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<p class="MsoNormal" style="line-height:115%"><span style="line-height:115%;font-size:14px">Dear all,
<u></u><u></u></span></p>
<p class="MsoNormal" style="line-height:115%"><span style="line-height:115%;font-size:14px">Please support our community in Earth and environmental sciences by attending our weekly events. This Thursday's speaker in our Enviro-lunch brown bag seminar
series will be:<u></u><u></u></span></p>
<p class="MsoNormal" align="center" style="text-align:center;line-height:115%"><b><span style="line-height:115%;font-size:14px"> </span></b></p>
<p class="MsoNormal" align="center" style="text-align:center"><b><span style="font-size:14px">Lucy A. P. Tran, Ph.D.<u></u><u></u></span></b></p>
<p class="MsoNormal" align="center" style="text-align:center"><span style="font-size:14px">Department of Environmental Science, Policy, and Management, UC Berkeley</span></p>
<p class="MsoNormal" align="center" style="text-align:center"><span style="font-size:14px"><img id="m_1451555757040891163m_6076904818092590770AC9DD2CB-81B1-4287-A551-372B19B97854" src="cid:45CB40A3-9268-448B-98E1-C944ACA28C51@ucmerced.edu"></span></p>
<p class="MsoNormal" align="center" style="text-align:center"><b><span style="font-size:14px">Links between genomic and environmental variation in a mammalian geographic range expansion<u></u><u></u></span></b></p>
<p class="MsoNormal"><b><span style="font-size:14px"> </span></b></p>
<p class="m_1451555757040891163m_6076904818092590770Paragraph" style="text-indent:0in;line-height:normal"><span style="font-size:14px"><b>Abstract</b>: Both genetic drift and natural selection contribute to variation in genes and morphology across a geographic range expansion. During
the course of an expansion novel ecological conditions encountered by organisms can result in selection on traits, while the contribution of genetic drift is important when founder events occur. Evidence of the myriad neutral and selective forces acting on
geographic range expansions may be recorded in the genome. Here, we look at genomic variation in the range-expanding nine-banded armadillo to uncover links between niche differences and genetic changes. In the last 3 mya the species has dispersed northward
from its tropical origins in South America to first reach Texas in 1849 and then from there to the South, Southeast, Great Plains, and Midwest U.S. We use high-throughput genomic data to estimate phylogenetic relationships of populations across the species'
expansion gradient and to infer its demographic history. We sampled historical museum specimens as well as individuals at the expansion edge, which allows for an analysis of genomic divergence across the species' broad range over a 127-year period. Preliminary
findings suggest that patterns of genomic variation differ between core and edge populations, with genomic divergence tracking differences in climatic niche. Studying the relationship between genomic and niche divergence will provide clues for understanding
whether and how the species has evolved as it expanded its range northward into uncharted territory.<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:14px"> </span></p>
<p class="MsoNormal"><span style="font-size:14px">When: Sep. 21<sup>st</sup>,<sup>
</sup>Thursday, 12pm – 1pm<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:14px">Where: SE2-302 <u></u>
<u></u></span></p>
<p class="MsoNormal"><span style="font-size:14px"> </span></p>
<p class="MsoNormal"><span style="font-size:14px">Coffee will be provided and please bring your own mugs.
<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:14px">We look forward to seeing you,<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:14px"> </span></p>
<p class="MsoNormal"><span style="font-size:14px">Organizers for 2017-18: Nate Bogie and Lixia Jin<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:14px">Faculty coordinator: Asmeret Asefaw Berhe</span><span style="font-family:'Times New Roman';font-size:9pt"><u></u><u></u></span></p>
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