Update of ongoing work on age and growth of Antarctic toothfish (Dissostichus mawsoni) (2013-14 season) from Division 58.4.1 by Spain

Preliminary Age-length key by reading otoliths of antarctic toothfish (Dissostichus mawsoni) We present preliminary results on age and growth of Dissostichus mawsoni for the second season (2013/14) of the Spanish research fishing in the 58.4.1 Division obtained for growth rings on otolith readings....

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Bibliographic Details
Main Authors: López-Abellán, Luis José, Santamaría, María Teresa García, Sarralde-Vizuete, Roberto, Barreiro-Jueguen, Santiago
Format: Report
Language:English
Published: 2016
Subjects:
Toothfish
Centro Oceanográfico de Canarias
Pesquerías
Growth
otoliths
58.4.1
CCAMLR
Longline
ALK
Antarctic
Antarctic Ocean
Indian
Ross Sea
Wilkes Land
Antarc*
Antarctic Toothfish
Online Access:http://hdl.handle.net/10508/10355
http://hdl.handle.net/10261/325121
Description
Summary:Preliminary Age-length key by reading otoliths of antarctic toothfish (Dissostichus mawsoni) We present preliminary results on age and growth of Dissostichus mawsoni for the second 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 parameters obtained using length-age pair values are: L∞: 175.7, k: 0.1078 and t0: 1.528 for females; L∞: 150.3, k: 0.1491 and t0: 1.809 for males; and L∞: 169.8, k: 0.1087 and t0: 1.168 all combined. These results are very similar to those reported previously for the first season (2012/13) although they differ slightly with the values used in the Ross sea assessment for males.

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