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Use of anaesthetics with the silver-lip pearl oyster, Pinctada maxima (Jameson)
Journal article   Peer reviewed

Use of anaesthetics with the silver-lip pearl oyster, Pinctada maxima (Jameson)

N G F Mamangkey, H Acosta-Salmon and Paul C Southgate
Aquaculture, Vol.288(3-4), pp.280-284
2009
DOI: https://doi.org/10.1016/j.aquaculture.2008.12.008
url
https://doi.org/10.1016/j.aquaculture.2008.12.008View
Published Version

Abstract

pearl oyster pinctada maxima anaesthetics 2-Phenoxyethanol benzocaine propylene phenoxetol
Mortality, lower pearl retention and low pearl quality can be major problems in cultured pearl production. Anaesthetics may have a role in the pearl seeding process and this aspect was investigated in this study. Seven anaesthetic treatments, 3 mL L- 1 2-phenoxyethanol, 500 mg L- 1 and 1200 mg L- 1 of benzocaine, 1.5 mL L- 1 clove oil, 0.25 mL L- 1 and 0.4 mL L- 1 menthol liquid, and 2.5 mL L- 1 propylene phenoxetol were assessed for their ability to relax the silver-lip pearl oyster, Pinctada maxima. Of the 27 oysters exposed to each treatment, the highest proportion of relaxed oysters (96.3, 88.9 and 88.9%) and the shortest exposure times required for anaesthesia (13.8±6.4, 10.5±7.9 and 15±7.1 min), were recorded for the treatments of 3 mL L- 1 2-phenoxyethanol, 1200 mg L- 1 of benzocaine, and 2.5 mL L- 1 propylene phenoxetol, respectively. In contrast, none of the oysters exposed into 0.25 mL L- 1 menthol liquid became relaxed and most oysters exposed into 1.5 mL L- 1 clove oil died during the experiment. Oysters exposed to 3 mL L- 1 2-phenoxyethanol and 1200 mg L- 1 benzocaine remained relaxed for up to 30 min while the number of relaxed oysters exposed to 2.5 mL L- 1 propylene phenoxetol decreased during that time. With the exception of oysters exposed to clove oil, all relaxed oysters recovered within 2 h of being placed back into seawater and there was close to 100% survival after one month. © 2009 Elsevier B.V. All rights reserved.

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Fisheries
Marine & Freshwater Biology

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#14 Life Below Water

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