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Tolerance of striped trumpeter Latris lineata embryos to ozonated seawater
Battaglene, SC and Morehead, DT (2006) Tolerance of striped trumpeter Latris lineata embryos to ozonated seawater. Aquaculture International, 14 (5). pp. 421-429.
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The tolerance of striped trumpeter, Latris lineata (Bloch and Schneider 1801) embryos to ozonated seawater was examined as a possible means of disinfection. The effect of a range of ozone doses and exposures (CT = concentration × exposure time) was tested at different stages of embryonic development. Three-day-old embryos two-thirds developed around the yolk were exposed for 0.5, 1 or 5 min to ozone concentrations of 0.5, 1, 2 and 5 mg O3 l−1 in a fully orthogonal factorial design. For each treatment there were four replicate 250 ml containers that each received 100 ± 15 embryos. There was no significant difference in hatching success between control-treated embryos or embryos ozonated at 0.5 or 1 mg O3 l−1 for 0.5, 1 or 5 min (P < 0.05). However, hatching success was significantly reduced when embryos were treated with 2 or 5 mg O3 l−1 for 5 min or 5 mg l−1 O3 for 1 min (P < 0.05). The tolerance of embryos to 0, 0.5 or 2 mg O3 l−1 for 1 min at different stages of development (Day 0, 1, 2, 3 or 4), was then examined. An ozone concentration of 0.5 mg l−1 had no effect on hatching success at any stage of development, but a concentration of 2 mg l−1 significantly reduced hatching success on all days except Day 3. A safe and tested hatchery practise is to disinfect striped trumpeter embryos with 1 mg O3 l−1 for 1 min on Day 3 post-fertilisation when the embryo is two-thirds developed around the yolk.
|Keywords:||trumpeter, ozonated seawater, marine fauna|
|Journal or Publication Title:||Aquaculture International|
|Page Range:||pp. 421-429|
|Identification Number - DOI:||10.1007/s10499-006-9045-2|
|Additional Information:||The original publication is available at www.springerlink.com|
|Date Deposited:||04 Dec 2006|
|Last Modified:||18 Nov 2014 03:12|
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