HR: 16:30h
AN: NB24C-05    [Abstracts]
TI: Ecological Role of the New Zealand Mudsnail in the Provo River, Utah
AU: * Peterson, E
EM: ep63@email.byu.edu
AF: Brigham Young University, Department of Integrative Biology, Provo, UT 84602 United States
AU: Shiozawa, D K
EM: shiozawa@byu.edu
AF: Brigham Young University, Department of Integrative Biology, Provo, UT 84602 United States
AU: Hatch, K
EM: kent_hatch@byu.edu
AF: Brigham Young University, Department of Integrative Biology, Provo, UT 84602 United States
AB: The invasive New Zealand mudsnail Potamopyrgus antipodarum has been found in the Provo River in central Utah. It does not yet dominate the benthos, but the ecological implications of its invasion are being monitored. Seven of the ecosystem's major benthic taxa, including the New Zealand mudsnail, were collected and analyzed for ¹⁵N and ¹³C levels. Measured nitrogen levels indicate similar trophic status among all taxa under study. The ¹³C levels, however, reflect differences in carbon sources among taxa. Samples from two taxa, the isopod Asellus and the gastropod Physella, suggest that some individuals are obtaining terrestrially derived carbon. This could be associated with individuals of the same taxon occupying different stream microhabitats. All P. antipodarum samples, however, indicate an aquatic carbon source.
DE: 9810 New fields (not classifiable under other headings)
SC: North American Benthological Society [NB]
MN: 2005 Joint Assembly