30 Works

Data for: Evolutionary interactions between thermal ecology and sexual selection

Noah Leith, Kasey Fowler-Finn & Michael Moore
Thermal ecology and mate competition are both pervasive features of ecological adaptation. A surge of recent work has uncovered the diversity of ways in which temperature affects mating interactions and sexual selection. However, the potential for thermal biology and reproductive ecology to evolve together as organisms adapt to their thermal environment has been underappreciated. Here, we develop a series of hypotheses regarding (1) not only how thermal ecology affects mating system dynamics, but also how...

Developmental temperature alters the thermal sensitivity of courtship activity and signal-preference relationships, but not mating rates

Anthony Macchiano, Kasey D. Fowler-Finn, Em Miller, Uchechukwu Agali & Abisiola Ola-Ajose
Mating behaviours are susceptible to novel or stressful thermal conditions, particularly for ectothermic organisms. One way to deal with changes in thermal conditions is to exhibit developmental plasticity, whereby the thermal sensitivity of mating behaviours depend on developmental conditions. We test how developmental temperature affects the thermal sensitivity of courtship behaviour and mating rates, as well as mating signal and preference coupling. We rear treehoppers under two temperature regimes and then test how a range...

Data from: Single nucleotide polymorphism discovery via genotyping by sequencing to assess population genetic structure and recurrent polyploidization in Andropogon gerardii

Christine McAllister, Allison J. Miller & Christine A. McAllister
Premise of the study. Autopolyploidy, genome duplication within a single lineage, can result in multiple cytotypes within a species. Geographic distributions of cytotypes may reflect the evolutionary history of autopolyploid formation and subsequent population dynamics including stochastic (drift) and deterministic (differential selection among cytotypes) processes. Here, we used a population genomic approach to investigate whether autopolyploidy occurred once or multiple times in Andropogon gerardii, a widespread, North American grass with two predominant cytotypes. Methods. Genotyping-by-sequencing...

Interspecific hybridization and island colonization history, not rarity, most strongly affect the genetic diversity in a clade of Mascarene-endemic trees

Alexander Linan, Christine Edwards, George Schatz, Porter Lowry, Allison Miller & Jean Claude Sevathian
Many factors shape the genetic diversity of island-endemic trees, with important implications for conservation. Oceanic island-endemic lineages undergo an initial founding bottleneck during the colonization process and subsequently accumulate diversity following colonization. Moreover, many island endemics occur in small populations and are further threatened by anthropogenic factors that cause population declines, making them susceptible to losses in genetic diversity through genetic drift, inbreeding, and bottlenecks. However, life-history traits commonly found in trees, such as outcrossing...

Patterns of thermal sensitivity and sex-specificity of courtship behavior differs between two sympatric species of Enchenopa treehopper

Anthony Macchiano, Daniel A. Sasson, Noah T. Leith & Kasey D. Fowler-Finn
Predicting how insects will react to future thermal conditions requires understanding how temperature currently affects insect behavior, from performance traits to those involved in mating and reproduction. Many reproductive behaviors are thermally-sensitive, but little is known how temperature affects the behaviors used to find mates and coordinate mating. Here, we investigate how temperature influences courtship activity in two sympatric species of Enchenopa treehoppers (Hemiptera: Membracidae). Enchenopa use substrate-borne vibrational signals exchanged in male-female duets to...

Data from: Niche opportunities and invasion dynamics in a desert annual community

Ginger R. H. Allington, Thomas J. Valone, David N. Koons, S. K. Morgan Ernest & Michele R. Schutzenhofer
Although many factors influence the ability of exotics to invade successfully, most studies focus on only a few variables to explain invasion; attempts at theoretical synthesis are largely untested. The niche opportunities framework proposes that the demographic success of an invader is largely affected by the availability of resources and the abundance of its enemies. Here, we use a 31-year study from a desert ecosystem to examine the niche opportunities framework via the invasion of...

Data from: DNA barcodes of the native ray-finned fishes in Taiwan

Chia-Hao Chang, Kwang-Tsao Shao, Han-Yang Lin, Yung-Chieh Chui, Mao-Ying Lee, Shih-Hui Liu, Pai-Lei Lin & Yung-Chieh Chiu
Species identification based on the DNA sequence of a fragment of the cytochrome c oxidase subunit I (COI) gene in the mitochondrial genome, DNA barcoding, is widely applied to assist in sustainable exploitation of fish resources and the protection of fish biodiversity. The aim of this study was to establish a reliable barcoding reference database of the native ray-finned fishes in Taiwan. A total of 2,993 individuals, belonging to 1,245 species within 637 genera, 184...

