NANFA-L-- Cited for research assistance ("Gator" Scott / Thompson)....

Schlueter, Scott L LRB (
Thu, 29 Jun 2006 16:31:20 -0400

I just wanted to acknowledge Bruce Scott (IL) and James Thompson (WI) for
their participation in supplying bullheads to Penn State Unv. for mtDNA
research. You were both cited in a paper titled "Use of mtDNA to identify
Genetic Introgression among Related Species of Catfish" that appeared in the
Journal of Great Lakes Research. I have attached the abstract.

This is yet another positive example of the effectiveness of this listserv.
A friend of mine needed specimens, I posted it to the list, folks stepped up,
and it resulted in a significant contribution. Email me off-list if you are
interested in a copy. I apologize for this belated message.

Thanks guys!

-Scott Schlueter

Niagara River, NY

PS- One of the A. melas still resides in an aquarium (alive) as a bit of an
office mascot-in-PSU-Behrend College....


J. Great Lakes Res. 31(4):482-491.

Internat. Assoc. Great Lakes Res., 2005

Use of mtDNA to Identify Genetic Introgression among Related Species of


David W. Hunnicutt, John Cingolani and Margaret A. Voss, The

Pennsylvania State University-in-Erie, The Behrend College, School of

Science, Erie, Pennsylvania, 16563

ABSTRACT: Brown bullheads (Ameiurus nebulosus) are known to hybridize

naturally with closely related black (Ameiurus melas) and yellow

bullhead (Ameiurus natalis) species. The presence of hybrid specimens

may obscure accurate ecological and toxicological studies, which may in

turn influence evaluations of aquatic ecosystem health. Thus, there is a

need for a reliable method to detect introgression in bullheads from

tissue samples collected in the field. Specimens from each bullhead

species were identified using taxonomic keys and descriptions of

morphological characteristics. The morphological identifications were

compared with molecular characters from a 431 bp of mtDNA control region

sequences. The results identified a single possible A. melas x A.

nebulosus hybrid individual out of 11 fish identified as having A.

nebulosus morphology from Presque Isle Bay, Erie, PA. Four additional

fish revealed possible gene introgression from A. melas to A. nebulosus.

We suggest that future studies making toxicological and ecological

comparisons examine possible introgression within the bioindicator

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