22 Works

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, C. D. Kenkel, M. V. Matz, M. C. Leal, E. McGinty, T. L. Goulet, K. D. Castillo, C. Sheridan, N. Kurata & R. Bhagooli
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: The role of inbreeding depression and mating system in the evolution of heterostyly

Jennifer J. Weber, Stephen G. Weller, Ann K. Sakai, Olga V. Tsyusko, Travis C. Glenn, Cesar A. Dominguez, Francisco E. Molina-Freaner, Juan Fornoni, Mike Tran, Nhu Nguyen, Karen Nguyen, Lien-Khuong Tran, Greg Joice & Ellen Harding
We investigated the role of morph-based differences in the expression of inbreeding depression in loss of the mid-styled morph from populations of tristylous Oxalis alpina as proposed by theoretical analyses. The extent of self-compatibility of reproductive morphs, the degree of self-fertilization, and the magnitude of inbreeding depression were investigated in three populations of O. alpina differing in their tristylous incompatibility relationships. All three populations exhibited significant inbreeding depression. In two populations with highly modified tristylous...

Data from: Duplication and population dynamics shape historic patterns of selection and genetic variation at the major histocompatibility complex in rodents

Jamie C. Winternitz & John P. Wares
Genetic variation at the MHC is vitally important for wildlife populations to respond to pathogen threats. Because natural populations can fluctuate greatly in size, a key issue concerns how population cycles and bottlenecks that could reduce genetic diversity will influence MHC genes. Using 454 sequencing, we characterized genetic diversity at the DRB Class II locus in montane voles (Microtus montanus), a North American rodent that regularly undergoes high amplitude fluctuations in population size. We tested...

Data from: Contrasting the ecological and taxonomic consequences of extinction

Max Christie, Steven M. Holland & Andrew M. Bush
Extinction in the fossil record is most often measured by the percentage of taxa (species, genera, families, etc.) that go extinct in a certain time interval. This is a measure of taxonomic loss, but previous work has indicated that taxonomic loss may be decoupled from the ecological effects of an extinction. To understand the role extinction plays in ecological change, extinction should also be measured in terms of loss of functional diversity. This study tests...

Data from: Changes in area of shallow siliciclastic marine habitat in response to sediment deposition: implications for onshore-offshore paleobiologic patterns

Steven M. Holland & Max Christie
Models presented here of shallow-marine siliciclastic deposition show that the widths of depth-defined regions differ markedly in response to sea-level change. These models add to recent studies that have emphasized the highly specific response of habitat area to sea-level change. Collectively, these studies indicate that a particular bathymetric zone on a particular margin may vary substantially in area during a sea-level change, while other such zones and margins may experience little or even opposite responses....

Data from: Experimental demonstration of accelerated extinction in source-sink metapopulations

John M. Drake & Blaine D. Griffen
Population extinction is a fundamental ecological process which may be aggravated by the exchange of organisms between productive (source) and unproductive (sink) habitat patches. The extent to which such source-sink exchange affects extinction rates is unknown. We conducted an experiment in which metapopulation effects could be distinguished from source-sink effects in laboratory populations of Daphnia magna. Time-to-extinction in this experiment was maximized at intermediate levels of habitat fragmentation, which is consistent with a minority of...

Data from: Association of polyandry and sex-ratio drive prevalence in natural populations of Drosophila neotestacea

Cheryl A. Pinzone, Kelly A. Dyer, K. A. Dyer & C. A. Pinzone
Selfish genetic elements bias their own transmission to the next generation, even at the expense of the fitness of their carrier. Sex-ratio (SR) meiotic drive occurs when an X-chromosome causes Y-bearing sperm to die during male spermatogenesis, so that it is passed on to all of the male's offspring, which are all daughters. How SR is maintained as a stable polymorphism in the absence of genetic suppressors of drive is unknown. Here, we investigate the...

Data from: Integrated and independent evolution of heteromorphic sperm types

Allen J. Moore, Leonardo D. Bacigalupe, Rhonda R. Snook, R. R. Snook, A. J. Moore & L. D. Bacigalupe
Sperm are a simple cell type with few components, yet they exhibit tremendous between-species morphological variation in those components thought to reflect selection in different fertilization environments. However, within a species, sperm components are expected to be selected to be functionally integrated for optimal fertilization of eggs. Here, we take advantage of within-species variation in sperm form and function to test whether sperm components are functionally and genetically integrated both within and between sperm morphologies...

Data from: No evidence for behavioural adaptations to nematode parasitism by the fly Drosophila putrida

Catherine L. Debban, Kelly A. Dyer, C. L. Debban & K. A. Dyer
Behavioural adaptations of hosts to their parasites form an important component of the evolutionary dynamics of host–parasite interactions. As mushroom-feeding Drosophila can tolerate deadly mycotoxins, but their Howardula nematode parasites cannot, we asked how consuming the potent mycotoxin α-amanitin has affected this host–parasite interaction. We used the fly D. putrida and its parasite H. aoronymphium, which is both highly virulent and at high prevalence in some populations, and investigated whether adult flies utilize food with...

