Hydrobiologia

, Volume 746, Issue 1, pp 433–444

A whole-lake experiment to control invasive rainbow smelt (Actinoperygii, Osmeridae) via overharvest and a food web manipulation

  • Jereme W. Gaeta
  • Thomas R. Hrabik
  • Greg G. Sass
  • Brian M. Roth
  • Stephen J. Gilbert
  • M. Jake Vander Zanden
Invasive Species

DOI: 10.1007/s10750-014-1916-3

Cite this article as:
Gaeta, J.W., Hrabik, T.R., Sass, G.G. et al. Hydrobiologia (2015) 746: 433. doi:10.1007/s10750-014-1916-3

Abstract

Invasive rainbow smelt (Osmerus mordax) have spread rapidly throughout inland lakes of North America with detrimental effects on several native fishes. To test for the potential to control this species, we conducted an experimental removal of rainbow smelt in Sparkling Lake, Wisconsin during 2002–2009. We combined intensive spring harvest of rainbow smelt with an effort to increase predation on this invasive through restricted angler harvest of walleye and increased stocking of walleye (Sander vitreus). Over 4,170 kg of rainbow smelt were harvested during the experiment; up to 93% of adults were removed annually. We observed a significant decline in rainbow smelt gillnet catches during the removal. However, rainbow smelt relative abundances began increasing upon cessation of the removal effort. Bioenergetics modeling suggested that despite achieving higher than the regional average walleye densities, walleye consumed only a fraction of the rainbow smelt standing stock biomass. Our findings suggest that removal of rainbow smelt from invaded lakes may be difficult, and reinforce the importance of prevention as a strategy to limit the expansion of this invasive fish.

Keywords

Bioenergetics Overharvest Rainbow smelt (Osmerus mordaxWalleye (Sander vitreus

Copyright information

© Springer International Publishing Switzerland 2014

Authors and Affiliations

  • Jereme W. Gaeta
    • 1
    • 2
  • Thomas R. Hrabik
    • 3
  • Greg G. Sass
    • 4
  • Brian M. Roth
    • 5
  • Stephen J. Gilbert
    • 6
  • M. Jake Vander Zanden
    • 1
  1. 1.Center for LimnologyUniversity of Wisconsin – MadisonMadisonUSA
  2. 2.Department of Watershed Sciences and the Ecology CenterUtah State UniversityLoganUSA
  3. 3.Department of BiologyUniversity of Minnesota – DuluthDuluthUSA
  4. 4.Escanaba Lake Research StationWisconsin Department of Natural ResourcesBoulder JunctionUSA
  5. 5.Department of Fisheries and WildlifeMichigan State UniversityEast LansingUSA
  6. 6.Bureau of Fisheries ManagementWisconsin Department of Natural ResourcesWoodruffUSA

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