NANFA-L-- stonerollers

Dave Neely (rheopresbe at
Tue, 04 Oct 2005 11:19:26 -0500

hey Bruce,

...a small correction - the stoneroller picture isn't that confusing, just
seems that fish folks in the good old days (ie. Girard, Cope, Jordan,
Evermann, etc.) were more astute than most contemporary ichthyologists. Both
oligolepis and anomalum are composed of multiple distinct lineages, some of
which (michauxi, plumbeum, pullum, etc) are phenotypically distinct (the
reason some of them were named in the first place)! The several labs that
are working on this issue seem to be converging on a similar picture (righto


>Genetic analysis gives a confusing picture of population/species structure
>within and between anomalum and oligolepis, with phenotypic differences
>more irregular than makes easy sense too. This is based on work done in
>Rick Mayden's lab, both in Alabama and St. Louis, that I saw presented
>several years ago at an ASIH meeting. There are different species within
>this group, but the demarcations probably don't match traditional thinking
>as I understand it.
>--Bruce Stallsmith
>the sunny Tennessee
>Huntsville, AL, US of A
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