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GLIN==> Seminar - June 30 (Ann Arbor)
- Subject: GLIN==> Seminar - June 30 (Ann Arbor)
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- Date: Thu, 19 Jun 2003 12:02:02 -0400
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NOAA GREAT LAKES SEMINAR SERIES
Monday, June 30, 2003
"Report of an Invasion: Limnoperna fortunei (Dunker, 1857),
or Golden Mussel, in South America"
Dr. Gustavo Darrigran
Facultad de Ciencias Naturales y Museo
Paseo del Bosque - La Plata (1900)
GLERL Main Conference Room
2205 Commonwealth Blvd.
Ann Arbor, MI 48105
Darrigran and Pastorino (1995) proposed that the golden mussel, Limnoperna
fortunei was unintentionally introduced unintentionally into America
in 1991 through ballast waters of ocean vessels. The quick expansion of golden
mussel distribution into inland waters of South America has caused significant
changes in natural and human environments. L. fortunei is provoking
a new economic/environmental impact in South American freshwaters: macrofouling.
It attaches to every natural hard substrate available (from trunks and aquatic
plants to compact silt-sand), or to artificial ones (docks, tubes, walls,
etc.). The combination of early sexual maturity, high fecundity, semelparity
and wide environmental toleration allows L. fortunei to be transported
and easily introduced into new environments. The impacts caused by this species
can be similar to the impacts caused by the invasive bivalve species Dreissena
polymorpha in the Northern Hemisphere. The probabilities of invasion
of North America by L. fortunei will be greater than they were for
South America. South America was at risk only from vessels coming from southeast
Asia, while North America is at risk from vessels acting as potential vectors
for L. fortunei directly from southeast Asia, as well as from South
America. Likewise, the probabilities of invasion of South America by D.
polymorpha would be greater than those of North America. All this gives
great importance to research conducted on the golden mussel in South America.
In Argentina, in La Plata University, we are working on different topics
of its biology and on control bioassays.
For more information, contact:
Tom Nalepa (NOAA/GLERL)
David F. Reid, Ph.D.
U.S. Department of Commerce
National Oceanic and Atmospheric Administration
Great Lakes Environmental Research Laboratory
2205 Commonwealth Blvd.
Ann Arbor, MI 48105-2945
GLERL home page: