13 Works

Data from: Optimal group size in a highly social mammal

A. Catherine Markham, Laurence R. Gesquiere, Susan C. Alberts & Jeanne Altmann
What are the costs and benefits for animals living in groups of different sizes? Balancing the trade-offs between within-group competition (which favors smaller groups) and between-group competition (which favors larger groups) suggests that intermediate-sized groups may be best, yet empirical support for this prediction has largely been lacking. Using long-term data on wild baboons, we provide novel evidence that individuals living in intermediate-sized groups have energetically optimal space-use strategies and lower glucocorticoid (stress hormone) concentrations...

Data from: Analysing biodiversity and conservation knowledge products to support regional environmental assessments

Thomas M. Brooks, H. Resit Akçakaya, Neil D. Burgess, Stuart H. M. Butchart, Craig Hilton-Taylor, Michael Hoffmann, Diego Juffe-Bignoli, Naomi Kingston, Brian MacSharry, Mike Parr, Laurence Perianin, Eugenie C. Regan, Ana S. L. Rodrigues, Carlo Rondinini, Yara Shennan-Farpon & Bruce E. Young
Two processes for regional environmental assessment are currently underway: the Global Environment Outlook (GEO) and Intergovernmental Platform on Biodiversity and Ecosystem Services (IPBES). Both face constraints of data, time, capacity, and resources. To support these assessments, we disaggregate three global knowledge products according to their regions and subregions. These products are: The IUCN Red List of Threatened Species, Key Biodiversity Areas (specifically Important Bird & Biodiversity Areas [IBAs], and Alliance for Zero Extinction [AZE] sites),...

Data from: Predicting species’ vulnerability in a massively perturbed system: the fishes of Lake Turkana, Kenya

Natasha J. Gownaris, Ellen K. Pikitch, William O. Ojwang, Robert Michener & Les Kaufman
Background and Trophic Diversity Study: Lake Turkana is an understudied desert lake shared by Kenya and Ethiopia. This system is at the precipice of large-scale changes in ecological function due to climate change and economic development along its major inflowing river, the Omo River. To anticipate response by the fish community to these changes, we quantified trophic diversity for seven ecological disparate species (Alestes baremose, Hydrocynus forskalli, Labeo horie, Lates niloticus, Oreochromis niloticus, Synodontis schall,...

Data from: Increased susceptibility to fungal disease accompanies adaptation to drought in Brassica rapa

Niamh B. O'Hara, Joshua S. Rest & Steven J. Franks
Recent studies have demonstrated adaptive evolutionary responses to climate change, but little is known about how these responses may influence ecological interactions with other organisms, including natural enemies. We used a resurrection experiment in the greenhouse to examine the effect of evolutionary responses to drought on the susceptibility of Brassica rapa plants to a fungal pathogen, Alternaria brassicae. In agreement with previous studies in this population, we found an evolutionary shift to earlier flowering post-drought,...

Data from: Selection and sex-biased dispersal in a coastal shark: the influence of philopatry on adaptive variation

David S. Portnoy, Jonathan B. Puritz, Christopher M. Hollenbeck, James Gelsleichter, Demian Chapman & John R. Gold
Sex-biased dispersal is expected to homogenize nuclear genetic variation relative to variation in genetic material inherited through the philopatric sex. When site fidelity occurs across a heterogeneous environment, local selective regimes may alter this pattern. We assessed spatial patterns of variation in nuclear-encoded, single nucleotide polymorphisms (SNPs) and sequences of the mitochondrial control region in bonnethead sharks (Sphyrna tiburo), a species thought to exhibit female philopatry, collected from summer habitats used for gestation. Geographic patterns...

Data from: Genetic differentiation but no reduction in genetic diversity at the northern range edge of two species with different dispersal modes

Abigail E. Cahill & Jeffrey S. Levinton
Theory predicts that genetic variation should be reduced at range margins, but empirical support is equivocal. Here, we used genotyping-by-sequencing technology to investigate genetic variation in central and marginal populations of two species in the marine gastropod genus Crepidula. These two species have different development and dispersal types, and might therefore show different spatial patterns of genetic variation. Both allelic richness and the proportion of private alleles were highest in the most central populations of...

Data from: A quantitative genetic approach to assess the evolutionary potential of a coastal marine fish to ocean acidification

Alex J. Malvezzi, Christopher S. Murray, Kevin A. Feldheim, Joseph D. DiBattista, Dany Garant, Christopher J. Gobler, Demian D. Chapman & Hannes Baumann
Assessing the potential of marine organisms to adapt genetically to increasing oceanic CO2 levels requires proxies such as heritability of fitness-related traits under ocean acidification (OA). We applied a quantitative genetic method to derive the first heritability estimate of survival under elevated CO2 conditions in a metazoan. Specifically, we reared offspring, selected from a wild coastal fish population (Atlantic silverside, Menidia menidia), at high CO2 conditions (~2,300 μatm) from fertilization to 15 days post hatch,...

