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Animal Interactions Responses to the biotic environment.

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Presentation on theme: "Animal Interactions Responses to the biotic environment."— Presentation transcript:

1 Animal Interactions Responses to the biotic environment

2 INTERSPECIFIC AGGRESSIVE Competition Predator-prey Parasite-host CO-OPERATIVE Mutualism Commensalism Antibiosis

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)

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

5 Foxes are fast and quick-witted PREDATORS 2 – PREY 0

6 PREDATORS 3 – PREY 0 Lynx vs rabbit

7 Lions hunt co-operatively PREDATORS 4 – PREY 0

8 PREDATORS 3 – PREY 100 Speed is very advantageous for prey animals

9 Methods of getting food Let the prey come to you Traps Webs Bait Ambush Sieves

10 Methods of getting food Move after the prey speed teamwork swarms tools appendages

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12 Parasite-host relationships Mosquito Ectoparasite

13 Endoparasite

14 Parasitoid wasp lays eggs on caterpillar

15 INTERSPECIFIC AGGRESSIVE Competition Predator-prey Parasite-host CO-OPERATIVE Mutualism Commensalism Antibiosis

16 Mutualism Bees pollinate flowers

17 Mutualism Tickbirds eat ticks

18 Commensalism Remoras attach themselves to sharks and hitch a ride, also eat leftovers

19 Antibiosis Large trees shading out smaller undergrowth Animals trampling down the homes of smaller animals Human sewage disposal

20 Go outside to do your business


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