22 Works

Data from: On the scent of standing variation for speciation: behavioral evidence for native sympatric host races of Rhagoletic pomonella (Diptera: Tephritidae) in the southern United States

Thomas H. Q. Powell, , Dong H. Cha & Jeffrey L. Feder
Standing variation can be critical for speciation. Here, we investigate the origins of fruit odor discrimination for Rhagoletis pomonella underlying the fly’s sympatric shift in the northeastern U.S. from downy hawthorn (Crataegus mollis) to apple (Malus domestica). Because R. pomonella mate on host fruit, preferences for natal fruit volatiles generate prezygotic isolation. Apples emit volatiles that appear to be missing from gas chromatography/electroantennographic detection profiles for flies infesting downy hawthorns, raising the question of how...

Data from: Correlated evolution of mating system and floral display traits in flowering plants and its implications for the distribution of mating system variation

Carol Goodwillie, Risa D. Sargent, Susan Kalisz, Richard H. Ree, David A. Moeller, Mario Vallejo-Marin, Christopher G. Eckert, Alice A. Winn, Elizabeth Elle, Monica A. Geber & Mark O. Johnston
Reduced allocation to structures for pollinator attraction is predicted in selfing species. We explored the association between outcrossing and floral display in a broad sample of angiosperms. We used the demonstrated relationship to test for bias against selfing species in the outcrossing rate distribution, the shape of which has relevance for the stability of mixed mating. Relationships between outcrossing rate, flower size, flower number and floral display, measured as the product of flower size and...

Data from: Lobelia siphilitica plants that escape herbivory in time also have reduced latex production

Amy L. Parachnowitsch, Christina M. Caruso, Stuart A. Campbell & Andre Kessler
Flowering phenology is an important determinant of a plant’s reproductive success. Both assortative mating and niche construction can result in the evolution of correlations between phenology and other reproductive, functional, and life history traits. Correlations between phenology and herbivore defence traits are particularly likely because the timing of flowering can allow a plant to escape herbivory. To test whether herbivore escape and defence are correlated, we estimated phenotypic and genetic correlations between flowering phenology and...

Data from: TreeFix: statistically informed gene tree error correction using species trees

Yi-Chieh Wu, Matthew D. Rasmussen, Mukul S. Bansal & Manolis Kellis
Accurate gene tree reconstruction is a fundamental problem in phylogenetics, with many important applications. However, sequence data alone often lack enough information to confidently support one gene tree topology over many competing alternatives. Here, we present a novel framework for combining sequence data and species tree information, and we describe an implementation of this framework in TreeFix, a new phylogenetic program for improving gene tree reconstructions. Given a gene tree (preferably computed using a maximum...

Data from: Behavioral evidence for fruit odor discrimination and sympatric host races of Rhagoletis pomonella flies in the western United States

Charles E. Linn, Wee L. Yee, Sheina B. Sim, Dong H. Cha, Thomas Powell, Robert B. Goughnour & Jeffrey L. Feder
The recent shift of Rhagoletis pomonella (Diptera: Tephritidae) from its native host downy hawthorn, Crataegus mollis, to introduced domesticated apple, Malus domestica, in the eastern U.S. is a model for sympatric host race formation. However, the fly is also present in the western U.S., where it may have been introduced via infested apples within the last 60 years. In addition to apple, R. pomonella also infests two hawthorns in the West, one the native black...

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 & M. Vincent Hirt
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: The relationship between variable host grouping and functional responses among parasitoids of Antispila nysaefoliella (Lepidoptera: Heliozelidae)

Candace Low, Sonja J. Scheffer, Matthew L. Lewis & Michael W. Gates
Our study investigated the importance of variability in the parasitoid community as a source of selection on host group size using a field population of the tupelo leafminer, Antispila nysaefoliella Clemens, which specializes on tupelo, Nyssa sylvatica Marsh. Larvae were collected from leaves with variable numbers of larvae and screened for parasitism using polymerase chain reaction of mitochondrial cytochrome oxidase I using markers designed specifically for amplifying parasitoid DNA while excluding host DNA. This method...

Data from: Insect herbivores drive real-time ecological and evolutionary change in plant populations

Anurag A. Agrawal, Amy P. Hastings, M. T. J. Johnson, J. L. Maron & Juha-Pekka Salminen
Insect herbivores are hypothesized to be major factors affecting the ecology and evolution of plants. We tested this prediction by suppressing insects in replicated field populations of a native plant, Oenothera biennis, which reduced seed predation, altered interspecific competitive dynamics, and resulted in rapid evolutionary divergence. Comparative genotyping and phenotyping of nearly 12,000 O. biennis individuals revealed that in plots protected from insects, resistance to herbivores declined through time due to changes in flowering time...

Data from: Avian predation pressure as a potential driver of periodical cicada cycle length

Walter D. Koenig & Andrew M. Liebhold
The extraordinarily long life cycles, synchronous emergences at 13- or 17-year intervals, and complex geographic distribution of periodical cicadas (Magicicada spp.) in eastern North America are an evolutionary enigma. Although a variety of factors, including satiation of above-ground predators and avoidance of interbrood hybridization, have been hypothesized to shape the evolution of this system, no empirical support for these mechanisms has previously been reported beyond the observation that bird predation can extirpate small, experimentally mistimed...

