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Re: NFC: Fw: salvinia notes
--- robertrice at juno_com wrote:
> a lil salvinia discussion I was having with the Jim
> WIlliams crowd
> ,,...thought the list members would like to see it
> and to let list
> members know We wont allow salvinia as an auction or
> trade item from now
I scanned this over too quickly until I got to the
letter below and thought it referred to Cichlasoma
Oh well, headspace adjustment time.
> Robert Rice NFC President
> Save those Fishes, Join the Native Fish Conservancy
> --------- Forwarded message ----------
> Hi Robert,
> Jim's got it, both members of the genus Salvinia,
> Salvinia molesta as
> as Salvinia minima (sometimes called Salvinia
> rotundifolia) are
> to North America.
> Our study enitled "The adventive status of Salvinia
> minima and S. molesta
> in the southern United States and the related
> distribution of the weevil
> Cyrtobagous salviniae" is due out in the June 2001
> issue of Castanea
> 66(2), authors C. Jacono, T. Davern and T. Center.
> We report the first
> collection of S. minima in North America from the
> St. Johns River, FL in
> 1930. We mapped the likely sites of its inroduction
> and its subsequent
> range expansion to the present. Through our field
> studies, we found the
> salvinia weevil, Cyrtobagous salviniae, occurring
> widely on S. minima in
> Florida but did not find it to be established in
> other states. The
> salvinia weevil was accidentally introduced to
> Florida before 1960. We
> believe that this weevil likely accounts for the
> reduced aggressiveness
> of S. minima in Florida as compared to its
> troublesome growth in Texas
> and Louisiana.
> However, it does not appear to be eliminating S.
> minima, at least to the
> extent that has been reported for S. molesta in
> Australia, South Africa
> and other countires.
> It's not really known why weevils transferred from
> Florida don't appear
> have much of an appetitie for S. molesta. Could be
> that the weevil in
> Florida is a bit different from that introduced as a
> biocontrol agent in
> other countries. Researchers at USDA-ARS are working
> on importing the
> salvinia weevil directly from Australia for
> experimentation on S. molesta
> in the US.
> hope this helps,
> Colette C. Jacono
> U.S. Geological Survey
> 7920 NW 71st St.
> Gainesville, FL 32653
> James D Williams
> 01/16/2001 09:15 PM
> To: robertrice at juno_com
> cc: Colette Jacono/BRD/USGS/DOI@USGS
> Subject: Re: final draft new flier
> Happy New Year! The new Flier looks great! - -
> however there is a
> factual error that should be corrected if its not
> too late. In the story
> "Exotic Problem" on page 4 - - there is no
> Salvinia native to the US.
> Turns out both species are introduced. You should
> contact Colette Jacono
> in our Lab for details as she has done most of the
> work on the Salvinia
> <>< <>< <>< <><
> <>< <>< <><
> James D. Williams
> U.S. Geological Survey
> Florida Caribbean Science Center
> 7920 NW 71st Street
> Subject: final draft new flier
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