Organic pellet decomposition induces mortality of Lake Trout embryos in Yellowstone Lake
October 18, 2019
Yellowstone Lake is the site of actions to suppress invasive Lake Trout Salvelinus namaycush and restore native Yellowstone Cutthroat Trout Oncorhynchus clarkii bouvieri and natural ecosystem function. Although gill netting is effective (Lake Trout λ ≤ 0.6 from 2012 through 2018), the effort costs more than US$2 million annually and only targets Lake Trout age 2 and older. To increase suppression efficiency, we developed an alternative method using organic (soy and wheat) pellets to increase mortality of Lake Trout embryos on spawning sites. Decomposition of pellets during two in situ experiments caused dissolved oxygen (DO) concentrations to temporarily decline to lethal levels (
Citation Information
| Publication Year | 2020 |
|---|---|
| Title | Organic pellet decomposition induces mortality of Lake Trout embryos in Yellowstone Lake |
| DOI | 10.1002/tafs.10208 |
| Authors | Todd M. Koel, Nathan A. Thomas, Christopher S. Guy, Philip D. Doepke, Drew J. MacDonald, Alex S. Poole, Wendy M. Sealey, Alexander V. Zale |
| Publication Type | Article |
| Publication Subtype | Journal Article |
| Series Title | Transactions of the American Fisheries Society |
| Index ID | 70227117 |
| Record Source | USGS Publications Warehouse |
| USGS Organization | Coop Res Unit Seattle; Northern Rocky Mountain Science Center |