2022 Early Hearing Detection & Intervention Virtual Conference
March 13 - 15, 2022
5/23/2019 | 9:45 AM - 10:00 AM | INVASION OF NON-NATIVE CRAYFISH FAXONIUS VIRILIS IN THE LOWER HENRYS FORK DRAINAGE, IDAHO | 253 AB
INVASION OF NON-NATIVE CRAYFISH FAXONIUS VIRILIS IN THE LOWER HENRYS FORK DRAINAGE, IDAHO
The objective of this study was to determine the presence and distribution of Faxonius virilis in the Henrys Fork drainage of the Snake River. Sampling was conducted at 30 total sites located in Henrys Fork River, Teton River, North Fork Teton River, South Fork Teton River and Moody Creek. We used baited minnow traps and kick nets to determine presence of virile crayfish. Absence was only reported if we unsuccessfully captured crayfish using kick nets because this technique is more effective. Virile crayfish were detected in all five streams; we did not collect any native crayfish in this study. Sites at the upstream extent of the sampling distribution did not have virile crayfish. This pattern suggest that virile crayfish are invading the drainage in an upstream direction. Presence of species of conservation concern (e.g. Yellowstone Cutthroat Trout, Bluehead Sucker, Western Pearlshell), as well as native crayfish, warrant additional research to determine the effect of virile crayfish on these species.
- Invertebrate
- Distribution
- Conservation
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Presenters/Authors
Peyton Shaw
(), Brigham Young Univeristy - Idaho, peytoncshaw@gmail.com;
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Nonfinancial -
Eric Larson
(), University of Illinois, erlarson@illinois.edu;
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Eric Billman
(), Brigham Young University - Idaho, billmane@byui.edu;
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