Data from: The chestnut blight fungus world tour: successive introduction events from diverse origins in an invasive plant fungal pathogen.

Cyril Dutech, Benoit Barrès, Julen Bridier, Cécile Robin, Michael G. Milgroom & Virginie Ravigné
Clonal expansion has been observed in several invasive fungal plant pathogens colonizing new areas, raising the question of the origin of clonal lineages. Using microsatellite markers, we retraced the evolutionary history of introduction of the chestnut blight fungus, Cryphonectria parasitica, in North America and western Europe. Combining discriminant analysis of principal components and approximate Bayesian computation analysis, it was shown that several introduction events from genetically differentiated source populations have occurred in both invaded areas....

Data from: Range-wide population genetic structure of the Caribbean sea fan coral, Gorgonia ventalina

Jason P. Andras, Krystal L. Rypien, Catherine Drew Harvell & Catherine D. Harvell
The population structure of benthic marine organisms is of central relevance for the conservation and management of these often threatened species as well as an accurate understanding of their ecological and evolutionary dynamics. A growing body of evidence suggests that marine populations can be structured over short distances despite theoretically high dispersal potential. Yet the proposed mechanisms governing this structure vary, and existing empirical population genetic evidence is of insufficient taxonomic and geographic scope to...

Data from: Genetic identification of Iberian rodent species using both mitochondrial and nuclear loci: application to non-invasive sampling

Soraia Barbosa, Joana Pauperio, Jeremy B. Searle, Paulo C. Alves, J. Pauperio, J. B. Searle, S. Barbosa & P. C. Alves
Species identification through non-invasive sampling is increasingly used in animal conservation genetics, given that it obviates the need to handle free-living individuals. Non-invasive sampling is particularly valuable for elusive and small species such as rodents. Although rodents are not usually assumed to be the most obvious target for conservation, of the 21 species or near-species present in Iberia, three are considered endangered and declining while several others are poorly studied. Here we develop a genetic...

Data from: Origin of the chromosomal radiation of Madeiran house mice: a microsatellite analysis of metacentric chromosomes

Maria Da Luz Mathias, Janice Britton-Davidian, Jeremy B. Searle & Daniel W. Förster
Chromosome races of Mus musculus domesticus are characterised by particular sets of metacentric chromosomes formed by Robertsonian fusions and whole-arm reciprocal translocations. The Atlantic island of Madeira is inhabited by six chromosome races of house mice with 6–9 pairs of metacentric chromosomes. Three of these races are characterised by the metacentric 3.8 also found elsewhere in the distribution of M. m. domesticus, including Denmark and Spain. We investigated the possibility that metacentric 3.8 was introduced...

Data from: Episodic radiations in the fly tree of life

Brian M. Wiegmann, Michelle D. Trautwein, Isaac S. Winkler, Norman B. Barr, Jung-Wook Kim, Christine Lambkin, Matthew A. Bertone, Brian K. Cassel, Keith M. Bayless, Alysha M. Heimberg, Benjamin M. Wheeler, Kevin J. Peterson, Thomas Pape, Bradley J. Sinclair, Jeffrey H. Skevington, Vladimir Blagoderov, Jason Caravas, Sujatha Narayanan Kutty, Urs Schmidt-Ott, Gail E. Kampmeier, F. Christian Thompson, David A. Grimaldi, Andrew T. Beckenbach, Gregory W. Courtney, Markus Friedrich … & B. J. Sinclair
Flies are one of four superradiations of insects (along with beetles, wasps, and moths) that account for the majority of animal life on Earth. Diptera includes species known for their ubiquity (Musca domestica house fly), their role as pests (Anopheles gambiae malaria mosquito), and their value as model organisms across the biological sciences (Drosophila melanogaster). A resolved phylogeny for flies provides a framework for genomic, developmental, and evolutionary studies by facilitating comparisons across model organisms,...

Data from: A field test for host fruit odour discrimination and avoidance behaviour for Rhagoletis pomonella flies in the western United States

Sheina B. Sim, Monte Mattsson, Jasmine L. Feder, Dong H. Cha, Wee L. Yee, Robert B. Goughnour, Charles E. Linn & Jeffrey L. Feder
Prezygotic isolation due to habitat choice is important to many models of speciation-with-gene-flow. Habitat choice is usually thought to occur through positive preferences of organisms for particular environments. However, avoidance of non-natal environments may also play a role in choice and have repercussions for postzygotic isolation that preference does not. The recent host shift of Rhagoletis pomonella (Diptera: Tephritidae) from downy hawthorn, Crataegus mollis, to introduced apple, Malus domestica, in the eastern U.S. is a...

