Animal Interactions Responses to the biotic environment

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    11-Dec-2015

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Animal Interactions Responses to the biotic environment Slide 2 INTERSPECIFIC AGGRESSIVE Competition Predator-prey Parasite-host CO-OPERATIVE Mutualism Commensalism Antibiosis Slide 3 Competition Individuals of different species vie for the same resource in an ecosystem (e.g. food or living space). Gauses principle no two species with exactly identical niches can co-exist for long in the same place competitive exclusion (one species outcompetes the other) OR adaptive radiation (one species adapts to a different niche) Slide 4 Predator-prey relationships Evolution physiological & behavioural adaptations Predator becomes a more successful predator Prey becomes better at escaping predation Birds of prey have developed extremely good eyesight to spot prey from a distance PREDATORS 1 PREY 0 Slide 5 Foxes are fast and quick-witted PREDATORS 2 PREY 0 Slide 6 PREDATORS 3 PREY 0 Lynx vs rabbit Slide 7 Lions hunt co-operatively PREDATORS 4 PREY 0 Slide 8 PREDATORS 3 PREY 100 Speed is very advantageous for prey animals........ Slide 9 Methods of getting food Let the prey come to you Traps Webs Bait Ambush Sieves Slide 10 Methods of getting food Move after the prey speed teamwork swarms tools appendages Slide 11 Slide 12 Parasite-host relationships Mosquito Ectoparasite Slide 13 Endoparasite Slide 14 Parasitoid wasp lays eggs on caterpillar Slide 15 INTERSPECIFIC AGGRESSIVE Competition Predator-prey Parasite-host CO-OPERATIVE Mutualism Commensalism Antibiosis Slide 16 Mutualism Bees pollinate flowers Slide 17 Mutualism Tickbirds eat ticks Slide 18 Commensalism Remoras attach themselves to sharks and hitch a ride, also eat leftovers Slide 19 Antibiosis Large trees shading out smaller undergrowth Animals trampling down the homes of smaller animals Human sewage disposal Slide 20 Go outside to do your business

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