Fig. 1

a-e Morphological changes of M. fissipes tadpoles induced by T3. a1-a3: control; b1-b3: T3–12 h; c1-c3: T3–24 h; d1-d3: T3–36 h; e1-e3: T3–48 h. Scale bar = 1 mm. f Morphological parameter of M. fissipes tadpoles. TOL: total length; TL: tail length; BW: body width; HLL: hind limb length; HW: hindlimb width; SL: snout length; IOS: interocular space. g Morphological parameter of M. fissipes tadpoles treated with T3 at different time points. Bars represent the mean ± SD (n = 6). The data were analyzed by One-Way ANOVA and significance is set at p < 0.05. The asterisks indicate a significant difference compared to control, *p < 0.05, **p < 0.01. IL: intestine length