Combined analysis of length and age-at-length data

I. Martin, R. M. Cook

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)


Age—length-key and length-frequency analysis are well-known methods for estimating the proportion of fish at each age in a sample and the associated mean length and standard deviation of length at age. In this paper a combined age—length analysis (CALA) is described which fits a statistical model to both the age and length data. Monte Carlo testing of the methods indicates that the CALA method provides more precise estimates of the parameters than conventional age-length-key methods.
Original languageEnglish
Pages (from-to)178-186
Number of pages9
JournalJournal du Conseil - Conseil International pour l'Exploration de la Mer
Issue number2
Publication statusPublished - 1 Dec 1990


  • age—length-key
  • length-frequency analysis
  • statistical model
  • monte carlo method


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