Résultats de la recherche
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Age and Growth of Pseudochaenichthys georgianus Norman, 1937 (Channichthyidae) from the South Georgia Area
applied to find a model for the age estimation from measurable fish and otolith parameters. The following ... Abstract: Age was determined on the basis of growth microincrements in otoltihs. A calibration ... otolith sections and/or acetate replicas. Age ranged from 138 to 2116 days. A multiple regression was ... formula was obtained: Age (days) = 131.24 + 27416.4*Otolith weight (mg) Using this equation the age of 237 ...
Meeting Document : WG-FSA-88/21 : Auteur(s): T.B. Linkowski and R. Traczyk (Poland)
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Krill length and age at maturity
identical for krill. Comparisons with length at age data show that females mature in the third year of the ... calculate length and age at maturity for the Antarctic krill Euphausia superba. L50 values of 34.62 to 35.90 ... life cycle (age class 2 +), while males reach maturity in the fourth year as age class 3 +. Both sexes ... mm for female krill are the best estimates for the high spawning season. Males attain sexual maturity ...
Meeting Document : WG-KRILL-93/40 : Auteur(s): V. Siegel (Germany) and V. Loeb (USA)
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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 ... parameters obtained using length-age pair values are: L ∞: 175.7, k: 0.1078 and t 0: 1.528 for females; L ... season (2013/14) of the Spanish research fishing in the 58.4.1 Division obtained for growth rings on ... otolith readings. It is included the age-length key and growth parameters estimates by sex. Growth ...
Meeting Document : WG-FSA-16/58 : Auteur(s): L.J. López-Abellán, M.T.G. Santamaría, R. Sarralde and S. Barreiro
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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 for males; L ∞: 166.6, k: 0.1322 and t 0: 1.571 for females; and L ∞: 168.2, k ...
Meeting Document : WG-FSA-15/06 : Auteur(s): L.J. López-Abellán, M.T.G. Santamaría, R. Sarralde and S. Barreiro (Spain)
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Spatial distribution of Champsocephalus gunnari size and age are related with depth
detect associations between the sizes of Champsocephalus gunnari (also age classes), Gobionotothen ... eleginoides and depth of catch, as well as among C. gunnari age classes. Except D. eleginoides median sizes of ... . rossii and negatively for the remaining species. Less association with depth is observed in C. gunnari as ... catches of age I- present maximum difference with the older age classes at about 150 meters a result which ...
Meeting Document : WG-FSA-97/45 : Auteur(s): Marschoff, E.R., Serra, J.A., Gonzalez, B., Calcagno, J.
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Revision of the commercial catch at age of the Antarctic icefish Champsocephalus gunnari over the period 1976/77 to 1990/91
proposed that the revised catch at age be used for future assessment of the C. gunnari fishery at South ... Abstract: A revision of the calculation of total international catch at age of Champsocephalus ... gunnari over the period 1976/77 to 1990/91 is presented. This uses iterative application of two age length ... keys to obtain age distributions, according to a method described by Kimura and Chikuni (1987). It is ...
Meeting Document : WG-FSA-93/29 : Auteur(s): G.B. Parkes (United Kingdom)
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Verification of the CMIX procedure on species with known age-length keys
Subarea 26. Age-length keys for 1995-2001 and length frequency data obtained during the surveys carried ... Abstract: Calculation of age composition of density-at-length data produced during inventory ... the estimates of age composition proportions calculated using the CMIX method from those determined ... from age-length keys (ALK) computed based on the materials of direct age reading may be significant ...
Meeting Document : WG-FSA-SAM 03/5 : Auteur(s): P. Gasiukov (Russia)
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Update of ongoing work on age and growth of Antarctic toothfish (Dissostichus mawsoni) from Division 58.4.1 by Spain
Abstract: We present preliminary results on age and growth of Dissostichus mawsoni for the third ... length-age pair values are: L∞: 208.2, k: 0.074 and t0: 0.564 for females; L∞: 173, k: 0.089 and t0 ... season (2015/16) of the Spanish research fishing in the 58.4.1 Division obtained for growth rings on ... :-0.1771 for males; and L ∞: 226.4, k: 0.05673 and t 0:-0.745 all combined. Values differ with the previous ...
Meeting Document : WG-FSA-17/66 : Auteur(s): L.J. López-Abellán, M.T.G. Santamaría, R. Sarralde and S. Barreiro
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Information report on the age determination methods of toothfish Dissostichus spp.
collected in the CCAMLR Convention Area. The equipment used, the procedure for processing and reading age ... Abstract: The document presents the experience of the age determination of toothfish of the genus ... ways to solve them. Author(s): I.V. Slypko and P.M. Zabroda Title: Information report on the age ... Approved Delegation responsibility for releasing documents: Ukraine ...
Meeting Document : WG-SAM-18/29 : Auteur(s): I.V. Slypko and P.M. Zabroda
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Manual: estimating the age of Patagonian toothfish (Dissostichus eleginoides) using transverse cross-sections of otoliths
address recommendations for: the use of otoliths for estimating age; key features to be taken into account ... noted in the growth parameters being used for assessments of toothfish. To assess whether these ... conformity in estimating age of Patagonian toothfish (Dissostichus eleginoides). Arising from the workshop ... , the Center for Quantitative Fisheries Ecology at Old Dominion University has developed a manual to ...
Meeting Document : WG-FSA-10/15 : Auteur(s): K. Underkoffler, N. Ramanna and J. Ashford (USA)