Image analysis as a tool to age estimations in fishes: An approach using blue whiting on ImageJ

Patrícia Gonçalves, Vitor Vaz da Silva, Alberto G. Murta, António Ávila de Melo, Henrique N. Cabral

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Otoliths are the fish bones that allow it to hear sounds and achieve balance. The otolith grows in size as fish grows; ring bands are formed in the otoliths’ surface registering periods of rapid and slow growth, opaque bands appear alternating with translucent bands. Age classification was made considering the number of translucent rings in the otolith; one translucent ring was equivalent to one year. The modeling of fish species abundance on the majority of fisheries assessment use age based models. The task of ring counting and ageing is time consuming and may introduce errors that can have a strong impact in stock assessment results. Thus, accurate and precise age estimates are crucial for the effective management and understanding of fisheries resources because recruitment dynamics, growth and mortality estimates relies on these data. The main goal of this study is to produce automatic reading procedures to help researchers, ageing blue whiting fish, minimize ring error count and improve accuracy and precision on age estimation.

Original languageEnglish
Title of host publicationTechnological Innovation for Smart Systems - 8th IFIP WG 5.5/SOCOLNET Advanced Doctoral Conference on Computing, Electrical and Industrial Systems, DoCEIS 2017, Proceedings
EditorsLuis M. Camarinha-Matos, Mafalda Parreira-Rocha, Javaneh Ramezani
PublisherSpringer New York LLC
Pages167-174
Number of pages8
ISBN (Print)9783319560762
DOIs
Publication statusPublished - 1 Jan 2017
Event8th IFIP WG 5.5/SOCOLNET Advanced Doctoral Conference on Computing, Electrical and Industrial Systems, DoCEIS 2017 - Costa De Caparica, Portugal
Duration: 3 May 20175 May 2017

Publication series

NameIFIP Advances in Information and Communication Technology
Volume499
ISSN (Print)1868-4238

Conference

Conference8th IFIP WG 5.5/SOCOLNET Advanced Doctoral Conference on Computing, Electrical and Industrial Systems, DoCEIS 2017
CountryPortugal
CityCosta De Caparica
Period3/05/175/05/17

Keywords

  • Blue whiting and fisheries science
  • Fish ageing
  • Image analysis
  • Image processing
  • Otoliths

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    Gonçalves, P., da Silva, V. V., Murta, A. G., de Melo, A. Á., & Cabral, H. N. (2017). Image analysis as a tool to age estimations in fishes: An approach using blue whiting on ImageJ. In L. M. Camarinha-Matos, M. Parreira-Rocha, & J. Ramezani (Eds.), Technological Innovation for Smart Systems - 8th IFIP WG 5.5/SOCOLNET Advanced Doctoral Conference on Computing, Electrical and Industrial Systems, DoCEIS 2017, Proceedings (pp. 167-174). (IFIP Advances in Information and Communication Technology; Vol. 499). Springer New York LLC. https://doi.org/10.1007/978-3-319-56077-9_15