Fig. 4
From: Variation in responses to photoperiods and temperatures in Japanese medaka from different latitudes
Day length (top), water temperature (middle), and gonadal development of the Higashidori and Hanamaki populations (bottom) at the Hakodate outdoor experimental field. The raw data of the day length and the temperature and the GSI values are shown in Tables S8 and S9. (Bottom) Mean ± SEM, n = 4–8. **p < 0.01, ***p < 0.001 by Dunnett’s test (vs. Gonadosomatic index on April 5). The raw statistical results of one-way ANOVA and Dunnett’s post hoc tests are shown in Tables 4 and 5