Journal
ENVIRONMENTAL BIOLOGY OF FISHES
Volume 100, Issue 11, Pages 1427-1434Publisher
SPRINGER
DOI: 10.1007/s10641-017-0653-7
Keywords
Underwater light; Movement barrier; Guidance; Common carp; Brown bullhead; Largemouth bass
Categories
Funding
- Asian Carp Program at Fisheries and Oceans Canada
- Natural Sciences and Engineering Research Council (NSERC)
- DFO Asian Carp Program
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When dealing with invasive fishes, permanent barriers may be best in preventing spread; however, they may not be feasible due to various costs and/or logistical constraints. Alternatively, various non-permanent barriers using electricity, light, sound, pressure, bubbles, and CO2 are being developed and deployed in efforts to limit the spread of aquatic invasive species or to achieve fish guidance and conservation. However, the effectiveness of these barriers is quite variable, and testing is often lacking for both target and non-target species. We conducted a series of laboratory trials to examine the effects of strobe light on behaviour of Common Carp, Brown Bullhead, and Largemouth Bass. In response to strobe lights, Common Carp and Brown Bullhead stayed significantly farther away compared to the control period and resumed their normal activity once the strobe light was turned off. This suggests that strobe lights may prove to be a useful fish deterrent in the field. Our results also highlight the importance of examining the response of both target and non-target species when evaluating fish deterrent technologies.
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