Lecture_5 - 1 Biology 157 Parasitology Taught by Prof Adler...

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10/2/16 1 Biology 157: Parasitology Taught by Prof. Adler Dillman M,W,F from 11:10 am - 12:00 pm In SPTH 2200 Lecture 5 The Natural History of Defenses SpaMal Avoidance A good way to reduce the risk of being parasiMzed is to avoid parasites. Lots of good examples of this. SpaMal Avoidance Thompson et al. 2007. Environmental Entomology SpaMal Avoidance Thompson et al. 2007. Environmental Entomology Temporal Avoidance Some ants will adjust their acMvity to avoid run-ins with parasiMc flies. They will avoid foraging for food during the day or during rainy seasons because this is when the flies are most acMve
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10/2/16 2 Dietary Adjustments Parasitoid wasps inject their eggs into insect larvae. The larvae grow and eat the insect from the inside out. Drosophila larvae can consume food high in alcohol to combat this infecMon. Dietary Adjustments Flies choose to consume more alcohol to combat parasiMc infecMon. Milan et al. 2012. Current Biology Dietary Adjustments Self-medicaMon to treat infecMon. Though most of this evidence is anecdotal. Other Pre-InfecMon Defenses Joining a herd can be a strategy for avoiding infecMon MaMng behavior and mate choice. Density-dependent prophylaxis in anMcipaMon of infecMon. Post-InfecMon Defenses Behavioral changes which can include speedy development or earlier maMng.
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