fishable stock
the part of a stock that is available to be fished, i.e. large enough to be caught and living in places accessible to fishing gear

Dictionary of ichthyology. 2009.

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  • stock — (verb)) to add eggs, young or adults of a species to a body of water to increase the population of that species or growth rate of that or another species; (noun) 1) a distinct genetic population; (noun) 2) a population defined by movement pattern …   Dictionary of ichthyology

  • recruit stock — the stock that each year is added to the portion of the fishable population …   Dictionary of ichthyology

  • F — 1) the fishing mortality rate in a particular stock. It is roughly the proportion of the fishable stock that is caught in a year and is derived mathematically from relations between the number of fish alive in a stock and the number of fish… …   Dictionary of ichthyology

  • surplus production — production of new weight by a fishable stock, plus recruits added to it, less what is removed by natural mortality. Usually estimated as the catch in a given year plus the increase in stock size or less the decrease (Ricker, 1975). As a stock is… …   Dictionary of ichthyology

  • biomass — the weight, volume or energy of living material in a given area, sample, fraction such as spawners, stock or for one or more given species (species biomass), or of all the species in a biotic community (community biomass). In fisheries the weight …   Dictionary of ichthyology

  • surplus production — Production of new weight by a fishable stock, plus recruits added to it, less what is removed by natural mortality. This is usually estimated as the catch in a given year plus the increase in stock size (or less the decrease). Also called:… …   Fisheries — dictionary

  • surplus production — Production of new weight by a fishable stock, plus recruits added to it, less what is removed by natural mortality. This is usually estimated as the catch in a given year plus the increase in stock size (or less the decrease). Also called:… …   Fisheries — dictionary

  • Y' — surplus production (production of new weight by a fishable stock, plus recruits added to it, less what is removed by natural mortality. Usually estimated as the catch in a given year plus the increase in stock size or less the decrease (Ricker,… …   Dictionary of ichthyology

  • age at recruitment — the age at which fish are recruited to a fishable stock …   Dictionary of ichthyology

  • exploitable age — any age of fish in a fishable stock …   Dictionary of ichthyology

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