Deception. Camoflage (crypsis)  To be effective – it must be linked with appropriate behaviour (Eg – select background and not move)

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Presentation transcript:

Deception

Camoflage (crypsis)  To be effective – it must be linked with appropriate behaviour (Eg – select background and not move)

Camoflage (crypsis)  To be effective – it must be linked with appropriate behaviour (Eg – select background and not move)  Eg – Eggs and chicks of ground-nesting birds rely on this to avoid detection. 

Counter shading  Open water fish (kahawai) have silver undersides and dark on top – this makes them less visible against the light background when seen from below and the darkness below when seen from above.

Batesian mimicry  A good tasting (palatable) animal (the mimic) resembles a bad-tasting (unpalatable) one (the model).

Batesian mimicry  A good tasting (palatable) animal (the mimic) resembles a bad-tasting (unpalatable) one (the model).  This gives the mimic protection as the predator associates the colouration with the gross taste.

Batesian mimicry  A good tasting (palatable) animal (the mimic) resembles a bad-tasting (unpalatable) one (the model).  This gives the mimic protection as the predator associates the colouration with the gross taste.  Eg – Monarch butterfly is distasteful and the viceroy mimics it’s colouration.

Mullerian mimicry  No distinction between model and mimic – several bad tasting species resembling one another.

Mullerian mimicry  No distinction between model and mimic – several bad tasting species resembling one another.  It is easier for predators to avoid them altogether.

Diversion of attack  Many butterflies have spots on their wings which look like eyes – this diverts the predator.

Autonomy  Shedding of a body part – Eg – all NZ lizards can lose their tails and regenerate them later. 