Data from: Increased signal complexity is associated with increased mating success

Noori Choi, Matt Adams, Kasey Fowler-Finn, Elise Knowlton, Malcolm Rosenthal, Aaron Rundus, Roger Santer, Dustin Wilgers & Eileen Hebets
The evolution of complex signaling has often been explored by testing multiple functional hypotheses that vary in their underlying assumptions about how independent signal components provide selective benefits to offset the costs of their production. In the present study, we take a different approach to exploring the function of complexity per se. We test the hypothesis that increased vibratory signal complexity – based on both proportional and temporal patterning - provides selective benefits to courting...

Data from: Mechanical factors direct mouse aortic remodeling during early maturation

Victoria P. Le, Jeffrey K. Cheng, Jungsil Kim, Marius C. Staiculescu, Shawn W. Ficker, Saahil C. Sheth, Siddharth A. Bhayani, Robert P. Mecham, Hiromi Yanagisawa & Jessica E. Wagenseil
Numerous diseases have been linked to genetic mutations that lead to reduced amounts or disorganization of arterial elastic fibres. Previous work has shown that mice with reduced amounts of elastin (Eln+/−) are able to live a normal lifespan through cardiovascular adaptations, including changes in haemodynamic stresses, arterial geometry and arterial wall mechanics. It is not known if the timeline and presence of these adaptations are consistent in other mouse models of elastic fibre disease, such...

Data from: Genetic structure of Pacific trout at the extreme southern end of their native range

Alicia Abadía-Cardoso, John Carlos Garza, Richard L. Mayden & Francisco Javier García De León
Salmonid fishes are cold water piscivores with a native distribution spanning nearly the entire temperate and subarctic northern hemisphere. Trout in the genus Oncorhynchus are the most widespread salmonid fishes and are among the most important fish species in the world, due to their extensive use in aquaculture and valuable fisheries. Trout that inhabit northwestern Mexico are the southernmost native salmonid populations in the world, and the least studied in North America. They are unfortunately...

Data from: Bee communities along a prairie restoration chronosequence: similar abundance and diversity, distinct composition

Rebecca K. Tonietto, John S. Ascher & Daniel J. Larkin
Recognition of the importance of bee conservation has grown in response to declines of managed honey bees and some wild bee species. Habitat loss has been implicated as a leading cause of declines, suggesting that ecological restoration is likely to play an increasing role in bee conservation efforts. In the Midwestern USA, restoration of tallgrass prairie has traditionally targeted plant community objectives without explicit consideration for bees. However, restoration of prairie vegetation is likely to...

Data from: Molecular phylogeny of the cyprinid tribe Labeonini (Teleostei: Cypriniformes)

Lei Yang, M. Arunachalam, Tetsuya Sado, Boris A. Levin, Alexander S. Golubtsov, Jörg Freyhof, John P. Friel, Wei-Jen Chen, M. Vincent Hirt, Raja Manickam, Mary K. Agnew, Andrew M. Simons, Kenji Saitoh, Masaki Miya, Richard L. Mayden & Shunping He
The cyprinid tribe Labeonini (sensu Rainboth, 1991) is a large group of freshwater fishes containing around 40 genera and 400 species. They are characterized by an amazing diversity of modifications to their lips and associated structures. In this study, a total of 34 genera and 142 species of putative members of this tribe, which represent most of the generic diversity and more than one third of the species diversity of the group, were sampled and...

Data From: TERRA-REF, An open reference data set from high resolution genomics, phenomics, and imaging sensors

David LeBauer, Burnette Maxwell, Jeffrey Demieville, Noah Fahlgren, Andrew French, Roman Garnett, Zhenbin Hu, Kimberly Huynh, Rob Kooper, Zongyang Li, Maitiniyazi Maimaitijiang, Jerome Mao, Todd Mockler, Geoffrey Morris, Maria Newcomb, Michael Ottman, Philip Ozersky, Sidike Paheding, Duke Pauli, Robert Pless, Wei Qin, Kristina Riemer, Gareth Rohde, William Rooney, Vasit Sagan … & Charles Zender
The ARPA-E funded TERRA-REF project is generating open-access reference datasets for the study of plant sensing, genomics, and phenomics. Sensor data were generated by a field scanner sensing platform that captures color, thermal, hyperspectral, and active flourescence imagery as well as three dimensional structure and associated environmental measurements. This dataset is provided alongside data collected using traditional field methods in order to support calibration and validation of algorithms used to extract plot level phenotypes from...

