The effects of ultraviolet light on rainbow trout embryos
Beth Shedden, Department of Ecology, Montana State University, Bozeman, Montana 59717 beth.
Jackson A. Gross and Robert E. Gresswell, U.S. Geological Survey, Northern Rocky Mountain
Science Center, Montana State University, Bozeman, Montana 59717 email@example.com,
Molly Webb, USDI Fish and Wildlife Service, Bozeman, Montana 59715 Molly_Webb@fws.gov
There currently exists a need to develop new approaches to control aquatic invasive
and nuisance species. The effects of light radiation such as ultra-violet wavelengths of
light have shown negative effects, such as increased embryo mortality in early embryonic
salmonid larvae. This study explores the use of light radiation for eradication of invasive fish.
Experiments were conducted to evaluate dose and critical period of sensitivity for mortality
of rainbow trout (Oncorhynchus mykiss) embryos after exposure to visual and ultra-violet
light radiation. Endpoints recorded include exposure intensity, effective distance from source,
duration of exposure, malformations and mortality. Introduced light may be an effective and
feasible eradication technique of early life history stages of fish and invertebrate invasive
species in situ, as light can be implemented and removed with minimal environmental impact.