- To test their ability to detect and excavate Atlantic salmon eggs (Salmo salar) in an artificial redd, North American signal crayfish (Pacifastacus leniusculus) were exposed to three successive experimental treatments.
- Crayfish successfully detected and excavated buried fish but were unable to detect buried salmon eggs, despite significant opportunity.
- The results strongly suggest that signal crayfish do not present a threat to Atlantic salmon via egg predation. In the wild, however, the vulnerability of redds may vary according to a range of biotic and abiotic factors.
Copyright © 2011 John Wiley & Sons, Ltd.