18 Works

Data from: Geographic determinants of gene flow in two sister species of tropical Andean frogs

Carlos E. Guarnizo & David C. Cannatella
Complex interactions between topographic heterogeneity, climatic and environmental gradients, and thermal niche conservatism are commonly assumed to indicate the degree of biotic diversification in montane regions. Our aim was to investigate factors that disrupt gene flow between populations and to determine if there is evidence of downslope asymmetric migration in highland frogs with wide elevational ranges and thermal niches. We determined the role of putative impediments to gene flow (as measured by least-cost path (LCP)...

Data from: Molecular phylogenetics of squirrelfishes and soldierfishes (Teleostei:Beryciformes: Holocentridae): reconciling more than 100 years of taxonomic confusion

Alex Dornburg, Jon A. Moore, Rachel Webster, Dan L. Warren, Matthew C. Brandley, Teresa L. Iglesias, Peter C. Wainwright & Thomas J. Near
Squirrelfishes and soldierfishes (Holocentridae) are among the most conspicuous species in the nocturnal reef fish community. However, there is no clear consensus regarding their evolutionary relationships, which is reflected in a complicated taxonomic history. We collected DNA sequence data from multiple single copy nuclear genes and one mitochondrial gene sampled from over fifty percent of the recognized holocentrid species and infer the first species-level phylogeny of the Holocentridae. Our results strongly support the monophyly of...

Data from: A new specimen of large-bodied basal enantiornithine Bohaiornis from the early Cretaceous of China and the inference of feeding ecology in Mesozoic birds

Zhiheng Li, Zhonghe Zhou, Min Wang & Julia A. Clarke
A new specimen of Bohaiornis guoi from the Jiufotang Formation, comprising a nearly complete skeleton, sheds light on enantiornithine morphological variation and ecological specialization. The new specimen was collected from near Lamadong Village in Liaoning Province, which is the same area where the sub-adult holotype specimen was reported. It provides new information on the cranial and pectoral girdle anatomy of the species, e.g., broad nasal, strikingly robust acromion, medially curved acrocoracoid process. In contrast to...

Data from: Host-associated genomic differentiation in congeneric butterflies: now you see it, now you don’t

Alexander S. Mikheyev, Carolyn S. McBride, Ulrich G. Mueller, Camille Parmesan, Melanie R. Smee, Constanti Stefanescu, Brian Wee & Michael C. Singer
Ecotypic variation among populations may become associated with widespread genomic differentiation, but theory predicts that this should happen only under particular conditions of gene flow, selection and population size. In closely related species, we might expect the strength of host-associated genomic differentiation (HAD) to be correlated with the degree of phenotypic differentiation in host-adaptive traits. Using microsatellite and Amplified Fragment Length Polymorphism (AFLP) markers, and controlling for isolation by distance between populations, we sought HAD...

Data from: Urban land use limits regional bumble bee gene flow

Shalene Jha & Claire Kremen
Potential declines in native pollinator communities and increased reliance on pollinator-dependent crops have raised concerns about native pollinator conservation and dispersal across human-altered landscapes. Bumble bees are one of the the most effective native pollinators, and are often the first to be extirpated in human-altered habitats, yet little is known about how bumble bees move across fine spatial scales and what landscapes promote or limit their gene flow. In this study, we examine regional genetic...

Data from: Evolutionary inferences from the analysis of exchangeability

Andrew P. Hendry, Renaud Kaeuffer, Erika Crispo, Catherine Lynn Peichel & Daniel I. Bolnick
Evolutionary inferences are usually based on statistical models that compare mean genotypes and phenotypes (or their frequencies) among populations. An alternative is to use the actual distribution of genotypes and phenotypes to infer the “exchangeability” of individuals among populations. We illustrate this approach by using discriminant functions on principal components to classify individuals among paired lake and stream populations of threespine stickleback in each of six independent watersheds. Classification based on neutral and non-neutral microsatellite...

