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Species tree phylogenetics of a clade of Cuban Anoles Seth Rudman.

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Presentation on theme: "Species tree phylogenetics of a clade of Cuban Anoles Seth Rudman."— Presentation transcript:

1 Species tree phylogenetics of a clade of Cuban Anoles Seth Rudman

2 Introduction to Anolis Anolis sagrei, one of Cuba's most common species; Anolis vermiculatus, an aquatic species from western Cuba; Anolis barbatus, a strange Cuban species that feeds on snails; Anolis allisoni, another Cuban species; Anolis bartschi, a spectacular rock- dweller that lacks a dewlap; Anolis distichus, from Hispaniola; Anolis aliniger, a montane species from Hispaniola (center).

3 Introduction to Anolis Anolis sagrei, one of Cuba's most common species; Anolis vermiculatus, an aquatic species from western Cuba; Anolis barbatus, a strange Cuban species that feeds on snails; Anolis allisoni, another Cuban species; Anolis bartschi, a spectacular rock- dweller that lacks a dewlap; Anolis distichus, from Hispaniola; Anolis aliniger, a montane species from Hispaniola (center).

4 Ecomorphs

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17 Anolis sagrei

18 Phylogenetics basics: a quick review

19 Making a Gene Tree 1) Collect tissue 2) Extract DNA and Sequence 1 mtDNA marker and 2 common nDNA markers

20 3) Align sequences and make a tree

21 Difficulties of Phylogenetics Conflicting gene histories Gene A reconstructs this topologyGene B reconstructs this topology

22 Difficulties of Phylogenetics Short distances between nodes

23 Problems encountered by my early trees…

24 Species Trees Helpful to imagine a gene tree as a tree contained within the true phylogeny. Think of a species tree as an aggregate of all gene trees.

25 What I’m doing now Re-sample characters to form smaller datasets and determine the importance of sampling many nuclear loci.


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