Harris_etal_2005.pdf (144.86 kB)
Effects of oxygen supersaturation and temperature on juvenile greenlip, Haliotis laevigata Donovan, and blacklip, Haliotis rubra Leach, abalone
journal contributionposted on 2023-05-16, 17:32 authored by Harris, JO, Burke, CM, Edwards, SJ, Johns, DR
Growth and survival of juvenile greenlip (39.03 (SD 3.80) mm (n = 524)) and blacklip (31.92 (SD 4.19) mm (n = 531) abalone were investigated at high dissolved oxygen levels (95-120% saturation) between 17 and 19Â°C. Abalone were fed the same artificial diet and each species was contained in groups of approximately 30 individuals within triplicate tanks for each of six treatments and were exposed to flow through water adjusted to give experimental conditions for up to 75 days. Blacklip abalone held at 16.9Â°C and 97% oxygen saturation grew in shell length significantly faster than all other treatments of blacklip abalone held at 19Â°C, and significantly faster than blacklip abalone maintained at 111% oxygen saturation and 17.5Â°C. Both temperature and oxygen saturation significantly affected the survival of this species. Blacklip abalone held at 19Â°C had significantly lower survival for both 96% oxygen saturation and 120% oxygen saturation, compared with blacklip abalone maintained at either 110% oxygen saturation and 19Â°C, or for any 17Â°C treatment. No significant differences were noted for greenlip abalone within the range tested in terms of growth rate, food consumption rate or survival, indicating that greenlip abalone tolerated these conditions better than did blacklip abalone. Â© 2005 Blackwell Publishing Ltd.
Publication titleAquaculture Research
Department/SchoolInstitute for Marine and Antarctic Studies
PublisherBlackwell Publishing Ltd
Place of publicationUnited Kingdom