Chapter 14

Chapter 14 - Chapter 14- Species Interactions...

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Chapter 14- Species Interactions Consumer-Resource Interactions o Predator-prey o Herbivore-plant o Parasite-host o Organizes biological communities into food chains, with food energy being passed through the ecosystem o Mutualisms- interactions between 2 species where both benefit o Symbiosis- individuals of different species that live in close association o Parasitoid- species of wasps and flies whose larvae consume the tissues of living hosts o Detritivores- consume dead organic material, leaf litter, feces, carcasses Have no direct effect on the populations that produce these resources Evolutionary Responses o Responsible for constantly adjusting relationships between consumers and their resources Parasitic Relationships o May simply infect host or stay with them for the entirety of their life cycle o Not easy…host develops many mechanisms to recognize invaders and destroy them o Virulence- measure of the capacity of a parasite to invade host tissues and proliferate them
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This note was uploaded on 03/22/2012 for the course PB 360 taught by Professor Wentworth during the Fall '08 term at N.C. State.

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Chapter 14 - Chapter 14- Species Interactions...

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