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Symbiosis Species Interaction Topic *1014

Symbiosis Species Interaction Topic *1014. Ms. Morris. Symbiosis. A close ecological relationship between the individuals of two (or more) different species Sometimes it benefits both species Sometimes one species benefits at the other's expense Sometimes neither species benefits .

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Symbiosis Species Interaction Topic *1014

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  1. SymbiosisSpecies InteractionTopic *1014 Ms. Morris

  2. Symbiosis • A close ecological relationship between the individuals of two (or more) different species • Sometimes it benefits both species • Sometimes one species benefits at the other's expense • Sometimes neither species benefits

  3. Mutualism • BOTH species benefits • One species gets food, while another gets shelter • One species gets protection, while another gets food

  4. Image: www.discoverlife.org Mutualism – Ants and Acacia trees

  5. Commensalism • ONE species benefits, the other is unaffected • One species gets food, while the other is not harmed or benefited • One species gets protection, while the other is not harmed or benefited

  6. Commensalism – Pseudoscorpions on a fly’s leg Image: pick5.pick.uga.edu

  7. Parasitism • One species benefits, the other is harmed but not killed • One species gets food, while the other is weakened • If the host species was killed, what would happen to the parasite species?

  8. Parasitism - Tomato hornworm is covered with cocoons of pupating braconid wasps Image: www.cals.ncsu.edu

  9. Neutralism • Neither species is benefited or harmed • Both species live in the same community, but do not interact

  10. Neutralism – Both cacti and tarantulas live in the desert Images: www.tetch.com

  11. Amensalism • One species is harmed, while the other is not affected • Forest fires – all species die, but no species benefits • Floral industry – we cut flowers, the flowers die, but we don’t get a real benefit (other than it looks pretty)

  12. Amensalism – Flowers will die, but we get no benefit from it Image: www.tidysflowers.com Image: www.affordable-flowers.com

  13. Competition • Both species are harmed • Species fight for food • Organisms within a species fight for a mate • comp.mov

  14. Competition – Evergreen Trees are competing for light and nutrients Image: www.for.gov.bc.ca Interspecies – Between two different species Intraspecies - Within a certain species Which is this picture?

  15. Questions • What is the difference between parasitism and amensalism? • Why don’t parasites let their hosts die? • What kind of relationship do ants and acacia trees have? • Why doesn’t a competitive relationship benefit any species? • Hand this in to Ms. Morris by the end of the day!!! (10 points)

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