Data from: Batch spawning facilitates transfer of an essential nutrient from diet to eggs in a marine fish

Lee A. Fuiman & Cynthia K. Faulk
Fatty acid composition of eggs affects development, growth, and ecological performance of fish embryos and larvae, with potential consequences for recruitment success. Essential fatty acids in eggs derive from the maternal diet, and the time between ingestion and deposition in eggs is ecologically important but unknown. We examined the dynamics of diet-egg transfer of arachidonic acid (ARA) in the batch-spawning fish, red drum (Sciaenops ocellatus), by measuring ARA concentrations in eggs after a single diet...

Data from: Ontogenetic sequence reconstruction and sequence polymorphism in extinct taxa: an example using early tetrapods (Tetrapoda: Lepospondyli)

Jennifer C. Olori
Ontogenetic sequence reconstruction is challenging particularly for extinct taxa because of when, where, and how fossils preserve. Different methods of reconstruction exist, but the effects of preservational bias, the applicability of size-independent methods, and the prevalence of sequence polymorphism (intraspecific variation) remain unexplored for paleontological data. Here I compare five different methods of ontogenetic sequence reconstruction and their effects on the detection of sequence polymorphism, using a large collection of the extinct vertebrates Microbrachis pelikani...

Data from: Coevolutionary patterns and diversification of ant-fungus associations in the asexual fungus-farming ant Mycocepurus smithii in Panama

Katrin Kellner, Hermogenes Fernández-Marín, Heather D. Ishak, Ruchira Sen, Timothy A. Linksvayer & Ulrich G. Mueller
Partner fidelity through vertical symbiont transmission is thought to be the primary mechanism stabilizing cooperation in the mutualism between fungus-farming (attine) ants and their cultivated fungal symbionts. An alternate or additional mechanism could be adaptive partner or symbiont choice mediating horizontal cultivar transmission or de novo domestication of free-living fungi. Using microsatellite-genotyping for the attine ant Mycocepurus smithii and ITS rDNA-sequencing for fungal cultivars, we provide the first detailed population-genetic analysis of local ant-fungus associations...

Data from: Gene expression under chronic heat stress in populations of the mustard hill coral (Porites astreoides) from different thermal environments

Carly D. Kenkel, Eli Meyer & Mikhail V. Matz
Recent evidence suggests that corals can acclimatize or adapt to local stress factors through differential regulation of their gene expression. Profiling gene expression in corals from diverse environments can elucidate the physiological processes that may be responsible for maximizing coral fitness in their natural habitat and lead to a better understanding of the coral's capacity to survive the effects of global climate change. In an accompanying paper, we show that Porites astreoides from thermally different...

Data from: Evidence for a host role in thermotolerance divergence between populations of the mustard hill coral (Porites astreoides) from different reef environments

Carly D. Kenkel, Gretchen Goodbody-Gringley, Damien Caillaud, Sarah W. Davies, Erich Bartels & Mikhail V. Matz
Studying the mechanisms that enable coral populations to inhabit spatially varying thermal environments can help evaluate how they will respond in time to the effects of global climate change and elucidate the evolutionary forces that enable or constrain adaptation. Inshore reefs in the Florida Keys experience higher temperatures than offshore reefs for prolonged periods during the summer. We conducted a common garden experiment with heat stress as our selective agent to test for local thermal...

Data from: Independent acquisition of sodium selectivity in bacterial and animal sodium channels

Benjamin J. Liebeskind, David M. Hillis & Harold H. Zakon
Electrical signaling in animal nerves and muscles is largely carried out by proteins in the superfamily of voltage-gated ion channels. These proteins are based on a single homologous domain, but different types exist as single-domain tetramers, two-domain dimers, or four-domain proteins that comprise the whole pore-forming structure. Four-domain channels are hypothesized to have evolved from a single-domain ancestor by two rounds of internal duplication. The role that a channel plays in a cell’s physiology is...

