Telemetry and reproductive data for Lake Trout in Yellowstone Lake, 2011-2016
Dates
Publication Date
2019-09-03
Start Date
2011
End Date
2016
Citation
Gresswell, R.E., Heredia, N.A., and Sandstrom, P.T., 2019, Telemetry and reproductive data for Lake Trout in Yellowstone Lake, 2011-2016: U.S. Geological Survey data release, https://doi.org/10.5066/P95LNXU7.
Summary
We initiated a project in 2011 to identify lake-wide movement patterns and spawning areas of invasive lake trout in Yellowstone Lake, WY. We implanted acoustic transmitters in lake trout and established a network of stationary telemetry receivers in Yellowstone Lake. Lake Trout tagged with acoustic transmitters (Vemco V - series) were tracked with stationary acoustic receivers (Vemco VR2W - 69 kHz) from 2011 to 2015. In 2015-2016, we assessed the lake trout maturation cycle and reproductive potential in Yellowstone Lake by sampling lake trout that had been captured in suppression nets and euthanized. A gonadal-somatic index (GSI) was developed to provide an initial index of the lake trout maturation cycle and gonadal development was [...]
Summary
We initiated a project in 2011 to identify lake-wide movement patterns and spawning areas of invasive lake trout in Yellowstone Lake, WY. We implanted acoustic transmitters in lake trout and established a network of stationary telemetry receivers in Yellowstone Lake. Lake Trout tagged with acoustic transmitters (Vemco V - series) were tracked with stationary acoustic receivers (Vemco VR2W - 69 kHz) from 2011 to 2015. In 2015-2016, we assessed the lake trout maturation cycle and reproductive potential in Yellowstone Lake by sampling lake trout that had been captured in suppression nets and euthanized. A gonadal-somatic index (GSI) was developed to provide an initial index of the lake trout maturation cycle and gonadal development was assessed by histological examination of reproductive tissue samples. These data were used to determine the frequency and pattern of spawning. In addition, a precise estimate of fecundity (mean individual and population) were estimated for egg masses removed from female lake trout. Any use of trade, firm, or product names is for descriptive purposes only and does not imply endorsement by the U.S. Government.
These data were used to gain understanding of movement patterns and the reproductive cycle of lake trout in Yellowstone Lake, WY, in order to support suppression of this invasive predator of native Yellowstone cutthroat trout.
