Successful Merger of Butterfly Species

Posted by ryuzaki0 on Monday June 19, 2006 @06:26AM from the better-to-create-chaotic-futures dept.

Roland Piquepaille writes "Researchers from the Smithsonian Tropical Research Institute (STRI) have recreated a real butterfly in the lab by crossing two other species of butterflies. This phenomenon, which is quite rare, is known as hybrid speciation. What is more surprising is that the hybrid butterfly has been created in just three generations of lab crosses. And BBC News tells us that the new butterfly species is a viable one, with its specific wing patterns which "make them undesirable as mates for members of their parent species." In fact, this hybridization, which occurred without any changes to the chromosome number, could mean that it is an important factor in the origin of new animal species. Read more for many additional references and a comparison of wing patterns between hybrids and wild butterflies."

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Re:Why this is important ... by enitime · 2006-06-19 07:42 · Score: 4, Insightful

"Hmm. I thought that if the offspring weren't sterile, then the parents aren't different species -- they are, instead, subspecies. I'm sure there's some grey area in the definition, any geneticists care to help out?"

Not only a gray area, there is no real definition of species. The consensus seems to be something along the lines of "distinct population groups that generally don't interbreed". Not that they can't, not that they don't, just that they usually don't.
For example, I seem to recall that all (or maybe just most) of the members of the Canidae family (That's dogs, wolves, foxes, jackals etc.) can interbreed. I don't remember exactly though... it could have just been the Canis genus (dogs, wolves, jackals), or maybe I'm just mistaken. Anyone else know?