Data from: Divergence in coloration and the evolution of reproductive isolation in the Anolis marmoratus species complex

Martha M. Muñoz, Nicholas G. Crawford, , Nicholas J. Messana, Rebecca D. Tarvin, Liam J. Revell, Rosanne M. Zandvliet, Juanita M. Hopwood, Elbert Mock, André L. Schneider, Chris J. Schneider, Thomas J. McGreevy & Christopher J. Schneider
Adaptive divergence in coloration is expected to produce reproductive isolation in species that use colorful signals in mate choice and species recognition. Indeed, many adaptive radiations are characterized by differentiation in colorful signals, suggesting that divergent selection acting on coloration may be an important component of speciation. Populations in the Anolis marmoratus species complex from the Caribbean island of Guadeloupe display striking divergence in adult male color and pattern that occurs over small geographic distances,...

Data from: Diagnostic gene expression biomarkers of coral thermal stress

Carly D. Kenkel, Christopher Sheridan, Miguel C. Leal, Ranjeet Bhagooli, Karl D. Castillo, Naoko Kurata, Elizabeth McGinty, Tamar L. Goulet & Mikhail V. Matz
Gene expression biomarkers can enable rapid assessment of physiological conditions in situ, providing a valuable tool for reef managers interested in linking organism physiology with large-scale climatic conditions. Here, we assessed the ability of quantitative PCR (qPCR) based gene expression biomarkers to evaluate (1) the immediate cellular stress response (CSR) of Porites astreoides to incremental thermal stress and (2) the magnitude of CSR and cellular homeostasis response (CHR) during a natural bleaching event. Expression levels...

Data from: Interactions of multisensory components perceptually rescue túngara frog mating signals

Ryan C. Taylor & Michael J. Ryan
Sexual signals are often complex and perceived by multiple senses. How animals integrate signal components across sensory modalities can influence signal evolution. Here we show that two relatively unattractive signals that are perceived acoustically and visually can be combined in a pattern to form a signal that is attractive to female túngara frogs. Such unanticipated perceptual effects suggest that the evolution of complex signals can occur by alteration of the relationships among already-existing traits.

Data from: Microsatellites for the marsh Fritillary butterfly: de novo transcriptome sequencing, and a comparison with amplified fragment length polymorphism (AFLP) markers

Melanie R. Smee, Yannick Pauchet, Paul Wilkinson, Brian Wee, Michael C. Singer, Richard H. Ffrench-Constant, David J. Hodgson & Alexander S. Mikheyev
BACKGROUND: Until recently the isolation of microsatellite markers from Lepidoptera has proved troublesome, expensive and time-consuming. Following on from a previous study of Edith's checkerspot butterfly, Euphydryas editha, we developed novel microsatellite markers for the vulnerable marsh fritillary butterfly, E. aurinia. Our goal was to optimize the process in order to reduce both time and cost relative to prevailing techniques. This was accomplished by using a combination of previously developed techniques: in silico mining of...

Data from: Pollen feeding, resource allocation and the evolution of chemical defense in passion vine butterflies

Marcio Z. Cardoso & Lawrence E. Gilbert
Evolution of pollen feeding in Heliconius has allowed exploitation of rich amino acid sources and dramatically reorganized life history traits. In Heliconius eggs are produced mainly from adult acquired resources, leaving somatic development and maintenance to larva effort. This innovation may also have spurred evolution of chemical defense via amino acid-derived cyanogenic glycosides. By contrast, non-pollen feeding heliconiines must rely almost exclusively on larval-acquired resources for both reproduction and defense. We tested whether adult amino...

Data from: The magnitude of local adaptation under genotype-dependent dispersal

Daniel I. Bolnick & Sarah P. Otto
Dispersal moves individuals from patches where their immediate ancestors were successful to sites where their genotypes are untested. As a result, dispersal generally reduces fitness, a phenomenon known as “migration load.” The strength of migration load depends on the pattern of dispersal and can be dramatically lessened or reversed when individuals move preferentially toward patches conferring higher fitness. Evolutionary ecologists have long modeled nonrandom dispersal, focusing primarily on its effects on population density over space,...

Registration Year

  • 2013

Resource Types

  • Dataset


  • The University of Texas at Austin
  • Okinawa Institute of Science and Technology
  • University of York
  • Fred Hutchinson Cancer Research Center
  • Plymouth University
  • University of Pennsylvania
  • University of California System
  • University of Georgia
  • Oregon State University
  • University of North Carolina