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Fig. 2 | Reproductive Biology and Endocrinology

Fig. 2

From: Biological sex identification in the endangered dusky gopher frog (Lithobates sevosa): a comparison of body size measurements, secondary sex characteristics, ultrasound imaging, and urinary hormone analysis methods

Fig. 2

Example of presence versus absence of nuptial pads on DGFs. Panel a: male with darkened patch on front digit typical of nuptial pad, as indicated by arrow. Panel b: female with no nuptial pad/dark patch on front digit. However, as can be seen in Panel b, females have spot patterns on their digits, which can, in some cases, complicate nuptial pad identification

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