ageing method for krill is critical ... in the determination of the absolute age of krill is that of Kilada et al. (2017), which involves thin sectioning ... , and using known age krill. Author(s): S. Kawaguchi, T. Barnes, N. Waller, B. Farmer, D. Hayes, R. Kilada ... , C. Reiss, G. Zhu, B. Krafft, A.-L. Agnalt, T. Ichii and T. Matsuda Title: Revisiting krill ageing method ...
Meeting Document : WG-EMM-2019/45 : Author(s): S. Kawaguchi, T. Barnes, N. Waller, B. Farmer, D. Hayes, R. Kilada, C. Reiss, G. Zhu, B. Krafft, A.-L. Agnalt, T. Ichii and T. Matsuda