Publications: Peer-reviewed journal articles (by staff)

Thermal treatment as a method to control transfers of invasive biofouling species via vessel sea chests

1 January, 2012
CITATION

Piola RF, Hopkins GA 2012. Thermal treatment as a method to control transfers of invasive biofouling species via vessel sea chests. Marine Pollution Bulletin 64(8): 1620-1630.

ABSTRACT

This study examined the efficacy of heated seawater for the treatment and remediation of fouled vessel sea chest habitats. In laboratory trials, three temperature regimes (37.5 degrees C for 60 min, 40 degrees C for 30 min and 42.5 degrees C for 20 min) were tested on a range of temperate taxa commonly found in sea chests. Field validation trials further assessed the efficacy of heat treatment within a replica sea chest environment. During laboratory trials, 100% mortality was achieved across all three treatments for the majority of taxa; the exceptions being the barnacle Elminius modestus and the oyster Crassostrea gigas. Temperature tolerance limits observed in the laboratory were successfully replicated under simulated sea chest conditions: however, a failure to achieve even heat distribution was an obstacle to achieving uniform mortality. This study provides guidance on the temperature/exposure parameters required for vessels plying temperate latitudes, and demonstrates that heated seawater has potential for controlling biofouling in vessel sea chests.

(C) 2012 Elsevier Ltd. All rights reserved.