Data from: From the field to the lab: best practices for field preservation of bat specimens for molecular analyses

Angelique Corthals, Alynn Martin, Omar M. Warsi, Megan Woller-Skar, Winston Lancaster, Amy Russell & Liliana M. Davalos
Studies in molecular ecology depend on field-collected samples for genetic information, and the tissue sampled and preservation conditions strongly affect the quality of the DNA obtained. DNA yields from different tissue types have seldom been compared, and the relative performance of storage media has never been directly tested, even though these media may influence DNA degradation under field conditions. We analyzed DNA yield from buccal swabs and wing punches harvested from live bats using nucleic...

Data from: Genetic perturbation of key central metabolic genes extends life span in Drosophila and affects response to dietary restriction

Matthew E. Talbert, Brittany Barnett, Robert Hoff, Maria Amella, Caitlin Kuczynski, Erik Lavington, Spencer Koury, Evgeny Brud & Walter F. Eanes
There is a connection between nutrient inputs, energy-sensing pathways, lifespan variation and aging. Despite the role of metabolic enzymes in energy homeostasis and their metabolites as nutrient signals, little is known about how their gene expression impacts lifespan. In this report, we use P-element mutagenesis in Drosophila to study the effect on lifespan of reductions in expression of seven central metabolic enzymes, and contrast the effects on normal diet and dietary restriction. The major observation...

Data from: Bayesian hierarchical models suggest oldest known plant-visiting bat was omnivorous

Laurel R. Yohe, Paúl M. Velazco, Danny Rojas, Beth E. Gerstner, Nancy B. Simmons & Liliana M. Dávalos
The earliest record of plant visiting in bats dates to the Middle Miocene of La Venta, the world's most diverse tropical palaeocommunity. Palynephyllum antimaster is known from molars that indicate nectarivory. Skull length, an important indicator of key traits such as body size, bite force and trophic specialization, remains unknown. We developed Bayesian models to infer skull length based on dental measurements. These models account for variation within and between species, variation between clades, and...

Data from: Demography, traits, and vulnerability to urbanization: can we make generalizations?

Leone M. Brown & Catherine H. Graham
1. Human-induced land cover change threatens species diversity and ecosystem services. The rapid pace of current change makes predicting species’ declines imperative, but leaves little time for thorough study of all species. One solution is to make generalizations about species’ vulnerability to urbanization based on traits common among studied species in decline. 2. To date, most generalizations about traits associated with species’ declines in response to urbanization are based on presence or abundance, or detailed...

Data from: Facultative parthenogenesis in a critically endangered wild vertebrate

Andrew T. Fields, Kevin A. Feldheim, Gregg R. Poulakis & Demian D. Chapman
Facultative parthenogenesis — the ability of sexually reproducing species to sometimes produce offspring asexually — is known from a wide range of ordinarily sexually reproducing vertebrates in captivity, including some birds, reptiles and sharks 1, 2 and 3. Despite this, free-living parthenogens have never been observed in any of these taxa in the wild, although two free-living snakes were recently discovered each gestating a single parthenogen — one copperhead (Agkistrodon contortrix) and one cottonmouth (Agkistrodon...

Data from: Genetic diversity of white sharks, Carcharodon carcharias, in the northwest Atlantic and southern Africa

Shannon J. O'Leary, Kevin A. Feldheim, Andrew T. Fields, Lisa J. Natanson, Sabine Wintner, Nigel Hussey, Mahmood S. Shivji & Demian D. Chapman
The white shark, Carcharodon carcharias, is both one of the largest apex predators in the world and among the most heavily protected marine fish. Population genetic diversity is in part shaped by recent demographic history and can thus provide information complementary to more traditional population assessments, which are difficult to obtain for white sharks and have at times been controversial. Here, we use the mitochondrial control region and 14 nuclear-encoded microsatellite loci to assess white...

Registration Year

  • 2015

Resource Types

  • Dataset


  • Stony Brook University
  • Field Museum of Natural History
  • Grand Valley State University
  • Centre d'Ecologie Fonctionnelle et Evolutive
  • Princeton University
  • Université de Sherbrooke
  • University of Aveiro
  • Duke University
  • University of Georgia
  • City College of New York