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An assessment of the efficacy of chemical descalers for managing non-indigenous marine species within vessel internal seawater systems and niche areas

Citation

Bracken, J and Gust, N and Ross, J and Coutts, A, An assessment of the efficacy of chemical descalers for managing non-indigenous marine species within vessel internal seawater systems and niche areas, Management of Biological Invasions, 7, (3) pp. 241-256. ISSN 1989-8649 (2016) [Refereed Article]


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Copyright 2016 the Authors. Licensed under Creative Commons Attribution 2.0 Generic (CC BY 2.0) https://creativecommons.org/licenses/by/2.0/

DOI: doi:10.3391/mbi.2016.7.3.04

Abstract

This study assessed the efficacy of commercially available descalers and factors that influence their efficacy as tools for marine biosecurity management. Laboratory experiments found calcium carbonate (CaCO3) degradation varied up to 29% (from 111 to 143 g/l) amongst seven products tested. Increasing the concentration of hydrochloric, phosphoric and acid-surfactant descalers from 25 to 75% did not increase the rate or total degradation of the mussel, Mytilus planulatus. Warming descaling solutions (from 11 to 26C) significantly increased the rate of mussel mortality, decay and total degradation in all treatments. Circulating treatments increased mussel mortality and decay rate in hydrochloric and acid-surfactant descalers, but had no detectable effect on total degradation after 24h. Hydrochloric acid based descalers (Rydlyme, 3H and Dynamic Descaler) were more effective than phosphoric acid (Barnacle Buster) and acid-surfactant (Triple 7 Enviroscale Plus) treatments. Organic material was largely resistant to degradation under all treatments. The implications for descalers as marine biosecurity tools are discussed.

Item Details

Item Type:Refereed Article
Keywords:non-indigenous species, introduced species, pest, mussels, descaler, biofouling
Research Division:Environmental Sciences
Research Group:Ecological Applications
Research Field:Invasive Species Ecology
Objective Division:Environment
Objective Group:Control of Pests, Diseases and Exotic Species
Objective Field:Control of Pests, Diseases and Exotic Species in Marine Environments
Author:Ross, J (Dr Jeff Ross)
ID Code:114283
Year Published:2016
Deposited By:Sustainable Marine Research Collaboration
Deposited On:2017-02-09
Last Modified:2017-05-17
Downloads:1 View Download Statistics

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