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| What happened with the parasitic wasps that were introduced into SoCal to control and orange tree pest |
1900 - A. chrysomphali introduced from Mediterranean
1948 - A. lingnanensis introduced from China and displaced 1st species
1957 - A. melinus introduced from India and displaced 2nd species from the interior but not the coast |
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ejatkins Wed, 08 Feb 2012 07:54:57 GMT |
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| What is an example of competitive exclusion in the natural environment? |
Parasitic wasps |
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ejatkins Wed, 08 Feb 2012 07:54:57 GMT |
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| What is the Gause yeast experiment? |
He grew two different yeasts separately and they followed logistic growth.
When they were grown together one went extinct because one had a higher competitive effect on the other |
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ejatkins Wed, 08 Feb 2012 07:54:57 GMT |
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| Example of predation |
any predator prey
humans and parasites |
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ejatkins Wed, 08 Feb 2012 07:49:39 GMT |
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| Example of competition |
lion and hyena |
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ejatkins Wed, 08 Feb 2012 07:49:39 GMT |
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| Example of commensalism |
remora and shark
cockroach and human |
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ejatkins Wed, 08 Feb 2012 07:49:39 GMT |
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| Example of mutualism |
Zebra and tick bird
sea anenome and zooxanthellae |
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ejatkins Wed, 08 Feb 2012 07:49:39 GMT |
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| When does competitive exclusion not occur? |
1. unstable environment
2. environment where species don't compete
3. fluctuating environments that reverse direction of competition before extinction occurs |
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ejatkins Sun, 05 Feb 2012 01:05:43 GMT |
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| realized niche |
where an organism actually exists due to ecological constraints |
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ejatkins Sun, 05 Feb 2012 01:05:43 GMT |
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| fundamental niche |
multitude of conditions in which an organism can survive and multiply |
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ejatkins Sun, 05 Feb 2012 01:05:43 GMT |
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| Niche |
biological role of an organism w/in an environment |
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ejatkins Sun, 05 Feb 2012 01:03:25 GMT |
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| Competitive Exclusion Principle |
No two species can occupy the same niche simultaneously (complete competitors cannot exist) |
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ejatkins Sun, 05 Feb 2012 01:03:25 GMT |
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| What are the possible outcomes of competition? |
1. the two species coexist
2. species A goes extinct
3. species B goes extinct |
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ejatkins Sun, 05 Feb 2012 01:03:25 GMT |
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| Predation (parasitism) |
(+,-) one species benefits and the other is harmed in the association
benefit to pop growth of the predator (parasite) and harmful to pop growth of prey (host) |
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ejatkins Sun, 05 Feb 2012 01:03:25 GMT |
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| Competition |
(-.-) both species harmed from association
neither benefits to pop growth |
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ejatkins Sun, 05 Feb 2012 00:55:46 GMT |
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| Commensalism |
(+,0) one species benefits, the other is unaffected
benefit to pop growth of one species but not the other |
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ejatkins Sun, 05 Feb 2012 00:55:46 GMT |
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| Mutualism |
(+,+) both species benefit from association
benefit to pop growth rate |
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ejatkins Sun, 05 Feb 2012 00:55:46 GMT |
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| Types of species interactions |
1. mutualism
2. commensalism
3. competition
3. predation (parasitism) |
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ejatkins Sun, 05 Feb 2012 00:55:46 GMT |
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