Inbreeding depression in fecundity and inbred line extinction in the bulb mite, Rhizoglyphus robini

Research has been co0nducted on inbreeding depression in fecundity in bulb mite Rhizoglyphus robini. The author suggests that the lack of purging in inbreeding depression may indicate that this depression has been caused either by detrimental genes or by the breaking down of overdominant relations between alleles.