Data from: Discovery and evaluation of candidate sex-determining genes and xenobiotics in the gonads of lake sturgeon (Acipenser fulvescens)

Matthew C. Hale, James R. Jackson, J. Andrew DeWoody, Matthew C. Hale, James R. Jackson & J. Andrew DeWoody
Modern pyrosequencing has the potential to uncover many interesting aspects of genome evolution, even in lineages where genomic resources are scarce. In particular, 454 pyrosequencing of nonmodel species has been used to characterize expressed sequence tags, xenobiotics, gene ontologies, and relative levels of gene expression. Herein, we use pyrosequencing to study the evolution of genes expressed in the gonads of a polyploid fish, the lake sturgeon (Acipenser fulvescens). Using 454 pyrosequencing of transcribed genes, we...

Data from: Massive, solidified bone in the wing of a volant courting bird

Kimberly S. Bostwick, Mark L. Riccio, Julian M. Humphries, K. S. Bostwick & M. L. Riccio
One pervasive morphological feature of tetrapods is the pipe-like, often marrow-filled, structure of the limb or long bones. This “hollow” form maximizes flexural strength and stiffness with the minimum amount of bony material, and is exemplified by truly hollow (air-filled), or pneumatic, humeri in many modern birds. High-resolution microCT scans of the wings of two male Club-winged Manakins (Machaeropterus deliciosus) uncovered a notable exception to the hollow-tube rule in terrestrial vertebrates; males exhibited solidified ulnae...

Data from: Adaptive geographical clines in the growth and defense of a native plant

Ellen Woods, Amy P. Hastings, Nash E. Turley, Stephen B. Heard, Anurag A. Agrawal & Ellen C. Woods
Broad-scale geographical gradients in the abiotic environment and interspecific interactions should select for clinal adaptation. How trait clines evolve has recently received increased attention because of anticipated climate change and the importance of rapid evolution in invasive species. This issue is particularly relevant for clines in growth and defense of plants, because both sets of traits are closely tied to fitness and because such sessile organisms experience strong local selection. Yet, despite widespread recognition that...

Data from: Interspecific genetics of speciation phenotypes: song and preference coevolution in Hawaiian crickets

Kevin P. Oh, Daniel J. Fergus, Jaime L. Grace & Kerry L. Shaw
Understanding the genetic architecture of traits involved in premating isolation between recently diverged lineages can provide valuable insight regarding the mode and tempo of speciation. The repeated coevolution of male courtship song and female preference across the species radiation of Laupala crickets presents an unusual opportunity to compare the genetic basis of divergence across independent evolutionary histories. Previous studies of one pair of species revealed a polygenic basis (including a significant X chromosome contribution) to...

Data from: Evolutionary history of Scinax treefrogs on land-bridge islands in south-eastern Brazil

Rayna C. Bell, Cinthia A. Brasileiro, Celio F. B. Haddad & Kelly R. Zamudio
AIM: We investigated how Pleistocene refugia and recent (~12,000 years ago) sea level incursions shaped genetic differentiation in mainland and island populations of the Scinax perpusillus treefrog group. LOCATION: Brazilian Atlantic Forest, São Paulo state, southeastern Brazil. METHODS: Using mitochondrial and microsatellite loci, we surveyed population structure and genetic diversity in Scinax from five mainland populations and three land-bridge islands to understand the roles of Pleistocene forest fragmentation and sea level incursions on genetic differentiation....

Data from: Recent speciation between sympatric Tanganyikan cichlid color morphs

Catherine E. Wagner, Amy R. McCune & Irby J. Lovette
Lake Tanganyika, Africa’s oldest lake, harbors an impressive diversity of cichlid fishes. Although diversification in its radiating groups is thought to have been initially rapid, cichlids from Lake Tanganyika show little evidence for ongoing speciation. In contrast, examples of recent divergence among sympatric color morphs are well known in haplochromine cichlids from Lakes Malawi and Victoria. Here we report genetic evidence for recent divergence between two sympatric Tanganyikan cichlid color morphs. These Petrochromis morphs share...

Data from: The consequences of genetic variation in male sex peptide gene-expression levels for SP retention and egg laying in female Drosophila

Damian T. Smith, Laura K. Sirot, Mariana F. Wolfner, David J. Hosken, L K Sirot, M F Wolfner, D T Smith, D J Hosken & N Wedell
The accessory gland proteins (Acps) that male Drosophila melanogaster produce and transfer to females during copulation are key to male and female fitness. One Acp, the sex peptide (SP), is largely responsible for a dramatic increase in female egg laying and decrease in female receptivity after copulation. While genetic variation in male SP expression levels correlate with refractory period duration in females, it is unknown whether male SP expression influences female egg laying or if...

Registration Year

  • 2012
    22

Resource Types

  • Dataset
    22

Affiliations

  • Cornell University
    22
  • United States Department of Agriculture
    5
  • University of Notre Dame
    3
  • University of Montana
    2
  • Washington State University Vancouver
    2
  • Simon Fraser University
    2
  • University of York
    2
  • North Carolina State University
    2
  • Sao Paulo State University
    1
  • The University of Texas at Austin
    1