BIOL 118 Lecture Notes - Lecture 5: Pasteurellaceae, Pack Rat, Coevolution

• School: University of San Diego
• Department: Biology Courses
• Course: BIOL 118
• Professor: Terry Bird

Document Summary

*look ahead in ppt for pop quizzes. Ghost map reading comprehension--fair game for exams (ideas) Diff species live in diff parts of the body. Have traits that allow them to live in diff parts of the body. Favors diff environments; tends to attach to surfaces they are adaptive to. Pili (hair like structures) that allows bacteria to attach to specific surfaces* Most of them not harmless; indicated that they coevolved. Space taken up by bacteria prevents pathogens to get a toe hold/gain access. Pasteurellaceae bacteria evolved with mammal"s common ancestor. Can identify which mammal it came from due to coevolution. Current hypothesis: despite being a toxin, its serves as a nutrient for the right bacteria. Baby can"t digest; hypothesis: for good bacteria. Feeds their babies+the good bacteria for baby colonization. Has lots of species of bacteria (variety) Lots of bacteria in our gut affects our behaviors. Vagus nerve (nerve going from gut to our vein)