NANFA-L-- Centrarchidae (sunfish, black bass, rock bass, crappie)

Thomas J. Near (
Wed, 10 May 2006 17:34:12 -0400

Hello NANFAites,

My collaborator Dan Bolnick (UT-Austin: and I are
developing a project to look-in-the genetics of speciation in
centrarchids. This involves measuring viability and fertility of first
and second generation hybrids between species, within and among genera.
The idea is to identify regions of the genome that contribute to the
decreased viability and fertility of hybrids.

We have been generating artificial crosses in the lab (love in a petri
dish!), but we are looking to interact with people who may have more
experience making centrarchid hybrids. That said, we are not advocates
of making hybrids and releasing in the wild for food or game purposes,
and none of our fish will ever be placed in natural habitats.

So if anyone out there has experience making such crosses, we would
love to hear from you. Also, we have recently published papers on the
relationships of centrarchids, the timing of centrarchid evolution
(based on the centrarchid fossil record), and a paper that examines the
relationship between hybrid inviability and evolutionary age. If you
are interested in getting PDFs of any of our papers, feel free to email
me directly (please don't request PDFs by responding to the list). My
email is listed below.

Best wishes,

Tom Near

Assistant Professor
Dept. Ecology and Evolutionary Biology
Yale University
New Haven, CT 06520
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