Author: Adam M Frankiewicz,  Biological Taxonomist (NRRI and BTS)

Description:
Sphaeriidae, commonly called fingernail, pea or pill clams, are the smallest freshwater bivalves in North America with adult shell lengths ranging from 2 to 25 mm. Out of the 38 known species found in North America, 35 are found in the Great Lake Region, but despite this rich diversity Sphaeriidae biological and ecological role are poorly understand. This is mainly due to the difficulty that even skill taxonomist have in identifying Sphaeriidae to species and even genus level taxonomy. Current keys available on identifying Sphaeriidae are few, outdated, containing conflicting information, have few instructional illustrations, or are intended for taxonomists with experiences in freshwater bivalve taxonomy. The goal of my research project is to create an up-dated key that is accessible and educational to taxonomists of various skill levels, this key will incorporate up-to-date literature, DNA comparison between the different species, photographic and illustrated key, and 3D-modeling. To date, 3405 specimen have been collected from a 185 sites in the Great Lake Region. Specimens have been identified using the latest taxonomic keys, with identifications verified by Sphaeriidae expert Dr. Gerald Mackie. In addition, 319 specimens have been sent to Central Michigan University for DNA barcoding. The DNA data will be used to compare the different species and different population. This project is being supported by Natural Resource Research Institute, University of Minnesota Duluth, US Environmental Protection Agency Mid-Continent Ecology Division, and Central Michigan University.

Category: Scientific Program Abstract > Special Session > CS24 Biodiversity