spawning potential ratio


spawning potential ratio
the number of eggs that could be produced by an average recruit in a fished stock under a given regime divided by the number of eggs that could be produced by an average recruit in an unfished stock. This may also be expressed at the spawning stock biomass per recruit (SSB/R) of a fished stock divided by the SSB/R of the stock before it was fished. Abbreviated as SPR. Also called percentage maximum spawning potential or %MSP

Dictionary of ichthyology. 2009.

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  • maximum spawning potential — spawning potential ratio, q.v., or % MSP (the ratio of spawning potential per recruit under a given fishing regime relative to the spawning potential per recruit with no fishing) …   Dictionary of ichthyology

  • SPR — spawning potential ratio ( the number of eggs that could be produced by an average recruit in a fished stock under a given regime divided by the number of eggs that could be produced by an average recruit in an unfished stock. This may also be… …   Dictionary of ichthyology

  • MSP — abbreviation for maximum spawning potential of a fish stock (spawning potential ratio, q.v., or % MSP (the ratio of spawning potential per recruit under a given fishing regime relative to the spawning potential per recruit with no fishing)) …   Dictionary of ichthyology

  • Fmed — the fishing mortality rate corresponding to an equilibrium spawning potential ratio (SPR) equal to the inverse of the median observed survival ratio (ratio of recruits to parental spawning biomass). The level of F where recruitment in half of the …   Dictionary of ichthyology

  • FX% — the fishing mortality that will reduce the equilibrium spawning potential per recruit to X% of what it would be without any fishing. It is also the F that results in X% equilibrium spawning potential ratio. Also called FX%SPR or Fx%spr …   Dictionary of ichthyology

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