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

Odd Aksel Bergstad* (Corresponding Author), Rebecca H Hunter, Nicola J Cousins, David M Bailey, Terje Jørgensen

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

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. This article is protected by copyright. All rights reserved. [Abstract copyright: This article is protected by copyright. All rights reserved.]
Original languageEnglish
JournalJournal of Fish Biology
Early online date7 Jun 2021
DOIs
Publication statusE-pub ahead of print - 7 Jun 2021

Keywords

  • Coryphaenoides
  • Deepwater
  • Macrourus
  • North Atlantic
  • life history
  • mid-Atlantic Ridge

Fingerprint

Dive into the research topics of 'Notes on age determination, size and age structure, longevity, and growth of co-occurring macrourid fishes'. Together they form a unique fingerprint.

Cite this