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Fig. 46. Impact of seawater environments on the hatching rate of embryos at various embryogenetic stages. The letter 'a' shows significant differences in the hatching rate compared to 133°C (Stage 15) in each environment (P < 0.05; Chi-square test for independence). The letter 'b' designates significant differences in the rate compared to the freshwater group at each embryogenetic stage (P < 0.05; Chi-square test for independence). The letter 'c' expresses significant differences in the rate between 17 psu brackish water and 34 psu seawater at each embryogenetic stage (P < 0.05; Chi-square test for independence). Modified with permission of John Wiley & Sons, Inc. from Aquaculture Research, 36, Mizuno et al., Changes in seawater tolerance during the development of eyed-stage embryos in shishamo smelt Spirinchus lanceolatus (Hikita), 615–619, Table 1, © 2005, Wiley-Liss, Inc., a Wiley Company.

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