2.2. Experimental design
Three water temperature groups (23, 26 and 29 °C) were established and each had triplicates. The experiment was conducted in January and February, 2009, and terminated when more than two-thirds of larvae in a group completed their metamorphosis (defined as the completion of larval body pigmentation) to juvenile phase. Therefore, the experimental period varied in different temperature groups.
One thousand and eight hundred, newly-hatched, larvae of A. clarkii were randomly assigned into nine 100-L buckets with 200 larvae each bucket and water temperature in the buckets was controlled at 26 ± 0.5 °C. Water temperature of three buckets were subsequently reduced to 23 ± 0.5 °C and another three increased to 29 ± 0.5 °C within 24 h.
2.2. Experimental designThree water temperature groups (23, 26 and 29 °C) were established and each had triplicates. The experiment was conducted in January and February, 2009, and terminated when more than two-thirds of larvae in a group completed their metamorphosis (defined as the completion of larval body pigmentation) to juvenile phase. Therefore, the experimental period varied in different temperature groups.One thousand and eight hundred, newly-hatched, larvae of A. clarkii were randomly assigned into nine 100-L buckets with 200 larvae each bucket and water temperature in the buckets was controlled at 26 ± 0.5 °C. Water temperature of three buckets were subsequently reduced to 23 ± 0.5 °C and another three increased to 29 ± 0.5 °C within 24 h.
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