Table 1 Predictions of cashew nut properties and capuchin processing behaviour at SCNP, Brazil.
From: Wild capuchin monkeys adjust stone tools according to changing nut properties
Predictions | Results |
|---|---|
Physical properties of cashew nuts | |
a. CNSL decreases with increasing nut ripeness | Supported |
b. Dry nuts are harder than fresh nuts | Supported |
Capuchin behaviour | |
a. Capuchins use fewer strikes when using a heavy stone | Supported |
b. Capuchins select heavier stones for dry nuts | Rejected |
