Who gives a hoot?.

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Ecosystems: Study of Owl Pellets

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Presentation transcript:

Who gives a hoot?

Insecticide Use Organophosphate insecticides are widely used today in agriculture, home and gardens This insecticide affects animals by inhibiting an enzyme called cholinesterase. Rodents can get contaminated with insecticides This results in loss of nerve function and death by respiratory failure due to paralysis

Barn Owl Diet

Barn Owl Prey Meadow vole Mouse Rat Shrew

If farmers use these insecticides on their fields, will this affect the small mammal population?

Investigate the small mammal population by examining owl pellets

Additional studies Effects of rodenticides on owl populations Secondary poisoning of owls Effects of insecticides on owl populations DDE and dieldrin cause eggshell thinning http://conserveonline.org/docs/2001/03/brno.doc