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UGA WILD 3580 - Reception and Review
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BIOL 1108 1st Edition Lecture 13Outline of Last Lecture I. Oviparous/ Viviparous/ Ovoviparity SpeciesII. Development III. Sensory Systems Outline of Current Lecture I. Functions of SmellII. ElectroreceptionIII. Magnetic ReceptionIV. Exam review Current LectureI. Function of Smell1. Locate food2. Locate mates3. Return to natal sites: imprint on the natural chemical signal of river 4. Avoid predatorso Alarm substrates that notify schools of fish if a member is wounded II. Electroreception- Ability to detect minute electrical fields- Detection of prey- muscle contractions - Communication - Electrocytes: cells stacked in columns arranged in a way that magnifies large electrical currents (most fish with a lot of electrocytes use electric currents to stun prey)- Ex. Electric ray- 20 to 50 volts- Ex. Electric Eel- 500 volts III. Magnetic Reception - Detect the Earth’s magnetic field - Used to navigate (mostly for salmon, tuna or trout to travel to natal site)- Common for migrating in other vertebrates IV. Exam review- Short answer questions (few sentences)These notes represent a detailed interpretation of the professor’s lecture. GradeBuddy is best used as a supplement to your own notes, not as a substitute.- Longer discussion questions (half a page) most likely coming from articles - Definitions of term (visa versa): fill in the blank- Listing section - Know characteristics of different taxonomies- Evolutionary terms and trends (isolating mechanisms, types, geographic variation)- Be familiar with the geologic time scale (eras, periods) first fishes= first


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UGA WILD 3580 - Reception and Review

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