RADIATION INDUCED RECIPROCAL TRANSLOCATIONS AND INVERSIONS INANOPHELES ALBIMANUS

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Abstract
Reciprocal translocations and inversions were induced in A. albimanus Wiedemann by irradiation of males with X rays. A total of 1669 sperm were assayed, and 175 new aberrations were identified as follows: 102 reciprocal translocations (67 autosomal and 35 sex-linked), 45 pericentric inversions and 28 paracentric inversions. Of the translocations, 11 were nearly whole-arm interchanges, and these were selected for the construction of capture systems for compound chromosomes. Two double-heterozygous translocation strains and 4 homozygous translocation strains were established. A. albimanus females were irradiated, and a pseudolinkage scheme involving mutant markers was employed to identify reciprocal translocations. The irradiation of females was very inefficient; only 1 translocation was recovered from 1080 ova tested.