Re: NANFA-L-- NANFA ALERT: 2 new madtoms

matt ashton (ashtonmj2003-in-yahoo.com)
Sun, 11 Dec 2005 17:31:30 -0800 (PST)

Well I can give you a Chucky update. We-in-the TN Co-op Unit preformed a survey of tributaries of Little Chucky Creek as well as the mainstem where they have been collected and found zero. The tributaries origionally sounded promising because of locals telling of 'madtoms' being caught in minnow traps but they turned out to be bullheads. Not sure if anything is up for the future or if there is any money left in the project for next year.

I believe I had seen one of the Duck River madtoms this summer while mussel surveying after a small saddled madtom shot out from underneath a dead shell, although I am unaware of the exact range of this species and identification so it may or may not have been. It is a site we frequent though so I plan on keeping my eye out and having a dipnet handy.

Christopher Scharpf <ichthos-in-comcast.net> wrote:
Just published:

Two New Species of Noturus (Siluriformes: Ictaluridae) from the Tennessee
River Drainage: Description, Distribution, and Conservation Status

Brooks M. Burr, David J. Eisenhour, and James M. Gradyc

ABSTRACT

Nominotypical Noturus elegans are herein restricted to the Green River
drainage of central Kentucky and north-central Tennessee. Ten specimens and
additional new material from the Duck River originally allocated to N.
elegans are here described as a new species, Noturus fasciatus, restricted
to the Duck River system and two minor tributaries of the lower arm of the
Tennessee River, Tennessee. A second new species, Noturus crypticus, is
described from the only known extant population in Little Chucky Creek,
Greene County, Tennessee. These three taxa are closely related and are
distinguished on the basis of modal differences in anal-fin ray numbers,
body shape, pigmentation, and genotypic arrays. Noturus crypticus is
described from only eight specimens, is clearly uncommon, probably relict,
and in need of federal protection and future propagation efforts. All three
species are primarily riffle/glide dwellers in small- to medium-sized
streams where they may be found in or under gravel, rubble, and slab rock.
The limited geographic distributions of the two new species places them at
greater risk of extinction, warranting comprehensive evaluation of their
life histories, demographic characteristics, recruitment rates, and nesting
requirements.

A full review and photos will appear in the Winter 2006 American Currents.

Chris Scharpf
Baltimore
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