Toxin cues affect cannibalism responses of cane toad tadpoles

Michael Crossland, Richard Shine & Jayna DeVore
In many species cannibalism is uncommon and involves non-selective consumption of conspecifics as well as heterospecifics. However, within their invasive Australian range cane toad larvae (Rhinella marina) specifically target and voraciously consume the eggs and hatchlings of conspecifics, often extirpating entire clutches. In contrast, toad larvae rarely consume the eggs and hatchlings of native frogs. Here, we use laboratory studies to demonstrate that this selective consumption is triggered by species-specific chemical cues: maternally-invested bufadienolide toxins...
1 citation reported since publication in 2022.
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