Influence of prey availability on reproduction and prey consumption ofPhytoseiulus persimilis, Amblyseius californicusandMetaseiulus occidentalis(Acarina: Phytoseiidae)

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Abstract
As the level of prey availability was increased predators expressed corresponding increases in fecundity per reproductive period, in daily ovipositional rate, in total number of prey killed per reproductive period, in daily number of prey killed per reproductive period and in female:male sex ratio. The number of prey kills per predator egg produced initially increased with increasing prey availability but levelled off at higher levels of prey availability. The total number of reproductive days also increased initially but then declined at the higher levels of prey availability.