Use of neuroactive catecholamines to chemically induce metamorphosis of hatchery-reared flat oyster, Ostrea angasi, larvae

S O'Connor; N Moltschaniwskyj; Wayne A O'Connor

doi:10.1111/j.1365-2109.2009.02203.x

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Use of neuroactive catecholamines to chemically induce metamorphosis of hatchery-reared flat oyster, Ostrea angasi, larvae

Journal article

Peer reviewed

Use of neuroactive catecholamines to chemically induce metamorphosis of hatchery-reared flat oyster, Ostrea angasi, larvae

S O'Connor, N Moltschaniwskyj and Wayne A O'Connor

Aquaculture Research, Vol.40(14), pp.1567-1577

2009

DOI: https://doi.org/10.1111/j.1365-2109.2009.02203.x

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Abstract

catecholamine

epinephrine

epinephrine bitartrate

GABA

L-Dopa

ostrea angasi

aquaculture method

hatchery

larval development

metamorphosis

oyster culture

seed collection

survival

ostreidae

Low numbers and unreliable wild catch of the native flat oyster, Ostrea angasi, spat has resulted in the NSW flat oyster industry being reliant on hatchery-produced spat. The need to produce culchless spat in the hatchery stimulated investigation of several catecholamines to induce metamorphosis in O. angasi larvae. Larvae were treated with one of four neuroactive catecholamines (epinephrine, epinephrine bitartrate, l-Dopa and GABA) at one of four concentrations (10 -3, 10 -4, 10 -5 or 10 -6 m) for one of three treatment durations (0.5, 1-2 h) to determine morphogenic action for culchless spat production. Epinephrine bitartrate at 10 -3 and 10 -4 m and epinephrine at 10 -3, 10 -4 and 10 -5 m, for a treatment duration of 1-2 h, produced significantly greater numbers of spat and culchless spat, compared with any other treatment combination. The other catecholamines tested did not induce a significant increase in the total number of spat or culchless spat, over untreated controls. Separate trials found that long-term treatment (24 h) with epinephrine bitartrate and epinephrine at morphogenic concentrations inhibited metamorphosis. Consecutive daily use of epinephrine bitartrate increased the numbers of spat and culchless spat produced, but did not affect larval or short-term post-larval survival. Treatment with 10 -3 m epinephrine bitartrate or 10 -4 m epinephrine for 1 h is recommended for routine commercial production of culchless flat oyster spat. © 2009 Blackwell Publishing Ltd.

Details

Title: Use of neuroactive catecholamines to chemically induce metamorphosis of hatchery-reared flat oyster, Ostrea angasi, larvae
Authors: S O'Connor (Author) - University of Tasmania
N Moltschaniwskyj (Author) - University of Tasmania
Wayne A O'Connor (Author) - Port Stephens Fisheries Centre
Publication details: Aquaculture Research, Vol.40(14), pp.1567-1577
Publisher: Wiley-Blackwell Publishing Ltd.
Date published: 2009
DOI: 10.1111/j.1365-2109.2009.02203.x
ISSN: 1355-557X
Organisation Unit: University of the Sunshine Coast, Queensland; GeneCology Research Centre - Legacy
Language: English
Record Identifier: 99451062002621
Output Type: Journal article

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