Assessment of the field performance of compound chromosome strains compared to laboratory-reared wild-type strains in Lucilia cuprina (Wiedemann) (Diptera: Calliphoridae)

Publisher： Cambridge University Press

E-ISSN： 1475-2670|75|2|233-244

ISSN： 0007-4853

Source： Bulletin of Entomological Research, Vol.75, Iss.2, 1985-06, pp. : 233-244

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Abstract

An assay based on recovery rates of released laboratory-reared flies was used to compare the field performance in Australia of a series of strains bearing compound chromosomes with that of wild-type strains of Lucilia cuprina (Wiedemann). The compound chromosome strains tested all performed less well than the wild-type strains. Four of the former were recovered on average 0·37 times as readily as the average wild-type strain, and one was recovered 0·65 times as readily. The compound chromosome strains differed in the selection pressure they had been exposed to in the field, which had selected among the various compound chromosomes in an original strain and in the extent to which their non-compound chromosomes had been replaced by recently collected field material. The strain that performed best had been exposed to the most severe selection pressure, overwintering in the field, and had had much of its non-compound genome replaced. Among the group of strains with similar performance, some had had their non-compound genome replaced with field genetic material.