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The Journal of Neuroscience, June 1, 1998, 18(11):4335-4343

Voila, a New Drosophila Courtship Variant that Affects the Nervous System: Behavioral, Neural, and Genetic Characterization

Maria Balakireva¹, Reinhard F. Stocker², Nanaë Gendre², and Jean-François Ferveur¹

¹ Unité de Recherche Associée Centre National de la Recherche Scientifique 1491, Université Paris-Sud, 91405 Orsay-Cedex, France, and ² Institute of Zoology, University of Fribourg, CH-1700 Fribourg, Switzerland

In Drosophila melanogaster, a specific PGAL4 transposon induces the Voila¹ genetic variant and produces multiple phenotypes. Homozygous Voila^1/1 flies rarely reach adulthood, whereas heterozygous Voila^1/+ adult males show strong bisexual behavior. Males with a single copy of Voila¹ driving the feminizing transgene UAS-transformer show very reduced sexual activity but no overall effect on their behavior. Voila¹ is specifically expressed in the nervous system. In the CNS, it is expressed mainly in the mushroom bodies and, to a lesser extent, in the antennal lobes. In the peripheral nervous system, GAL4 expression is almost entirely restricted to the gustatory sensilla. Using chromosomal deficiencies, the behavioral alteration was genetically mapped to the same location as the PGAL4 element (86E_1-2). The multiple behavioral effects of the Voila genetic variant are discussed in light of its expression in the nervous system and its genetic basis.

Key words: Drosophila; courtship behavior; PGAL4; gustation; mushroom bodies; transformer

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Copyright © 1998 Society for Neuroscience  0270-6474/98/18114335-09$05.00/0

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