Macroevolution - An experimentally created incipient species of Drosophila

I read that in a controlled experiment scientists observed the emergence of a new fly above the species level. I saw the following reference.Dobzhansky, Th., and O. Pavlovsky, 1971. An experimentally
created incipient species of Drosophila, Nature 23 :
289-292Does anyone know of this? What actually happened?

Thread moved here from the Proposed New Topics forum.

That reference is wrong somehow - the volume number should be in the 200's somewhere for Nature in the 1970's. I'll root around a little - but the paper won't be online at Nature's site.Found something..... but not much.
It's volume 230. Neither PubMed nor Nature has even an abstract that I can access.This message has been edited by Coragyps, 08-30-2004 11:14 AM

quote:

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5.3.1 Drosophila paulistorum
Dobzhansky and Pavlovsky (1971) reported a speciation event that occurred in a laboratory culture of Drosophila paulistorum sometime between 1958 and 1963. The culture was descended from a single inseminated female that was captured in the Llanos of Colombia. In 1958 this strain produced fertile hybrids when crossed with conspecifics of different strains from Orinocan. From 1963 onward crosses with Orinocan strains produced only sterile males. Initially no assortative mating or behavioral isolation was seen between the Llanos strain and the Orinocan strains. Later on Dobzhansky produced assortative mating (Dobzhansky 1972).

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From Talk.origins:Observed Instances of SpeciationKC