Growth and mortality of sibling triploid and diploid Sydney rock oysters, 'Saccostrea glomerata' (Gould), in the Camden Haven River

Author(s)
Troup, AJ
Cairns, SC
Simpson, Rod
Publication Date
2005
Abstract
Growth and mortality of sibling triploid and diploid Sydney rock oysters, grown at two tidal heights, three stocking densities and three different sites on the Camden Haven River estuary, were compared. Triploids grew faster than diploids. The majority of the growth rate difference occurred after the oysters reached 2 years of age. By 3.2 years, triploids were 49% heavier than diploids. Oysters grown intertidally were larger than those grown subtidally. Oysters stocked at the lightest density of 2 L per basket grew to a significantly larger size than baskets stocked at 3 or 4 L. Growth rates were significantly different at the three sites. Growth was reduced the further the oysters were from the mouth of the estuary. There was no significant difference in mortality between ploidy level, but there were differences between tidal heights, stocking densities and sites. Intertidal oysters suffered higher mortality than subtidal. Oysters stocked at the highest density had a significantly higher mortality than the lowest density; neither of these was significantly different from the medium density. The site closest to the mouth of the estuary had significantly lower mortality than the middle and upper estuary sites.
Citation
Aquaculture Research, 36(11), p. 1093-1103
ISSN
1365-2109
1355-557X
Link
Publisher
Blackwell Publishing Ltd
Title
Growth and mortality of sibling triploid and diploid Sydney rock oysters, 'Saccostrea glomerata' (Gould), in the Camden Haven River
Type of document
Journal Article
Entity Type
Publication

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