Abstract
Life tables were developed for the armoured scale insects Hemiberlesia rapax (Comstock) and Hemiberlesia lataniae (Signoret), reared under orchard conditions without natural enemy mortality on the wood of two experimental and two commercial kiwifruit genotypes (Actinidia spp.). One commercial genotype, ‘Hort16A’, did not support the survival of H. lataniae. One experimental genotype was substantially resistant to H. lataniae, which showed low survival, fecundity, intrinsic rate of increase, and net reproductive rate when developing on it. H. lataniae showed high rates of survival and fecundity on the other two genotypes. Rate of development and generation time did not vary significantly amongst the three Actinidia genotypes that supported H. lataniae development. H. rapax had good survival and reproduction on all four Actinidia genotypes. Key characteristics of Actinidia resistance to scale insects are low crawler settlement and slow insect growth rate. These characteristics are important in the design of routine screening of Actinidia selections for resistance to armoured scale insects.
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