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exploitation (1).docx

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Department
Biology
Course
BIOLOGY 2F03
Professor
Kim Dej
Semester
Fall

Description
October 24 , 2012 Biology 2F03: Fundamental and Applied Ecology Exploitation (1) Exploitation: predation, herbivory, parasitism, disease - exploitation weaves species into complex webs - predators, parasites and pathogens affect abundance and distribution of species - their relationships are dynamic - refuges (from exploitation are needed) Life cycle of Plagiorhynchus cylindraceus - predation an parasitism combined: an example Starling predation on isopod, Armadillidium vulgare - observation - why? Infected isopods shelter less, do not seek humid habitats, walk happily on light colour substrates - conclusion: worms alter behaviour of isopod and thus predation intensity in order to parasitize birds and disperse better - fungi may modify plants to infect insects - infected isopods are eaten more frequently Biomass of algae and grazing caddisfly - predation (grazing in this case) may strongly affect target populati
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