Validation of the first annulus and growth model fit for the cardinalfish (Epigonus crassicaudus)

Guillermo Moyano, Francisco Cerna, Vilma Ojeda, Guido Plaza

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

Age and growth parameters were estimated for the deep-sea cardinalfish (Epigonus crassicaudus) from sagittal otoliths collected between 2012 and 2015 onboard commercial fishing vessels from the South-east Pacific off Chile between 33°04′S and 41°46′S. Von Bertalanffy growth parameters (VBGP) were estimated from assumed annual otolith growth zone counts. The verification of the first annulus of sagittal otoliths was determined by examining in detail daily micro-increments. These data helped inform the interpretation of the annual growth zones from transverse otolith sections. The von Bertalanffy growth model estimated to length-at-age data were asymptotic length (L∞) of 34.1 cm fork length (FL), a growth coefficient (k) of 0.1 cm/year and a t-zero (t0) of -0.85. The maximum ages observed were 67 and 65 years for female and male fish, respectively.

Original languageEnglish
Pages (from-to)963-968
Number of pages6
JournalJournal of the Marine Biological Association of the United Kingdom
Volume99
Issue number4
DOIs
StatePublished - 1 Jun 2019
Externally publishedYes

Keywords

  • Annulus
  • Chile
  • Epigonus crassicaudus
  • daily micro-increments
  • growth parameters
  • length-age data
  • otolith

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