Outline 40 2008 Navigation and orientation

Outline 40 2008 Navigation and orientation - Lecture 40:...

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Lecture 40: Navigation and orientation Summary. This lecture focuses on a complex behavior engaged in by many animals around this time of year, namely southward migration. This lecture will allow a somewhat synthetic approach to the behavior by visiting many themes that we have covered in lectures throughout the semester. We will use the monarch butterfly as an example, but all of the concepts we will discuss also pertain to migratory birds. We will primarily discuss two aspects of migratory behavior: energetics of the flight and how they know where to go. With respect to energetics, we will see that monarchs shift their metabolism to load lipids at the end of the summer in preparation for the flight. However, the total amount is woefully inadequate for powered flight the entire distance. Thus, they must take advantage of soaring or gliding and simply decide how to partition flapping and gliding flight. With respect to spatial guidance of the migration we will examine evidence for the use of some celestial cues. Reading Assignment
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This note was uploaded on 09/13/2009 for the course BIO 1110 taught by Professor Randywayne during the Fall '09 term at Cornell.

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