American eel resilience to simulated fluid shear associated with passage through hydroelectric turbines
Abstract
American eel (Anguilla rostrata) populations have declined within their native range along the eastern coast of North America due to factors such as commercial fishing, habitat alteration, and dams. American eel are catadromous fish species, and high mortality rates (>40%) have been observed for freshwater life-stage adult eel passing downstream through hydropower turbines. Lacerations and sectioning of fish have been observed downstream of turbines and these injuries are commonly associated with direct contact with the turbine runner, whether through blade strike or pinching and grinding. Exposure to fluid shear may also be a source of injury, however, little is known about American eel susceptibility to this physical stressor. Eels are considerably flexible when compared to other fish species and lack other morphological characteristics that would make them susceptible to fluid shear, such as protruding eyes, large scales, and large operculum. European eel, which have previously been tested for susceptibility to fluid shear, were found to be resilient. To determine if American eel are also resilient to fluid shear, forty American eel were exposed to a water jet, simulating severe fluid shear (strain rate > 800 s–1) that fish may experience when passing downstream through turbines. No immediate or delayed (48more »
- Publication Date:
- Research Org.:
- Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
- Sponsoring Org.:
- USDOE Office of Energy Efficiency and Renewable Energy (EERE), Renewable Power Office. Water Power Technologies Office
- OSTI Identifier:
- 1806295
- Report Number(s):
- PNNL-SA-158486
Journal ID: ISSN 1961-9502
- Grant/Contract Number:
- AC05-76RL01830
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Knowledge & Management of Aquatic Ecosystems
- Additional Journal Information:
- Journal Volume: 2021; Journal Issue: 422; Journal ID: ISSN 1961-9502
- Publisher:
- EDP Sciences
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 54 ENVIRONMENTAL SCIENCES
Citation Formats
Pflugrath, Brett D., Mueller, Robert P., Engbrecht, Kristin, and Colotelo, Alison H. A. American eel resilience to simulated fluid shear associated with passage through hydroelectric turbines. United States: N. p., 2021.
Web. doi:10.1051/kmae/2021017.
Pflugrath, Brett D., Mueller, Robert P., Engbrecht, Kristin, & Colotelo, Alison H. A. American eel resilience to simulated fluid shear associated with passage through hydroelectric turbines. United States. https://doi.org/10.1051/kmae/2021017
Pflugrath, Brett D., Mueller, Robert P., Engbrecht, Kristin, and Colotelo, Alison H. A. Fri .
"American eel resilience to simulated fluid shear associated with passage through hydroelectric turbines". United States. https://doi.org/10.1051/kmae/2021017. https://www.osti.gov/servlets/purl/1806295.
@article{osti_1806295,
title = {American eel resilience to simulated fluid shear associated with passage through hydroelectric turbines},
author = {Pflugrath, Brett D. and Mueller, Robert P. and Engbrecht, Kristin and Colotelo, Alison H. A.},
abstractNote = {American eel (Anguilla rostrata) populations have declined within their native range along the eastern coast of North America due to factors such as commercial fishing, habitat alteration, and dams. American eel are catadromous fish species, and high mortality rates (>40%) have been observed for freshwater life-stage adult eel passing downstream through hydropower turbines. Lacerations and sectioning of fish have been observed downstream of turbines and these injuries are commonly associated with direct contact with the turbine runner, whether through blade strike or pinching and grinding. Exposure to fluid shear may also be a source of injury, however, little is known about American eel susceptibility to this physical stressor. Eels are considerably flexible when compared to other fish species and lack other morphological characteristics that would make them susceptible to fluid shear, such as protruding eyes, large scales, and large operculum. European eel, which have previously been tested for susceptibility to fluid shear, were found to be resilient. To determine if American eel are also resilient to fluid shear, forty American eel were exposed to a water jet, simulating severe fluid shear (strain rate > 800 s–1) that fish may experience when passing downstream through turbines. No immediate or delayed (48 h) signs of injury were observed after exposure to severe fluid shear. Based on this study, and a previous study conducted on American eel susceptibility to barotrauma, the source of injury and mortality of American eel passing through turbines is likely attributed to blade strike or pinching and grinding.},
doi = {10.1051/kmae/2021017},
journal = {Knowledge & Management of Aquatic Ecosystems},
number = 422,
volume = 2021,
place = {United States},
year = {Fri May 28 00:00:00 EDT 2021},
month = {Fri May 28 00:00:00 EDT 2021}
}
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