The 85th Annual Meeting of the American Association of Physical Anthropologists (2016)


Session 1. Hybridization in human evolution: what can other organisms tell us?. Invited Podium Symposium. Chair: Rebecca R. Ackermann Co-organizers: Rebecca R Ackermann, University of Cape Town; Benedikt Hallgrimsson, University of Calgary

April 14, 2016 , Imperial Ballroom B Add to calendar

Advances in genetics have dramatically influenced our understanding of human evolution in recent years.  Nowhere is this more apparent than in the field of ancient DNA, which has almost singlehandedly resurrected the Neanderthals (and others) from “dead-end” status, shifting the tide of public and academic opinion.  We now understand that the interplay among late Pleistocene hominin lineages involved the exchange of genes and resulted in the presence of ancient DNA lineages in living humans today.  However, the dynamics of this process and its effects on the patterns we see in the fossil and archaeological record remain poorly understood.  Gene exchange across divergent lineages can result in myriad outcomes, determined by taxon relationships, the nature of the exchange, and the environmental conditions under which it occurs.  Here we draw widely from research in various vertebrate groups to demonstrate the ways that gene flow is known to structure genetic and phenotypic diversity under different climatic, geographic, ecological and phylogenetic scenarios.  Our goal is to present and discuss a range of models that might be relevant for considering the process and effects of genetic exchange among our late Pleistocene (and possibly earlier hominin) ancestors.  Where appropriate, we will also directly apply these models to examining the record of human evolution.

8:00 Add to calendar Hybridization in human evolution. Rebecca R. Ackermann.
8:15 Add to calendar Divergence With Genetic Exchange. Mike Arnold.
8:30 Add to calendar Hybridization in Darwin's Finches. Peter R. Grant.
8:45 Add to calendar Consequences of hybridization in Darwin's finches. B. Rosemary Grant.
9:00 Add to calendar Hybrid speciation in amphibians: synergy, conflict, and sex chromosomes of allopolyploid genomes. Ben J. Evans.
9:15 Add to calendar Variation in the skeletal and ectodermal phenotype of mouse hybrids. Robyn A. Humphreys, Terrence Ritzman, Kerryn Warren, Christopher J. Percival, Charles C. Roseman, Benedikt Hallgrimsson, Rebecca R. Ackermann.
9:30 Add to calendar Admixture and adaptation in wild and domestic canids. Robert K. Wayne.
9:45 Add to calendar Paleogenomics interpretation of admixture between polar bears and brown bears. James A. Cahill, Peter Heintzman, Matthew Teasdale, Andre E. Rodrigues Sores,, Joshua Knapp, Ceiridwen J. Edwards, Ian M. Stirling, Daniel G. Bradley, Richard E. Green, Beth Shapiro.
10:00 Break
10:15 Add to calendar Gene flow and species boundaries in howler monkeys. Liliana Cortés-Ortiz, Marcella D. Nidiffer.
10:30 Add to calendar Genetic and morphological variation in natural and anthropogenic marmoset hybrids. Joanna Malukiewicz, Rebecca R. Ackermann, Nelson HA. Curi, Jorge A. Dergam, Lisieux F. Fuzessy, Katerina Guschanski, Adriana D. Grativol, Patricia A. Nicola, Luiz CM. Pereira, Carlos R. Ruiz-Miranda, Marcelo Passamani, Daniel L. Silva, Anne C. Stone.
10:45 Add to calendar The hybrid dynamics of baboons. Dietmar Zinner, Christian Roos.
11:00 Add to calendar An evaluation of integration in the hybrid baboon cranium. Terrence B. Ritzman, Rebecca R. Ackermann.
11:15 Add to calendar Using extant taxa to model variation in hominin hybrid populations. Kerryn A. Warren, Lauren Schroeder, Terrence B. Ritzman, Christopher J. Percival, Benedikt Hallgrimsson, Rebecca R. Ackermann.
11:30 Discussion: Fred Smith, Clifford Jolly and Benedikt Hallgrimsson