Onset of Convective Rainfall During Gradual Late Miocene Rise of the Central Andes

Poulsen, Christopher J.; Ehlers, Todd A.; Insel, N.

doi:10.1126/science.1185078

Cited by 156 publications

(133 citation statements)

References 29 publications

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“…The pattern in P. barbatus is in contrast to A. mellifera and N. vitripennis, which have a greater number of young pseudogenes. We hypothesize that the ant lineages that gave rise to P. barbatus experienced a major change in chemical ecology ≈10-30 Mya, possibly as a consequence of the increase in elevation of the Sierras and Andes to their present height (52,53). These western mountain ranges created rain shadows on their eastern sides and spawned the great American deserts.…”

Section: Resultsmentioning

confidence: 99%

Draft genome of the red harvester ant Pogonomyrmex barbatus

Smith

Robertson

et al. 2011

Proc. Natl. Acad. Sci. U.S.A.

229

220

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We report the draft genome sequence of the red harvester ant, Pogonomyrmex barbatus. The genome was sequenced using 454 pyrosequencing, and the current assembly and annotation were completed in less than 1 y. Analyses of conserved gene groups (more than 1,200 manually annotated genes to date) suggest a high-quality assembly and annotation comparable to recently sequenced insect genomes using Sanger sequencing. The red harvester ant is a model for studying reproductive division of labor, phenotypic plasticity, and sociogenomics. Although the genome of P. barbatus is similar to other sequenced hymenopterans (Apis mellifera and Nasonia vitripennis) in GC content and compositional organization, and possesses a complete CpG methylation toolkit, its predicted genomic CpG content differs markedly from the other hymenopterans. Gene networks involved in generating key differences between the queen and worker castes (e.g., wings and ovaries) show signatures of increased methylation and suggest that ants and bees may have independently co-opted the same gene regulatory mechanisms for reproductive division of labor. Gene family expansions (e.g., 344 functional odorant receptors) and pseudogene accumulation in chemoreception and P450 genes compared with A. mellifera and N. vitripennis are consistent with major life-history changes during the adaptive radiation of Pogonomyrmex spp., perhaps in parallel with the development of the North American deserts.T he formation of higher-level organization from independently functioning elements has resulted in some of the most significant transitions in biological evolution (1). These include the transition from prokaryotes to eukaryotes and from uni-to multicellular organisms, as well as the formation of complex animal societies with sophisticated division of labor among individuals. In eusocial insects such as ants, distinct morphological castes specialize in either reproduction or labor (2). Currently, very little is known of the genetic basis of caste and reproductive division of labor in these societies, where individuals follow different developmental trajectories, much like distinct cell lines in an organism (3). The resulting phenotypes, queens and workers, can differ greatly in morphology, physiology, and behavior, as well as in order of magnitude differences in life span and reproductive potential (2). Ants, of all social insects, arguably exhibit the highest diversity in social complexity, such as queen number, mating frequency, and the degree of complexity of division of labor (2), and most social traits have independent origins within the ants, making them well suited to comparative genomic analyses.The sequencing of the honey bee (Apis mellifera) genome marked a milestone in sociogenomics (4, 5), facilitating research on the evolution and maintenance of sociality from its molecular building blocks. Since then, genomes of three closely related species of solitary parasitic hymenopterans, Nasonia spp., were published and similarities and differences were extensively discuss...

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Section: Resultsmentioning

confidence: 99%

Draft genome of the red harvester ant Pogonomyrmex barbatus

Smith

Robertson

et al. 2011

Proc. Natl. Acad. Sci. U.S.A.

229

220

View full text Add to dashboard Cite

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“…Paleoclimate simulations using atmospheric general circulation models show that growth of mountain ranges and plateaus affects atmospheric circulation, and regional and global climate (e.g., Prell and Kutzbach, 1992;Kutzbach et al, 1993;Kitoh, 2004). Model simulations also show that changes in regional climate associated with mountain/plateau uplift have a large influence on the d 18 O w of precipitation as well as the d 18 O w lapse rate (Ehler and Poulsen, 2009;Poulsen et al, 2010). An elevation estimate of an area during a geologic period using an empirical d 18 O w vs. elevation relationship or a Rayleigh-type fractionation model would be reliable only if the climate conditions of the study area during the geologic time of interest were the same as that of today.…”

Section: Paleoelevation Implicationsmentioning

confidence: 95%

Late Neogene environmental changes in the central Himalaya related to tectonic uplift and orbital forcing

Wang

Deng

Flynn

et al. 2012

Journal of Asian Earth Sciences

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“…Further concerns include the recognition of competing influences (rather than purely surface elevation) on the stable isotopic composition used to deduce paleoelevation. For example, general circulation model simulations show that long-term climate change or the presence of large water bodies in the adjacent lowlands could also produce significant isotopic shifts in the Andean geologic record (Ehlers and Poulsen, 2009;Poulsen et al, 2010;Jeffery et al, 2012).…”

Section: Geological Problemmentioning

confidence: 99%

The emerging field of geogenomics: Constraining geological problems with genetic data

Baker

Fritz

Dick³

et al. 2014

Earth-Science Reviews

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The development of a genomics-derived discipline within geology is timely, as a result of major advances in acquiring and processing geologically relevant genetic data. This paper articulates the emerging field of "geogenomics," which involves the use of large-scale genetic data to constrain geological hypotheses. The paper introduces geogenomics and discusses how hypotheses can be addressed through collaboration between geologists and evolutionary biologists. As an example, geogenomic methods are applied to evaluate competing hypotheses regarding the timing of the Andean uplift, the closure of the Isthmus of Panama, the onset of trans-Amazon drainage, and Quaternary climate variation in the Neotropics.

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Onset of Convective Rainfall During Gradual Late Miocene Rise of the Central Andes

Abstract: This copy is for your personal, non-commercial The following resources related to this article are available online at www.sciencemag.org

Cited by 156 publications

References 29 publications

Draft genome of the red harvester ant Pogonomyrmex barbatus

Draft genome of the red harvester ant Pogonomyrmex barbatus

Late Neogene environmental changes in the central Himalaya related to tectonic uplift and orbital forcing

The emerging field of geogenomics: Constraining geological problems with genetic data

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