Investigating the threat of non-native North American signal crayfish (Pacifastacus leniusculus) to salmon redds

Gladman, Z.F., Adams, C.E. , Bean, C.W., Long, J. and Yeomans, W.E. (2011) Investigating the threat of non-native North American signal crayfish (Pacifastacus leniusculus) to salmon redds. Aquatic Conservation: Marine and Freshwater Ecosystems, 22(1), pp. 134-137. (doi: 10.1002/aqc.1238)

Abstract

<b>1.</b> 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.<p></p> <b>2.</b> Crayfish successfully detected and excavated buried fish but were unable to detect buried salmon eggs, despite significant opportunity.<p></p> <b>3.</b> 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.

• Item Type: Articles
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: Yeomans, Dr William and Gladman, Dr Zara and Adams, Professor Colin
• Authors: Gladman, Z.F., Adams, C.E., Bean, C.W., Long, J., and Yeomans, W.E.
• College/School: College of Medical Veterinary and Life Sciences > School of Life Sciences; College of Medical Veterinary and Life Sciences > School of Biodiversity, One Health & Veterinary Medicine
• Journal Name: Aquatic Conservation: Marine and Freshwater Ecosystems
• Publisher: John Wiley & Sons Ltd.
• ISSN: 1052-7613
• ISSN (Online): 1099-0755
• Published Online: 24 November 2011