presentation, part 1 - Molecular Evolution

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Reconstructed Indian Ocean currents in early Eocene“every century the A > M currents were configured suchthat they could have transported rafts across theMozambique Channel in 25-30 days (from NEMozambique/Tanzania, 600-650 km). Actually this is aminimal maximum velocity value. If we throw in a"correctly configured” cyclone, we might be up at ~1 m/sfor a few days within the transit.”Jason Ali (pers. com.)
Current Data (presence/absence;molecular phylogenetic ANDpaleoclimatological) give remarkablystrong signal that present-day biota ispredominantly made up of “neoendemics”that dispersed from Africa during theearly Eocene to mid-MioceneLemurs and other Malagasy endemicsare unique evolutionary experiments---Precious and Irreplaceable
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How to Study an Island (Madagascar)
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Using Tree Thinking to Reconstructt
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Rush hour traffic in Madagascar
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Imbalance & Endemism in !Madagascar
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Dr. Chris Scotese (Arizona State)Th
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Vicariance?(“paleo-endemics”)Di
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(i.e., the end of the“age of dino
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Montane rainforest!(Annual rainfall
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Has central plateau served as a bar
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1! 2! 3!10 mya (+1.8)1! 2! 3!9.2 my
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Human Impact:- Humans arrived in Ma
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So what are we going to doabout it?
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Rodents
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LEMURS!!LEMURS!!
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Photo by David Haring
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Photo by Franz Lanting
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Photo by me
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Photo by David Haring
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Ascending Pharyngeal Artery!
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Genetic Consensus of Strepsirrhine
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Archaeoindris!Mouse lemur!
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Office!Main lab!Thermocycler!Gel el
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Megaladapis cytochrome b sequences
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Extinct &Extant lemursform a cladeA
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Single dispersal:lemurs (Yoder et a
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“Hard” polytomy versus “Soft
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Lineage SortingComplete Lineage Sor
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Developing New Lemur-Specific Loci
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22 out of 25 nodeshave bootstrapsup
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“Ignoring temporal information ob
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What is the Molecular Clock Hypothe
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Raw Genetic Differences"Species 1:
Page 73 and 74: The Molecular ClockThe Present0.10s
Page 75 and 76: The Molecular ClockThe Present0.022
Page 77 and 78: T3C2C1T2T1Rate and Time are confoun
Page 79 and 80: General Time Reversible (6-paramete
Page 81 and 82: Monkey! Human!Whale! Hippo!TimeUsin
Page 83 and 84: We need a method that …!• allow
Page 85 and 86: Major Innovation …• Both method
Page 87 and 88: Parameter Estimates by Data Partiti
Page 90 and 91: Figure 1 Middle Eocene lorisiforms
Page 93 and 94: N8N9N10C3N1N3N4N5N6N7N11C2N2C8C1C7C
Page 95 and 96: Excellent data quality; very good t
Page 97 and 98: Poor data quality; good taxon sampl
Page 99 and 100: Table 4 Posterior means and 95% cre
Page 101 and 102: Lessons learned (a few):• Multipl
Page 103 and 104: Bayesian analysis of new data set,
Page 105 and 106: At precisely 65 mya, an asteroid ne
Page 107 and 108: David A. Kring and Daniel D. Durda,
Page 113 and 114: Hypothetical IslandChain between Af
Page 115 and 116: Malagasy!lemuriforms!AMalagasy!carn
Page 117 and 118: The Davie Ridge: Possible Sub-aeria
Page 119 and 120: Cenozoic!Crown-basedSouthern RouteS
Page 121 and 122: SWEEPSTAKES!
Page 123: Reconstructed Indian Ocean currents
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