Water temperature and salinity synergistically affect embryonic and larval development of the tropical black-lip rock oyster Saccostrea echinata

Samantha J Nowland; Wayne A O'Connor; Shane S Penny; Matthew W J Osborne; Paul C Southgate

doi:10.1007/s10499-019-00381-7

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Water temperature and salinity synergistically affect embryonic and larval development of the tropical black-lip rock oyster Saccostrea echinata

Journal article

Peer reviewed

Water temperature and salinity synergistically affect embryonic and larval development of the tropical black-lip rock oyster Saccostrea echinata

Samantha J Nowland, Wayne A O'Connor, Shane S Penny, Matthew W J Osborne and Paul C Southgate

Aquaculture International, Vol.27(5), pp.1239-1250

2019

DOI: https://doi.org/10.1007/s10499-019-00381-7

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Abstract

larvae

rock oyster

saccostrea echinata

salinity

tropical

water temperature

Poor larval survival is a bottleneck to commercial hatchery production of the tropical black-lip rock oyster, Saccostrea echinata. This study investigated the synergistic effects of water temperature and salinity on embryonic and larval development across each major larval life stage. Results showed that water temperature and salinity have a significant effect on embryonic development of S. echinata and that embryos did not develop below 17 °C and 14 psu. Survival was high (55-100%) across all treatments and larval stages, and shell size was used primarily to determine larval response to treatments. Larval shell size increased as water temperature and salinity increased, reaching optima at 32 °C and 23 psu for D-veligers (mean DVM 78.18± 0.85 μm), at 32 °C and 26 psu for umbonate larvae (mean DVM 183.40±2.60 μm), and at 32 °C and 29 psu for eyed larvae (mean DVM 249.64± 3.22 μm). It is recommended that S. echinata embryos and larvae are cultured within 28-32 °C and at salinity optima for each larval stage: embryo development at 32 psu, D-veligers and umbonate larvae between 23 and 26 psu, and eyed larvae between 28 and 30 psu. This is the first investigation of the combined effects of water temperature and salinity on S. echinata and provides valuable information to accelerate commercial aquaculture of this tropical species.

Details

Title: Water temperature and salinity synergistically affect embryonic and larval development of the tropical black-lip rock oyster Saccostrea echinata
Authors: Samantha J Nowland (Author) - University of the Sunshine Coast - School of Science and Engineering
Wayne A O'Connor (Author) - Port Stephens Fisheries Institute
Shane S Penny (Author) - Northern Territory Government
Matthew W J Osborne (Author) - Northern Territory Government
Paul C Southgate (Author) - University of the Sunshine Coast - School of Science and Engineering
Publication details: Aquaculture International, Vol.27(5), pp.1239-1250
Publisher: Springer Netherlands
DOI: 10.1007/s10499-019-00381-7
ISSN: 0967-6120
Organisation Unit: School of Science, Technology and Engineering; School of Science and Engineering - Legacy; Australian Centre for Pacific Islands Research; University of the Sunshine Coast, Queensland; GeneCology Research Centre - Legacy
Language: English
Record Identifier: 99451232302621
Output Type: Journal article

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Collaboration types: Domestic collaboration
Web Of Science research areas: Fisheries

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