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Research Publications: UM-SG-RS-2006-21
Title:
Acute toxicity of 5% rotenone to northern snakeheads.Year:
2006Authors:
Lazur, A; Early, S; Jacobs, JMSource:
North American Journal of Fisheries Management 26 ( 3 ) : 628 - 630DOI:
10.1577/MO5-074.1Abstract:
The confirmation of northern snakeheads Channa argus caught by an angler in a private pond in Maryland resulted in significant media attention and generated numerous resources for risk identification and the development of action plans to prevent the introduction of this normative species into state waters. Rotenone was selected as an eradication option, and a bioassay was conducted with captured northern snakehead juveniles to determine toxicity and application dose. The lowest rotenone concentration evaluated, 0.075 mg of active ingredient per liter of water, resulted in 100% mortality within 1 h. Pond treatment was highly successful; 8 adult and 834 juvenile snakeheads were recovered. Study results show that northern snakeheads are susceptible to normal doses of rotenone and that standard pond treatment techniques are effective in eradicating this invasive species.Maryland Sea Grant Topic(s):
'Related Research Project(s)' link to details about research projects funded by Maryland Sea Grant that led to this publication. These details may include other impacts and accomplishments resulting from the research.
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Featured Fellow
Leone Yisrael is a cephalopod-loving scuba diver, cook, and loves to try new activities. She conducts genetic analysis and fieldwork at the Smithsonian Environmental Research Center through the Coastal Disease Ecology Lab.
Featured Research Project
Developing a habitat model for mysids, an important link in Chesapeake Bay food webs
Mysids are important mesozooplankton prey for many species of fish in Chesapeake Bay and are an important link in transferring energy from lower to upper trophic levels. Mysids also serve as biological vectors for benthic-pelagic coupling due to their diel vertical migration and omnivorous prey-switching behavior, which makes mysids important regulators of food web architecture. Despite their central role in coastal food webs, surprisingly little is known about mysid ecology and dynamics in Chesapeake Bay.
