Lec9a_Feb10_2010_Ernest_Phlogeog

Lec9a_Feb10_2010_Ernest_Phlogeog - PHYLOGEOGRAPHY...

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PHYLOGEOGRAPHY PHYLOGENETICS HISTORICAL DEMOGRAPHY Lecture 9a Ecological Genetics ECL242_PHR 242 H. Ernest February 10, 2010
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Analysis of population structure Featured Programs: STRUCTURE and GENETIX Lab/Discussion leader: Dr. Josh Hull USFWS and UC Davis Read Hull et al 2008 Landscape characteristics influence morphological and genetic differentiation in a widespread raptor ( Buteo jamaicensis ). Molecular Ecology. 17(3): 810-824. No class on Monday Feb 15 – Univ. holiday Homework 5 due Tues Feb 16 by 1pm Optional study questions for 2/24 Exam posted at SmartSite
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Gaining familiarity with phylogeography concepts: mtDNA as phylogeography tool coalescent theory and applications to geographic analysis of genetic data Star phylogeny patterns Genetics and ice ages Gene flow vs. drift effects Nested clade analysis and mismatch distributions Taxonomic decision making Source discovery of introduced species Make sure to read in text Lecture will not cover all material
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Explains how organisms have been influenced by historical events extending over millions of years Historical periods amenable to phylogen. analysis
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Feb 8, 2010 session: Finer scales of time and distance Typically within thousands of years Within or among a few ecosystems Special value for conservation issues Manel et al 2003 for review on Landscape genetics
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Within Species Phylogenetics Determine genetic relationships among populations of same species Construct tree, then associate tree relationships with geography A measure of genetic distance + geography analyzed using Mantel permutation test Avise 2000 book for review on Phylogeography
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Phylogenetic tree = evolutionary tree Shows evolutionary relationships among species or populations in hierarchical diagram Also called Dendrogram Cladogram Tree formed using cladistic methods together into a branch of a tree diagram Clade = Branch of tree containing all indiv. Descended from common ancestor. Review page 128, CH 7, glossary of text. Cladistic Methods
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This note was uploaded on 03/02/2010 for the course ECL 242 taught by Professor Holly during the Winter '10 term at UC Davis.

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Lec9a_Feb10_2010_Ernest_Phlogeog - PHYLOGEOGRAPHY...

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