Marine Laboratory
Island Evolution Lab
Marine Laboratory
Island Evolution Lab
The Island Evolution Lab at the UOG Marine Lab is a group of researchers and students interested in basic and applied evolutionary question in island settings. We are using genetic and genomic approaches (RAD-Seq, RNA-Seq and Genome sequencing) in combination with field work, observations, collections, museums, specimens and experimental manipulations to address original questions in population genetics, phylogenetics, phylogeography, molecular ecology and genomics.
The Island Evolution Lab is partially funded by the NSF EPSCoR Guam Ecosystems Collaboratorium.
We are always looking for graduate and undergraduate students who are interested and passionate about evolution, genomics and population genetics!
Please contact us islandevolutionlab@gmail.com
Office Location: 
Karim D. Primov
Tumon, GU
Advisor:Dr. David Combosch
Research: Population Genomics of Porites lutea
Current position: Graduate Research Assistant and MS Candidate
Dareon Rios
Tumon, GU
Advisor: Dr. David Combosch
Research: Population Genomics of Acropora corals
Current position: Graduate Research Assistant and MS Candidate
Main Team Collaborations:
- Gonzalo Giribet (Harvard University, Cambridge)
- Rüdiger Bieler (Field Museum, Chicago)
- Ana Riesgo (Museum of Natural History, London)
- Miquel Arnedo (University of Barcelona)
- Sarah Lemer (University of Guam)
- Neil Landman (American Museum of Natural History, NY)
- Bernardo Lemos (Harvard University, Boston)
- Rich Aronson (Florida Institute of Technology)
- Lauren Toth (US Geological Survey)
- Martin Schwentner (University of Hamburg)
- Crawford Drury (University of Hawaii)
- Zac Forsman (University of Hawaii)
- Dan Barshis (Old Dominion University, Norfolk)
Coral Population Genomics
We are exploring the genetic connectivity, diversity and structure of multiple coral species around Guam and throughout Micronesia using an in-house RAD-Seq approach.
This is a major focus of our lab and both Dareon and Karim MS thesis are focussing on coral population genomics for their thesis research (see team).
Coral Phylogenomics & Phylogenetics
The main phylogenetic relationships among corals have been highly controversial for years. Recently genome-sclae datasets have started to clarify many of these important relationships. We are currently assembling on one of the largest genomic dataset to study the deep relationships in the coral tree of life.
Coral Bleaching Resistance
We are using experiments to induce coral bleaching in aquaria experiment to characterize the molecular processes that allow corals to survive and adapt to stressful environmental conditions. Most of these projects are conducted in collaboration with the Lemer Lab.
Nautilus Phylogeography
The Nautilus is one of the most iconic marine invertebrates and an important model system for evolutionary biologist and paleontologists, among others. We are using genomic tools to analyze the evolution and phylogeography of Nautilus across the species distribution range.
Coral Reproduction
Coral reporudciton is of major interest, not only to improve our understanding of the basic biology of reef corals but also for their management and restoration. We are studying the reproductive characteristics of several coral species, using aquarium experiments and genetic tools.
David's Google Scholar Profile
Please contact us for pdf copies or download from researchgate or sci-hub.
Combosch* D.J., S. Lemer*, P.D. Ward, N.H. Landman & G. Giribet 2017 Genomic signatures of evolution in Nautilus–an endangered living fossil. Molecular Ecology 26(21): 5923–5938 *Shared first author
Schwentner M., D.J. Combosch, J.P. Nelson & G. Giribet 2017 A Phylogenomic Solution to the Origin of Insects by Resolving Crustacean-Hexapod Relationships. Current Biology 27(12): 1818-1824
Combosch D.J., T.M. Collins, E.A. Glover, D.L. Graf, E.M. Harper, J.M. Healy, G.Y. Kawauchi, S. Lemer, E. McIntyre, E.E. Strong, J.D. Taylor, J.D. Zardus, P.M. Mikkelsen, G. Giribet & R. Bieler 2017 A family-level Tree of Life for bivalves based on a Sanger-sequencing approach. Molecular Phylogenetics & Evolution 107: 191–208
Combosch D.J. & G. Giribet 2016 Clarifying phylogenetic relationships and the evolutionary history of the bivalve order Arcida (Mollusca: Bivalvia: Pteriomorphia). Molecular Phylogenetics & Evolution 94: 298-312
Combosch D.J. & S.V. Vollmer 2015 Trans-Pacific RAD-Seq population genomics confirms introgressive hybridization in Eastern Pacific Pocillopora corals. Molecular Phylogenetics & Evolution 88: 154-162
Combosch D.J. & S.V. Vollmer 2013 Mixed asexual and sexual reproduction in the Indo-Pacific reef coral Pocillopora damicornis. Ecology & Evolution 3(10): 3379-3387
Toth L.T., R.B. Aronson, S.V. Vollmer, J.W. Hobbs, D. Urrego, H. Cheng, I. Enochs, D.J. Combosch, R. van Woesik & I. Macintyre 2012 ENSO drove 2500-Year Collapse of Eastern Pacific Coral Reefs. Science 337(6090): 81-84
Combosch D.J. & S. Vollmer 2011 Population Genetics of an Ecosystem-Defining Reef Coral Pocillopora damicornis in the Tropical Eastern Pacific. PLoS ONE 6(8): e21200
Combosch D.J., H. Guzmán, H. Schuhmacher & S. Vollmer 2008 Interspecific Hybridization and Restricted Gene Flow in Tropical Eastern Pacific Pocillopora. Molecular Ecology 17: 1304-1312
Teaching:
- Evolutionary Biology (BI/EV525)
- Population Genetics Seminar (BI/EV691)
- Evolution in Changing Seas Guam
Outreach examples:
