BIOL 345 Lecture Notes - Lecture 11: Alkaloid, Pith, Ovulation

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To defe(cid:374)ses agai(cid:374)st p(cid:396)edato(cid:396)s (cid:894)i(cid:374)(cid:272)ludi(cid:374)g sea(cid:396)(cid:272)h a(cid:374)d sete(cid:272)t(cid:895). A(cid:271)st(cid:396)a(cid:272)ts: do(cid:374)(cid:859)t (cid:449)o(cid:396)(cid:396)(cid:455) a(cid:271)out autho(cid:396) o(cid:396) fi(cid:396)st bit of abstract but the conclusions of the paper. Post capture behavioural defenses: (1) group defense, 2) feigning death: scream most animals. Warn relatives (kin selection) moms are much more likely to vocalize when juveniles are present. Attract other predators for interference prey more likely to get away even if more predators are present. Results show most support for predator interference: autotomization: shed limb or tail and distract predators energetically expensive (last option). Skink (brightly coloured tail) autotomizes tail during attempted predation (get rid of tail as last resort). Tail has ganglia and moves like the snake body. Costs after tail autotomization: stay close to shelter, take fewer risks, flee further if disturbed, feed less due to less movement, shift tissue repair rather than reproductive allocation. Feather loss as an antipredator adaptation in birds.

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