Data from: Evolutionary origin and early biogeography of otophysan fishes (Ostariophysi: Teleostei)

Wei-Jen Chen, Sébastien Lavoué & Richard L. Mayden
Biogeography of the mega-diverse, freshwater and globally-distributed Otophysi has received considerable attention. The attraction largely stems from assumptions as its ancient origin, and by being almost exclusively freshwater, their suitability as to explanations of trans-oceanic distributions. Despite multiple hypotheses explaining present-day distributions, problems remain, precluding more parsimonious explanations. Underlying previous hypotheses involve alternative phylogenies for Otophysi, uncertainties as to temporal diversification and assumptions integral to various explanations. We reexamine the origin and early diversification of...

Forecasting NDVI in the Galapagos

Noah Charney, Guillaume Bastille-Rousseau, Charles Yackulic, Stephen Blake & James Gibbs
Forecasting ecosystem response to climate change is critical for guiding policy-making but challenging due to: complicated relationships between microclimates and regional climates; species’ responses that are driven by extremes rather than averages; the multifaceted nature of species’ interactions; and the lack of historical analogs to future climates. Given these challenges, even model systems such as the Galapagos Islands, a world-famous biodiversity hotspot and World Heritage Site, lack clear forecasts for future environmental change. Here, we...

Light environment interacts with visual displays in a species-specific manner in multimodal signaling wolf spiders

Rowan McGinley, James Starrett, Jason Bond & Eileen Hebets
Light availability is highly variable, yet predictable, over various timescales and the light environment is expected to play an important role in the evolution of visual signals. Courtship displays within the wolf spider genus Schizocosa always involve the use of substrate borne vibrations, however, there is substantial variation between species in the use of visual displays. We assessed the impact of light intensity on the courtship of four species of Schizocosa that vary in their...

Increases in vein length compensate for leaf area lost to lobing in grapevine

Zoë Migicovsky, Joel F. Swift, Zachary Helget, Laura L. Klein, Anh Ly, Matthew Maimaitiyiming, Karoline Woodhouse, Anne Fennell, Misha Kwasniewski, Allison J. Miller, Peter Cousins & Daniel H. Chitwood
There is considerable variation in leaf lobing and leaf size, including among grapevines, some of the most well-studied leaves. We examined the relationship between leaf lobing and leaf size across grapevine populations which varied in extent of leaf lobing. We used homologous landmarking techniques to measure 2,632 leaves across two years in 476 unique, genetically distinct grapevines from 5 biparental crosses which vary primarily in the extent of lobing. We determined to what extent leaf...

Temperature and mating in harvestmen

Kasey Fowler-Finn & Todd Johnson
Temperature impacts a wide range of mating behaviours, particularly in ectothermic organisms that tend to havebody temperatures similar to ambient thermal conditions. Here, we test the effects of thermal variation on precopulatory and copulatory behaviour in the harvester Leiobunum politum Weed 1889, which belongs to the group commonly known as daddy longlegs. We ran single choice mating trials across temperatures commonly experienced in the field during the mating season (18 - 34 °C) across two...

Data from: Population genomics of wild and laboratory zebrafish (Danio rerio)

Andrew R Whiteley, Anuradha Bhat, Emilia P Martins, Richard L Mayden, M Arunachalam, Silva Uusi-Heikkilä, A.T.A. Ahmed, Jiwan Shrestha, Matthew Clark, Derek Stemple & Louis Bernatchez
Understanding a wider range of genotype-phenotype associations can be achieved through ecological and evolutionary studies of traditional laboratory models. Here, we conducted the first large-scale geographic analysis of genetic variation within and among wild zebrafish (Danio rerio) populations occurring in Nepal, India, and Bangladesh and we genetically compared wild populations to several commonly used lab strains. We examined genetic variation at 1,832 polymorphic EST-based SNPs and the cytb mitochondrial gene in 13 wild populations and...

