fishable stock
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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
