American bullfrogs (Rana catesbeiana),and duckweed (Lemna sp.),Northern California. Native to the eastern United States,bullfrogs were introduced and have become established west of the Rockies. Bullfrogs are large,aggressive predators and prolific breeders,and have seriously depleted native frog populations in many areas of the western USA. Captive frogs,photographed in studio | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Suzio, Dan |
Bildgröße: | 5236 px × 3429 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: |
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