Presentation on theme: "Population – group of individuals of the same species"— Presentation transcript:
1 Competition, Predation, Symbiosis, Mutualism, Commensalism, or Parasitism
2Population – group of individuals of the same species living in the same area, potentially interactingCommunity – group of populations of different speciesliving in the same area, potentially interactingWhat are some ecological interactions?
4Why are ecological interactions important? Interactions can affect distribution and abundance.Interactions can influence evolution.Think about how the following interactions can affectdistribution, abundance, and evolution.
5Symbiosis – two species live together can include parasitism, mutualism, and commensalism
6CommensalismCommensalism is a relationship between two living organisms where one benefits and the other is neither harmed nor helped.
7Commensalism – one species receives a benefit from another species enhances fitness of one species; noeffect on fitness of the other species
8The clownfish lives among the forest of tentacles of an anemone and is protected from potential predators.
9Some birds live among cattle to eat the insects stirred up as they walk. One example are egrets who hunt for insects near a grazing animal's mouth.
10One animal attaching itself to another for transportation such as barnacles attach to shells or whales or a shrimp riding on a sea slugs.shrimp riding on a sea slugbarnacles on whale’s tail and clam
11One species uses a second organism for housing such as small mammals or birds that lives in holes in trees or orchids which live in trees.Orchid in rainforest Venezuela
12ParasitismOne organism, usually physically smaller of the two (the parasite) benefits and the other (the host) is harmed
13Parasitism – one species feeds on another enhances fitness of parasite but reduces fitness of host
14Ticks and fleas that live in a host animal's fur bite the animal and drink its blood are parasites.
15Insects such as mosquitoes feeding on a host are parasites.