[obol] Re: Coastal crossbills
- From: DJ Lauten and KACastelein <deweysage@xxxxxxxxxxxx>
- To: Wayne Hoffman <whoffman@xxxxxxxx>, "W. Douglas Robinson" <w.douglas.robinson@xxxxxxxxx>, obol@xxxxxxxxxxxxx
- Date: Fri, 19 Jan 2018 18:05:04 -0800
On 1/19/2018 5:51 PM, Wayne Hoffman wrote:
1. As Doug indicated, "It is hard to demonstrate assortative mating
in the field." However genetic studies have shown that in multiple
regions of North America, 2 or more types of crossbills coexist whose
genomes show evidence that they have not interbred with each other to
any great extent recently. This conclusion, originally reached by
Jeff Groth, was a big surprise. It was essentially data-driven,
rather than theory-driven science.
Ok, that's data, but that assumes the genetic studies are looking at the
"right" genes. And while the studies indicate they coexist, how
different are they compared to say all the subspecies of Song Sparrow?
And what does it mean?
Splitters and lumpers.........
Cheers
Dave Lauten
Other related posts:
