Age and growth of Antimora rostrata (Moridae, Gadiformes, Teleostei) from the Kerguelen and Crozet Islands in the southern Indian Ocean

Abstract Age and growth of blue antimora Antimora rostrata were examined for the first time in the waters of Kerguelen and Crozet Islands (southern Indian Ocean, sub-Antarctic). The longline catches were represented by fish ranging from 39 to 72 cm in total length with weights between 400 and 3310 g...

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Bibliographic Details
Published in:Polar Record
Main Authors: Korostelev, Nikolai B., Vedishcheva, Elena V., Orlov, Alexei M.
Format: Article in Journal/Newspaper
Language:English
Published: Cambridge University Press (CUP) 2019
Subjects:
General Earth and Planetary Sciences
Ecology
Geography, Planning and Development
Antarctic
The Antarctic
Kerguelen
Greenland
Indian
Weddell
Lazarev
Antarc*
Crozet Islands
Polar Record
Online Access:http://dx.doi.org/10.1017/s0032247420000157
https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0032247420000157
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Summary:Abstract Age and growth of blue antimora Antimora rostrata were examined for the first time in the waters of Kerguelen and Crozet Islands (southern Indian Ocean, sub-Antarctic). The longline catches were represented by fish ranging from 39 to 72 cm in total length with weights between 400 and 3310 g, aged 16– 41 years. A minimum age of 16 years was observed in a fish 39 cm long, while a maximum age of 41 years was recorded for an individual of 70 cm in length and 3310 g in weight. The age classes with the greatest numbers were represented by fish aged 34 years (9%), 28 years (9%) and 29 years (8%), which together accounted for 26% of the total catch. The blue antimora in the southern Indian Ocean shows similar growth rates to those of individual fish from the Ross, Lazarev and Weddell Seas and southeastern Greenland, which may indicate the population unity of the species within the Antarctic and sub-Antarctic waters or similar habitat conditions in these areas.

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