Data from: Health insurance coverage with or without a nurse-led task shifting strategy for hypertension control: a pragmatic cluster randomized trial in Ghana

Gbenga Ogedegbe, Jacob Plange-Rhule, Joyce Gyamfi, William Chaplin, Michael Ntim, Kingsley Apusiga, Juliet Iwelunmor, Kwasi Yeboah Awudzi, Kofi Nana Quakyi, Jazmin N. Mogavero, Kiran Khurshid, Bamidele Tayo & Richard Cooper
Rationale: Poor access to care and physician shortage are major barriers to hypertension control in sub-Saharan Africa. Implementation of evidence-based systems-level strategies targeted at these barriers are lacking. Objective: To evaluate the comparative effectiveness of provision of health insurance coverage (HIC) alone versus a nurse-led task-shifting strategy for hypertension control (TASSH) plus HIC on systolic BP reduction among patients with uncontrolled hypertension in Ghana. Methods and Findings: Using a pragmatic cluster-randomized trial, 32 community health...

Data from: Climate and local abundance in freshwater fishes

Jason H. Knouft & Melissa M. Anthony
Identifying factors regulating variation in numbers of individuals among populations across a species' distribution is a fundamental goal in ecology. A common prediction, often referred to as the abundant-centre hypothesis, suggests that abundance is highest near the centre of a species' range. However, because of the primary focus on the geographical position of a population, this framework provides little insight into the environmental factors regulating local abundance. While range-wide variation in population abundance associated with...

RAD-seq reveals patterns of diversification, hybridization, and the accumulation of reproductive isolation in a clade of partially sympatric, tropical island trees

Alexander Linan, , Allison Miller, George Schatz, Jean Claude Sevathian & Christine Edwards
A common pattern observed in temperate tree clades is that species are often morphologically distinct and partially interfertile but maintain species cohesion despite ongoing hybridization where ranges overlap. Although closely related species commonly occur in sympatry in tropical ecosystems, little is known about patterns of hybridization within a clade over time, and the implications of this hybridization for the maintenance of species boundaries. In this study, we focused on a clade of sympatric trees in...

Data from: Local population density and group composition influence signal-preference relationships in Enchenopa treehoppers (Hemiptera: Membracidae)

Kasey D. Fowler-Finn, Daniel C. Cruz & Rafael L. Rodriguez
Many animals exhibit social plasticity—changes in phenotype or behavior in response to experience with conspecifics—that change how evolutionary processes like sexual selection play out. Here, we asked whether social plasticity arising from variation in local population density in male advertisement signals and female mate preferences influences the form of sexual selection. We manipulated local density and determined whether this changed how the distribution of male signals overlapped with female preferences—i.e., the signal-mate preference relationship. We...

Data from: Influence of introgression and geological processes on phylogenetic relationships of western North American mountain suckers (Pantosteus, Catostomidae)

Peter J. Unmack, Thomas E. Dowling, Nina J. Laitinen, Carol L. Secor, Richard L. Mayden, Dennis K. Shiozawa & Gerald R. Smith
Intense geological activity caused major topographic changes in Western North America over the past 15 million years. Major rivers here are composites of different ancient rivers, resulting in isolation and mixing episodes between river basins over time. This history influenced the diversification of most of the aquatic fauna. The genus Pantosteus is one of several clades centered in this tectonically active region. The eight recognized Pantosteus species are widespread and common across southwestern Canada, western...

Data from: Vitis phylogenomics: hybridization intensities from a SNP array outperform genotype calls

Allison J. Miller, Naim Matasci, Heidi Schwaninger, Mallikarjuna K. Aradhya, Bernard Prins, Gan-Yuan Zhong, Charles Simon, Edward S. Buckler & Sean Myles
Understanding relationships among species is a fundamental goal of evolutionary biology. Single nucleotide polymorphisms (SNPs) identified through next generation sequencing and related technologies enable phylogeny reconstruction by providing unprecedented numbers of characters for analysis. One approach to SNP-based phylogeny reconstruction is to identify SNPs in a subset of individuals, and then to compile SNPs on an array that can be used to genotype additional samples at hundreds or thousands of sites simultaneously. Although powerful and...

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