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

• Main Authors: López-Abellán, L.J. (Luis José), Santamaría, M.T.G. (María Teresa García), Sarralde-Vizuete, R. (Roberto), Barreiro-Jueguen, S. (Santiago)
• Format: Report
• Language: English
• Published: Centro Oceanográfico de Canarias 2016
• Subjects: Toothfish; 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

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.