Notes on age determination, size and age structure, longevity, and growth of co‐occurring macrourid fishes

Bergstad, O. A., Hunter, R. H., Cousins, N. J., Bailey, D. M. and Jørgensen, T. (2021) Notes on age determination, size and age structure, longevity, and growth of co‐occurring macrourid fishes. Journal of Fish Biology, 99(3), pp. 1032-1043. (doi: 10.1111/jfb.14801) (PMID:34021594)

[img] Text
242964.pdf - Published Version
Available under License Creative Commons Attribution Non-commercial No Derivatives.

7MB

Abstract

Nineteen species of the deepwater fish family Macrouridae inhabit the mid-Atlantic Ridge of the North Atlantic. Size and age structure, longevity, and length-at-age were explored for seven of the more abundant species: Coryphaenoides armatus, C. brevibarbis, C. carapinus, C. guentheri, C. mediterraneus, C. rupestris, and Macrourus berglax. The otoliths from these species had growth increments resembling those accepted as annuli in other deepwater species for which validation experiments have been conducted. Based on the counts of these growth increments, age estimates were derived as basis for studies of age structure, growth and longevity. All the species appeared to have relatively low growth rates, but the interspecific variation in longevity illustrates that there is a considerable variation within the family and amongst species inhabiting the same deep-sea environment. Most of the species likely complete full lifecycles on the mid-Atlantic Ridge, but it is probable that both the youngest and the largest-oldest individuals of some of the species were not sampled adequately.

Item Type:Articles
Additional Information:Funding: Data for this paper was collected on cruises funded by Norway and the United Kingdom (Natural Environment Research Council). In addition to institutional funding, the work benefited from a grant to the MAR-ECO Programme from the Alfred P. Sloan Foundation, New York, USA.
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Bailey, Dr David
Authors: Bergstad, O. A., Hunter, R. H., Cousins, N. J., Bailey, D. M., and Jørgensen, T.
College/School:College of Medical Veterinary and Life Sciences > School of Biodiversity, One Health & Veterinary Medicine
Journal Name:Journal of Fish Biology
Publisher:Wiley
ISSN:0022-1112
ISSN (Online):1095-8649
Published Online:22 May 2021
Copyright Holders:Copyright © 2021 The Authors
First Published:First published in Journal of Fish Biology 99(3): 1032-1043
Publisher Policy:Reproduced under a Creative Commons License

University Staff: Request a correction | Enlighten Editors: Update this record