Touch too much aquatic disinfectant and steam exposure treatments can inhibit further spread of invasive bloody-red mysid shrimp Hemimysis anomala

Neil E. Coughlan*, Shane O’Hara, Kate Crane, Jaimie T.A. Dick, Hugh J. MacIsaac, Ross N. Cuthbert

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

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Abstract

Biosecurity protocols designed to prevent further spread of invasive alien species have become a key component of invader management strategies. However, spread-prevention of invasive peracarids is especially difficult due to ineffectiveness of detection and treatment options. For instance, bloody-red mysid shrimp, Hemimysis anomala, is a high impact ecosystem-destabilising invader, which continues to spread in both Europe and North America. Here, we examine the effectiveness of two commonly used aquatic disinfectants (Virasure®/Virkon® Aquatic), and steam treatments (≥ 100 °C) to kill H. anomala. Specimens were exposed to 1% disinfectant solutions for complete immersion or mist-spray treatments, both lasting 60 s. Steam exposures lasted for 10 or 30 s. All treatments caused 100% mortality of H. anomala. Accordingly, it appears that relatively brief exposures to disinfectant and steam treatments can curtail further H. anomala spread. Therefore, these treatments should be used to decontaminate all equipment, from wetsuits to boats. In particular, steam and disinfectant spray treatments may be useful for decontamination of large, complex equipment, such as vehicles, trailers, outboard motors, or live wells on fishing boats.

Original languageEnglish
JournalWetlands Ecology and Management
Early online date29 Mar 2020
DOIs
Publication statusEarly online date - 29 Mar 2020

Keywords

  • Biosecurity
  • Decontaminate
  • Disinfectant spray
  • Immersion
  • Invasive alien species
  • Steam spray

ASJC Scopus subject areas

  • Ecology, Evolution, Behavior and Systematics
  • Aquatic Science
  • Management, Monitoring, Policy and Law

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