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Induction of larval settlement and metamorphosis of the abalone, Haliotis discus hannai larvae using bromomethane and potassium chloride |
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| Authors: | K. H. Kang B. H. Kim J. M. Kim |
| Affiliation: | a Department of Aquaculture, Yosu National University, Yosu Jeonnam 550-749, South Korea b Namhae Hatchery, National Fisheries Research and Development Institute, Kyeongnam 668-800, South Korea |
| Abstract: | Larvae of Haliotis discus hannai were induced to settle and metamorphose by exposure to seawater supplemented with bromomethane. The settlement and metamorphosis of veliger larvae were observed with bromomethane concentrations of 300, 600, 900, 1200, 1500 ppm on the benthic diatom plates. The highest settlement and metamorphosis rates of larvae were observed in bromomethane concentrations of 600 ppm. Abalone larvae were induced to settle and metamorphose by exposure to seawater supplemented with potassium chloride. The settlement and metamorphosis of veliger larvae was observed in potassium chloride concentrations of 14, 19, 24 and 29 mM on the benthic diatom plates. The highest settlement and metamorphosis rates of larvae were observed in potassium chloride concentrations of 14–19 mM. |
| Keywords: | Haliotis discus hannai Bromomethane Potassium chloride Settlement Metamorphosis |
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