Speciation Via Disruptive Selection on Habitat Preference: Experimental Evidence

The experiments reported here extend an earlier exploratory experiment (Rice 1985) with two major improvements. First, the experimental treatments remain constant over the duration of the experiment. Second, a phenocopy technique (see below) replaces the supergene-marker system that was previously u...

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Bibliographic Details
Published in:The American naturalist 1988-06, Vol.131 (6), p.911-917
Main Authors: Rice, William R., Salt, George W.
Format: Article
Language:English
Subjects:
Animal ethology
Assortative mating
Biological and medical sciences
Diptera
Disruptive selection
Drosophila melanogaster
Drosophilidae
Fundamental and applied biological sciences. Psychology
General aspects
Habitat preferences
Notes and Comments
Protozoa. Invertebrata
Psychology. Psychoanalysis. Psychiatry
Speciation
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Summary:The experiments reported here extend an earlier exploratory experiment (Rice 1985) with two major improvements. First, the experimental treatments remain constant over the duration of the experiment. Second, a phenocopy technique (see below) replaces the supergene-marker system that was previously used to monitor both habitat preference and gene flow. Although the supergene technique provides a highly accurate measure of gene flow, it also prevents recombination between the X chromosomes of the two selected subpopulations, thereby artificially increasing the potential for the evolution or reproductive isolation via habitat specialization.
ISSN:0003-0147
1537-5323
DOI:10.1086/284831