Data from: Nutrition during sexual maturation affects competitive ability but not reproductive productivity in burying beetles

Paul E. Hopwood, Allen J. Moore & Nick J. Royle
1. Food availability can be unpredictable. When food becomes more abundant following a period of low food availability, developing larvae or juveniles often allocate resources preferentially towards increasing growth. This has important long-term effects on adult phenotypes and longevity. Despite the importance of strategic resource allocation during early development, few studies have examined how changes in resource availability during other windows of development affect reproductive strategies and fitness independent of growth. 2. We manipulated food...

Data from: Effects of parasitism on aphid nutritional and protective symbioses

Adam J. Martinez, Stephanie R. Weldon & Kerry M. Oliver
Insects often carry heritable symbionts that negotiate interactions with food plants or natural enemies. All pea aphids, Acyrthosiphon pisum, require infection with the nutritional symbiont Buchnera, and many are also infected with Hamiltonella, which protects against the parasitoid Aphidius ervi. Hamiltonella-based protection requires bacteriophages called APSEs with protection levels varying by strain and associated APSE. Endoparasitoids, including A. ervi, may benefit from protecting the nutritional symbiosis and suppressing the protective one, while the aphid and...

Data from: The rate and effects of spontaneous mutation on fitness traits in the social amoeba, Dictyostelium discoideum

David W. Hall, Sara Fox, Joan E. Strassman, David C. Queller, Joan E. Strassmann & Jennie J. Kuzdzal-Fick
We performed a mutation accumulation (MA) experiment using the social amoeba Dictyostelium discoideum to estimate the rate and distribution of effects of spontaneous mutations affecting eight putative fitness traits. We found that the per generation mutation rate for most fitness components is 0.0019 mutations per haploid genome per generation, or larger. This rate is an order of magnitude higher than estimates for fitness components in the unicellular eukaryote Saccharomyces cerevisiae, even though the base-pair substitution...

Data from: Male age mediates reproductive investment and response to paternity assurance

Kyle M. Benowitz, Megan L. Head, Camellia A. Williams, Allen J. Moore, Nick J. Royle, K. M. Benowitz, A. J. Moore, M. L. Head, N. J. Royle & C. A. Williams
Theory predicts that male response to reduced paternity will depend on male state and interactions between the sexes. If there is little chance of reproducing again, then males should invest heavily in current offspring, regardless of their share in paternity. We tested this by manipulating male age and paternity assurance in the burying beetle Nicrophorus vespilloides. We found older males invested more in both mating effort and parental effort than younger males. Furthermore, male age,...

Data from: The fourth dimension of tool use: temporally enduring artefacts aid primates learning to use tools

Dorothy M. Fragaszy, Dora Biro, Yonat Eshchar, Tatyana Humle, Patrícia Izar, Briseida Resende, Elisabetta Visalberghi, Y. Eshchar, D. M. Fragaszy, T. Humle & D. Biro
All investigated cases of habitual tool use in wild chimpanzees and capuchin monkeys include youngsters encountering durable artefacts, most often in a supportive social context. We propose that enduring artefacts associated with tool use, such as previously used tools, partly processed food items and residual material from previous activity, aid non-human primates to learn to use tools, and to develop expertise in their use, thus contributing to traditional technologies in non-humans. Therefore, social contributions to...

Data from: Genetic inference of epiphytic orchid colonization; it may only take one

Dorset W. Trapnell, Jim L. Hamrick, Caitlin D. Ishibashi, Tyler R. Kartzinel & J. L. Hamrick
Colonization of vacant habitat is a fundamental ecological process that affects the ability of species to persist and undergo range modifications in continually shifting landscapes. Thus, understanding factors that affect and limit colonization has important ecological and conservation implications. Epiphytic orchids are increasingly threatened by various factors, including anthropogenic habitat disturbance. As cleared areas (e.g. pastures) are recolonized by suitable host trees, the establishment and genetic composition of epiphytic orchid populations are likely a function...

Data from: Reproductive character displacement of epicuticular compounds and their contribution to mate choice in Drosophila subqinaria and D. recens

Kelly A. Dyer, Brooke E. White, Jacqueline L. Sztepanacz, Emily R. Bewick & Howard D. Rundle
Interactions between species can alter selection on sexual displays used in mate choice within species. Here we study the epicuticular pheromones of two Drosophila species that overlap partially in geographic range and are incompletely reproductively isolated. D. subquinaria shows a pattern of reproductive character displacement against D. recens, and partial behavioral isolation between conspecific sympatric vs. allopatric populations, whereas D. recens shows no such variation in mate choice. First, using manipulative perfuming experiments, we show...

