lecture05-slides - 1 Evolution of Behavioral II: Forces of...

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Unformatted text preview: 1 Evolution of Behavioral II: Forces of Evolution 1. Do behaviors evolve? Yes! 2. Phylogenies are useful for the study of behavioral evolution Evidence for behavioral evolution Change through time 1. Fossil evidence--trace and structural evidence 2. Historical observation Phylogenetic distributions 1. Comparisons of close relatives using phylogenies Trace fossil : fossilized evidence of biological activity Transitional form : a species that exhibits traits common to ancestral and derived groups, especially when the groups are sharply differentiated 2 Burrow for Oryctodromeus cubicularis Varricchio D J et al. Proc. R. Soc. B 2007;274:1361-1368 2007 by The Royal Society Transitional form : a species that exhibits traits common to ancestral and derived groups, especially when the groups are sharply differentiated 3 Science, de Muizon, 2001 Archaeopteryx sp. Transitional form-- teeth, heavy bones and feathers Sinosauropteryx prima dromaeosaurid dinosaur From Freeman and Herron, Evolutionary Analysis Evidence for behavioral evolution Change through time 1. Fossil evidence 2. Historical observation--can observe evolution in action Phylogenetic distributions 1. Comparisons of close relatives using phylogenies 4 Ecological trade-off Longer and faster song better mating success Longer and faster song higher parasitism rates (Simmons and Zuk, 1999) BUT Teleogryllus oceanicus (Feld cricket) Hoy lab photo Ormia ochracea...
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lecture05-slides - 1 Evolution of Behavioral II: Forces of...

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