Bullfrogs mating - stock photo
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Bullfrogs mating

Bullfrogs (Lithobates catesbianus, formerly Rana catesbeiana) mating. Female bullfrogs show great asynchrony in the timing of periods of ovulation and sexual receptivity. The duration of sexual activity for any individual female is extremely short, generally lasting only one night. During this period, the female actively moves from male to male and/or territory to territory. Mate selection is based on the females' choice and amplexus doesn't occur until the female makes physical contact with the male. Ludlow, MA.

Credit
Science Source / Kenneth H. Thomas

Dimensions
3454 x 5228 pixels

Print Size @ 300 dpi
12 x 17 inches / 29 x 44 cm

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