You are not currently logged in.
Access your personal account or get JSTOR access through your library or other institution:
If You Use a Screen ReaderThis content is available through Read Online (Free) program, which relies on page scans. Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
Altered Mating Behavior in a Carsonian Populations of Drosophila sechellia
Matthew Cobb, Barrie Burnet, Robert Blizard and Jean-Marc Jallon
Vol. 44, No. 8 (Dec., 1990), pp. 2057-2068
Published by: Society for the Study of Evolution
Stable URL: http://www.jstor.org/stable/2409615
Page Count: 12
Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
Preview not available
Mating behavior was studied in two laboratory populations of Drosophila sechellia and their reciprocal hybrids. The ancestral population was reared on a special medium, optimal for this species, while the derived population was reared on a standard Drosophila food, and underwent a bottleneck while adapting to this new medium, in a manner similar to the "founder-flush" process of Carson (1971). A significant tendency towards mating asymmetry was found, with ancestral females mating significantly less frequently with derived males than derived females with ancestral males. Analysis of hybrids suggested an important role for the male's X chromosome or for a maternal effect. No significant differences were found among parental types for their main female cuticular hydrocarbons, the proportion of courtship spent in various behavioral elements, body weight, or wing length. Significant differences were found in the structure of courtship, male locomotor activity, male cuticular hydrocarbon levels, and male courtship song inter-pulse interval (i.p.i.). None of these differences showed an X-linked effect in the reciprocal hybrids. Hypotheses put forward to explain interspecific mating asymmetries are discussed in the light of these results.
Evolution © 1990 Society for the Study of Evolution