Inheritance of DDT Resistance in Culex pipiens fatigans Wiedemann1

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Three sets of reciprocal and backcross experiments were made to study the mode of inheritance of DDT resistance in C. p. fatigans. The resistant adults used in these 3 experiments were from 3 resistant colonies isolated from the field. The susceptible adults were from the Lamir reference colony. Results of all these experiments were strikingly similar, showing clearly that the resistance is almost completely dominant. The F2 d-m regression lines were straight, without any breaks and almost identical in slope to those of the F1. This fact indicated that the resistance is not due to a single principal gene. This hypothesis was supported further by the lack of visible segregation in the F1 X R backcross offspring. The results show that, in addition, some sort of maternal factor is also present in the inheritance of DDT resistance, shown by the higher resistance levels in the progeny of the reciprocal and backcrosses which inherited resistance through female parents.

Document Type: Research Article

Publication date: August 1, 1966

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  • Journal of Economic Entomology is published bimonthly in February, April, June, August, October, and December. The journal publishes articles on the economic significance of insects and is divided into the following sections: apiculture & social insects; arthropods in relation to plant disease; forum; insecticide resistance and resistance management; ecotoxicology; biological and microbial control; ecology and behavior; sampling and biostatistics; household and structural insects; medical entomology; molecular entomology; veterinary entomology; forest entomology; horticultural entomology; field and forage crops, and small grains; stored-product; commodity treatment and quarantine entomology; and plant resistance. In addition to research papers, Journal of Economic Entomology publishes Letters to the Editor, interpretive articles in a Forum section, Short Communications, Rapid Communications, and Book Reviews.
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