Bayesian estimation of von Bertalanffy growth parameters for gray triggerfish, Balistes capriscus, incorporating multiple readers and ageing structures

Details

• Journal Title:
  Canadian Journal of Fisheries and Aquatic Sciences
• Personal Author:
  Chamberlin, Derek W. ; Siders, Zachary A. ; Potts, Jennifer C. ; Rogers, Walter D. ; Taylor, Miaya A. ; Patterson, William F.
• NOAA Program & Office:
  NMFS (National Marine Fisheries Service) ; AFSC (Alaska Fisheries Science Center) ; CIMAS (Cooperative Institute for Marine and Atmospheric Studies) ; SEFSC (Southeast Fisheries Science Center)
• Description:
  Ageing error can significantly impact growth parameter estimates. However, ageing error is rarely considered as a source of uncertainty as growth is generally estimated from a single age reader's age estimates. Here, we developed a sex-specific Bayesian hierarchical formulation of the von Bertalanffy growth model (VBGM) to estimate gray triggerfish (Balistes capriscus) growth parameters from multiple (n = 3) reader age estimates derived from otolith opaque zone counts, a new dorsal spine protocol, and the historical (old) dorsal spine protocol. For all three ageing protocols, estimates of length-at-age were significantly different between sexes, resulting in significantly higher estimates of L∞ for males compared to females. Estimates of the Brody growth coefficient (k) from both the otolith and new spine ageing protocols were significantly lower than the old spine protocol estimate. Study results provide a framework for comparing VBGMs, suggest it is most appropriate to fit sex-specific growth models for this species, and suggest stock assessments using ages estimated with the old spine ageing protocol would produce biased results.
• Source:
  Canadian Journal of Fisheries and Aquatic Sciences, 82, 1-12
• DOI:
  https://doi.org/10.1139/cjfas-2024-0315
• ISSN:
  0706-652X ; 1205-7533
• Format:
  PDF
• Publisher:
  Canadian Science Publishing
• Document Type:
  Journal Article
• Funding:
  Grant no. NA20NMF4410007 ; Grant no. NA21NMF4330501
• License:
  https://creativecommons.org/licenses/by/4.0/
• Rights Information:
  CC BY
• Compliance:
  Submitted
• Main Document Checksum:
  urn:sha-512:ed464e3648b5b45fe5216107097fbe1f8374493bb2a4f9dc66d07e40ec8a69e090397ac7180d66bc511a6255c20c2c53b9e0242fa871f2c4023a75e3c444979e
• Download URL:
  https://repository.library.noaa.gov/view/noaa/71040/noaa_71040_DS1.pdf
• File Type:
  [PDF - 1.45 MB ]