Na+ uptake rates and whole body Na+ content of ca17a+/+, ca17a+/?, and ca17a?/? zebrafish (Danio rerio) larvae over development. There was a significant effect of genotype on Na+ uptake (A) (ANOVA; 4 dpf: F = 133, P < 0.01, n = 8; 9 dpf: F = 60.6, P < 0.01, n = 8 for ca17a+/+ and ca17a+/?, n = 7 for ca17a?/?) and on Na+ content in 4 dpf (B) (ANOVA; F?=?4.2, P = 0.03, n = 7 for ca17a+/+ and ca17a+/?, n = 6 for ca17a?/?) but not 9 dpf (ANOVA; F?=?1.0, P = 0.35, n = 8 for ca17a+/+ and ca17a+/?, n = 5 for ca17a?/?) larvae. Bars with different letters are significantly different (P < 0.05) from one another across genotypes in 4-dpf (uppercase letters) and 9-dpf (lowercase letters) larvae. Data are presented as means ± SE. dpf, days postfertilization.
|