Journal article
Effects of stocking density on the growth and survival of juvenile silver-lip pearl oysters (Pinctada maxima, Jameson) in suspended and bottom culture
Journal of Shellfish Research, Vol.16(2), pp.569-572
1997
Abstract
Growth and survival of juvenile silver-lip (or gold-lip) pearl oysters, Pinctada maxima, were compared at two stocking densities (28 individuals per net: 66 oysters per m2 or 48 individuals per net: 99 oysters per m2) with animals held in either suspended or bottom culture. The experiment was terminated during the sixth week because of high mortality in bottom-cultured pearl oysters. Mean (±SE) survival in 28-pocket nets in suspended culture (99.0±1.6%) was significantly better than that in any other treatment (p < 0.01). Survival was also high in the 48-pocket nets in suspended culture (94.8±3.6%). Mean survival in bottom culture was significantly lower (p < 0.05), being 15.8±7.8 and 13.3±3.6%, respectively, for 28 and 48-pocket nets. P. maxima held in suspended culture grew significantly larger (p < 0.001) than those in bottom culture. In both suspended and bottom culture, P. maxima in the 28-pocket nets grew larger (p < 0.001) than those held in 48-pocket nets. Additionally, pearl oysters held in bottom culture had brittle shell margins. These results indicate that culture system had a greater influence on growth and survival than stocking density. Differences in the availability of food are believed to be the major influence on the results obtained; the dry weight of suspended solids, phytoplankton biomass, and phytoplankton diversity were all greater in surface waters.
Details
- Title
- Effects of stocking density on the growth and survival of juvenile silver-lip pearl oysters (Pinctada maxima, Jameson) in suspended and bottom culture
- Authors
- J J Taylor (Author) - James Cook UniversityR A Rose (Author) - James Cook UniversityPaul C Southgate (Author) - James Cook University
- Publication details
- Journal of Shellfish Research, Vol.16(2), pp.569-572
- Publisher
- National Shellfisheries Association, Inc.
- Date published
- 1997
- ISSN
- 0730-8000
- Copyright note
- Copyright © 1997 National Shellfisheries Association. Reproduced with permission of the publisher.
- 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
- 99449822602621
- Output Type
- Journal article
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