catch-at-age


catch-at-age
the estimated number of fish caught, tabulated by fish age and year of capture, and by other factors such as gear or nation. Catch-at-age may be estimated on the basis of catch-at-size, using age-length keys or cohort slicing

Dictionary of ichthyology. 2009.

Look at other dictionaries:

  • catch-at-age data — Data on the number of fish of each age group in the catch of a fishery, usually derived from the lengths of fish in representative samples of the catch …   Fisheries — dictionary

  • age-slicing — cohort slicing (a method used to assign ages to fish, given length measurements, e.g. used to convert catch at size data into catch at age data before the application of age structured assessment models. Cohort slicing assumes that there is a one …   Dictionary of ichthyology

  • age-length key — a method of assigning ages to fish, given length measurements. Used to convert catch at size data into catch at age data. The keys specify the probability that fish of a given size belong to one of several age groups …   Dictionary of ichthyology

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  • Age requirements in gymnastics — The age requirements in gymnastics are established by the Fédération Internationale de Gymnastique and regulate the age at which athletes are allowed to participate in senior level competitions.History of age requirements in artistic… …   Wikipedia

  • catch composition — the fish species, age, size, numbers, etc. in a catch …   Dictionary of ichthyology


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