Data from: Pest tradeoffs in technology: reduced damage by caterpillars in Bt cotton benefits aphids

Steffen Hagenbucher, Felix L. Wäckers, Felix E. Wettstein, Dawn M. Olson, John R. Ruberson, Jörg Romeis, J. R. Ruberson, F. L. Wackers, J. Romeis & F. E. Wettstein
The rapid adoption of genetically engineered (GE) plants that express insecticidal Cry proteins derived from Bacillus thuringiensis (Bt) has raised concerns about their potential impact on non-target organisms. This includes the possibility that non-target herbivores develop into pests. Although studies have now reported increased populations of non-target herbivores in Bt cotton, the underlying mechanisms are not fully understood. We propose that lack of herbivore-induced secondary metabolites in Bt cotton represents a mechanism that benefits non-target...

Data from: Molecular assessment of heterotrophy and prey digestion in zooxanthellate cnidarians

Miguel C. Leal, Jens C. Nejstgaard, Ricardo Calado, Megan E. Thompson, Marc E. Frischer, M. C. Leal, J. C. Nejstgaard, M. E. Thompson, M. E. Frischer & R. Calado
Zooxanthellate cnidarians are trophically complex, relying on both autotrophy and heterotrophy. Although several aspects of heterotrophy have been studied in these organisms, information linking prey capture with digestion is still missing. We used prey-specific PCR-based tools to assess feeding and prey digestion of two zooxanthellate cnidarians - the tropical sea anemone Aiptasia sp. and the scleractinian coral Oculina arbuscula. Prey DNA disappeared rapidly for the initial one to three days, whereas complete digestion of prey...

Data from: Relative importance of pollen and seed dispersal across a Neotropical mountain landscape for an epiphtytic orchid.

Tyler R. Kartzinel, Richard P. Shefferson & Dorset W. Trapnell
Populations of many species are isolated within narrow elevation bands of Neotropical mountain habitat, and how well dispersal maintains genetic connectivity is unknown. We asked whether genetic structure of an epiphytic orchid, Epidendrum firmum, corresponds to gaps between Costa Rican mountain ranges, and how these gaps influence pollen and seed flow. We predicted that significant genetic structure exists among mountain ranges due to different colonization histories and limited gene flow. Furthermore, we predicted that pollen...

Data from: An exotic invader drives the evolution of plant traits that determine mycorrhizal fungal diversity in a native competitor.

Richard A. Lankau & Rachel N. Nodurft
The symbiosis between land plants and arbuscular mycorrhizal fungi (AMF) is one of the most widespread and ancient mutualisms on the planet. However, relatively little is known about the evolution of these symbiotic plant-fungal interactions in natural communities. In this study, we investigated the symbiotic AMF communities of populations of the native plant species Pilea pumila (Urticaceae) with varying histories of coexistence with an non-mycorrhizal invasive species, Alliaria petiolata (Brassicaceae), known to affect mycorrhizal communities....

Data from: Highly diverse and spatially heterogeneous mycorrhizal symbiosis in a rare epiphyte is unrelated to broad biogeographic or environmental features

Tyler R. Kartzinel, Dorset W. Trapnell & Richard P. Shefferson
Symbiotic interactions are common in nature. In dynamic or degraded environments, the ability to associate with multiple partners (i.e. broad specificity) may enable species to persist through fluctuations in the availability of any particular partner. Understanding how species interactions vary across landscapes is necessary to anticipate direct and indirect consequences of environmental degradation on species conservation. We asked whether mycorrhizal symbiosis by populations of a rare epiphytic orchid (Epidendrum firmum) is related to geographic or...

Data from: Genomics of Compositae crops: reference transcriptome assemblies, and evidence of hybridization with wild relatives

Kathryn A. Hodgins, Zhao Lai, Luiz O. Oliveira, David W. Still, Moira Scascitelli, Michael S. Barker, Nolan C. Kane, Hannes Dempewolf, Alex Kozik, Richard V. Kesseli, John M. Burke, Richard W. Michelmore & Loren H. Rieseberg
Although the Compositae harbours only two major food crops, sunflower and lettuce, many other species in this family are utilized by humans and have experienced various levels of domestication. Here we have used next generation sequencing technology to develop 15 reference transcriptome assemblies for Compositae crops or their wild relatives. These data allow us to gain insight into the evolutionary and genomic consequences of plant domestication. Specifically, we performed Illumina sequencing of Cichorium endivia, Cichorium...

Registration Year

  • 2013
    22

Resource Types

  • Dataset
    22

Affiliations

  • University of Georgia
    22
  • University of Aveiro
    2
  • University of California System
    2
  • University of Exeter
    2
  • University of Massachusetts Amherst
    1
  • Rice University
    1
  • The University of Texas at Austin
    1
  • University of Kent
    1
  • University of North Carolina at Chapel Hill
    1
  • The University of Texas at Arlington
    1
  • National Autonomous University of Mexico
    1
  • Washington University in St. Louis
    1
  • Austral University of Chile
    1
  • University of Connecticut
    1
  • University of Kentucky
    1