Effects of larval set density on subsequent growth and survival of the silver-lip pearl oyster Pinctada maxima (Jameson)

J J Taylor; Paul C Southgate; R A Rose; A J Keegan

Back

Effects of larval set density on subsequent growth and survival of the silver-lip pearl oyster Pinctada maxima (Jameson)

Journal article

Open access

Peer reviewed

Effects of larval set density on subsequent growth and survival of the silver-lip pearl oyster Pinctada maxima (Jameson)

J J Taylor, Paul C Southgate, R A Rose and A J Keegan

Journal of Shellfish Research, Vol.17(1), pp.281-283

1998

Files and links (2)

pdf

PDF - Published Version19.55 MBDownload View

Published VersionPDF - Published Version Open Access

url

http://ia600402.us.archive.org/21/items/journalofshellfi170103nati/journalofshellfi170103nati.pdfView

Webpage

Abstract

density

larvae

pearl oyster

pinctada maxima

settlement

Pediveligers of the silver-lip (or gold-lip) pearl oyster, Pinctada maxima, were placed in 15 settlement vessels at densities of 0.5, 1.0, 1.5, or 2.0 larvae/mL 16 days after fertilization. The number of settled spat per 100 cm2 was estimated on Day 23 and again on Day 44. The number of spaf/100 cm2 in the 1.0 larva/mL treatment was over double, and significantly greater (p < 0.05) than that in the 0.5 larva/mL treatment. Increases in the number of spat per 100 cm2 were not significant (p > 0.05) between larval densities of 1.0 and 1.5 larvae/mL and 1.5 and 2.0 larvae/mL. Highest mean survival was observed in the 0.5 larva/mL treatment; however, this was not significantly greater (p > 0.05) than that in other treatments. By day 44, spat from the 0.5 larva/mL treatment had a mean antero-posterior shell length (SL) of 1.87±0.08 mm and were significantly larger (p < 0.05) than spat in all other treatments. Spat in the 1.0 larva/mL treatment were significantly larger (p < 0.05) than those in the 1.5 or 2.0 larvae/mL treatments. Differences in SL between the 1.5 and 2.0 larva/mL treatments were not significantly different. Differences in size were most likely attributable to competition for space and food. Based on the results of this study, a setting density of no more than 1.0 larva/mL is recommended for P. maxima. To maximize survival and growth of P. maxima spat, a density approximating 70 spat/100 cm2 is recommended.

Details

Title: Effects of larval set density on subsequent growth and survival of the silver-lip pearl oyster Pinctada maxima (Jameson)
Authors: J J Taylor (Author) - James Cook University
Paul C Southgate (Author) - James Cook University
R A Rose (Author) - James Cook University
A J Keegan (Author) - James Cook University
Publication details: Journal of Shellfish Research, Vol.17(1), pp.281-283
Publisher: National Shellfisheries Association, Inc.
Date published: 1998
ISSN: 0730-8000
Organisation Unit: School of Science and Engineering - Legacy; Australian Centre for Pacific Islands Research; University of the Sunshine Coast, Queensland; School of Science, Technology and Engineering
Language: English
Record Identifier: 99449312402621
Output Type: Journal article

Metrics

124 File views/ downloads

1084 Record Views