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SSA could not be possible without the generous support of Drs. Herbert A. and Betty Lou Lubs and the Science, Society, and the Arts Research Conference Endowment. We are deeply grateful!
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Friday, March 17 • 3:00pm - 4:15pm
Easel 01: Is the crayfish species Orconectes ozarkae native or introduced to the James River Basin in Virginia?

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Previous work in our lab has identified the presence of Orconectes ozarkae in the James River basin. This species was previously only documented in the Ozarks of Missouri and Arkansas. This raises the question of whether this species is native or introduced in Virginia. We extensively sampled sites in Virginia and the Ozark region to determine whether this species is introduced or native. This has been accomplished via sequencing and comparison of the COI and NAD2 genes. Our work suggests the identification of this species as introduced, which may indicate the need for control or extirpation strategies. We have also aimed to determine the geographical origin of Orconectes ozarkae, for which we have a preliminary hypothesis. Ultimately, the findings will allow for furthering of the taxonomic relationships among different crayfish species and improve existing databases containing this information, while providing the necessary knowledge to manage the health of freshwater ecosystems.

Friday March 17, 2017 3:00pm - 4:15pm
Leyburn Library