63 Works

Data from: Effective implementation of age restrictions increases selectivity of sport hunting of the African lion

Colleen M. Begg, Jennifer R. B. Miller & Keith S. Begg
1. Sport hunting of wildlife can play a role in conservation but can also drive population declines if not managed sustainably. Previous simulation modelling found that large felid species could theoretically be hunted sustainably by restricting harvests to older individuals that have likely reproduced. Several African countries currently use age-based hunting for lions although the outcomes have yet to be evaluated in a wild population. 2. Here we provide the first empirical evidence that a...

Data from: Fitness consequences of occasional outcrossing in a functionally asexual plant (Oenothera biennis)

John L. Maron, Marc T. J. Johnson, Amy P. Hastings & Anurag A. Agrawal
Many clonal organisms occasionally outcross, but the long-term consequences of such infrequent events are often unknown. During five years, representing three to five plant generations, we followed 16 experimental field populations of the forb, Oenothera biennis, originally planted with the same 18 original genotypes. Oenothera biennis usually self-fertilizes, which due to its genetic system (Permanent Translocation Heterozygosity), results in seeds that are clones of the maternal plant. However, rare outcrossing produces genetically novel offspring (but...

Data from: Cooperative breeding influences the number and type of vocalizations in avian lineages

Gavin M. Leighton
Although communicative complexity is often predicted to correlate with social complexity in animal societies, few studies have employed large-scale comparative analyses to test whether socially complex species have more complex systems of communication. I tested this social complexity hypothesis in birds (Class: Aves) using the large amount of natural history information that describes both vocal repertoire and social system in these species. To do so, I marshalled data from primary and secondary records of avian...

Data from: Heritable variation in circulating glucocorticoids and endocrine flexibility in a free-living songbird

Jocelyn M. Stedman, Kelly K. Hallinger, David W. Winkler & Maren N. Vitousek
Phenotypic flexibility is a central way that organisms cope with challenging and changing environments. As endocrine signals mediate many phenotypic traits, heritable variation in hormone levels, or their context-dependent flexibility, could present an important target for selection. Several studies have estimated the heritability of circulating glucocorticoid levels under acute stress conditions, but little is known about the potential for either baseline hormone levels or rapid endocrine flexibility to evolve. Here we assessed the potential for...

Data from: Domesticated honeybees facilitate interspecific hybridization between two Taraxacum congeners

Youhong Peng, Yuran Dong, Haigen Xu, Xinqiang Xi, Karl J. Niklas & Shucun Sun
1. Interspecific hybridization is common in plants under natural conditions, but the ecological mechanisms underlying when and how it happens have not fully been understood. 2. Taraxacum calanthodium and T. lugubre are two herbaceous annals co-occurring in alpine meadows of the eastern Tibetan Plateau that share the same pollinators including domestic honeybees during their overlapping flowering times. Because honeybees tend to visit flowers less discriminatively when bee densities are high, we hypothesized that intense apiculture...

Data from: Campylobacter jejuni infection associated with relatively poor condition and low survival in a wild bird

Conor C. Taff & Andrea K. Townsend
Campylobacter jejuni is the most common foodborne pathogen in industrialized countries. Most human infections come from contaminated poultry, but wild birds are also known to harbor C. jejuni. Wild birds are often described as asymptomatic carriers, but this assumption is based on domestic poultry research. We studied the effects of C. jejuni infection on body condition and survival of adult and nestling American crows Corvus brachyrhynchos in Davis, California. Previous work demonstrated that more than...

Data from: Seagrass ecosystems reduce exposure to bacterial pathogens of humans, fishes and invertebrates

Joleah B. Lamb, Jeroen A. J. M. Van De Water, David G. Bourne, Craig Altier, Margaux Y. Hein, Evan A. Fiorenza, Nur Abu, Jamaluddin Jompa & C. Drew Harvell
Plants are important in urban environments for removing pathogens and improving water quality. Seagrass meadows are the most widespread coastal ecosystem on the planet. Although these plants are known to be associated with natural biocide production, they have not been evaluated for their ability to remove microbiological contamination. Using amplicon sequencing of the 16S ribosomal RNA gene, we found that when seagrass meadows are present, there was a 50% reduction in the relative abundance of...

Data from: Fluff-thieving birds sabotage seed dispersal

Vanya G. Rohwer, Anton Pauw & Paul R. Martin
Characterizing many species interactions as mutualisms can be misleading because some members of the interaction derive greater fitness benefits at the expense of other members. We provide detailed natural history data on a suspected bird–plant mutualism in South Africa where many species of birds use fluffy Eriocephalus seed material to construct their nests, potentially dispersing seeds for the plant. We focus on a common bird, Prinia maculosa, which invests heavily in gathering Eriocephalus material. Prinias...

Data from: Admixture mapping in a hybrid zone reveals loci associated with avian feather coloration

Alan Brelsford, David P.L. Toews, Darren E. Irwin & David P. L. Toews
Identifying the genetic bases for color patterns has provided important insights into the control and expression of pigmentation and how these characteristics influence fitness. However, much more is known about the genetic bases for traits based on melanin pigments than for traits based on another major class of pigments, carotenoids. Here we use natural admixture in a hybrid zone between Audubon’s and myrtle warblers (Setophaga coronata auduboni / S. c. coronata) to identify genomic regions...

Data from: Duetting behavior varies with sex, season, and singing role in a tropical oriole (Icterus icterus)

Karan J. Odom, David M. Logue, Colin E. Studds, Michelle K. Monroe, Susanna K. Campbell & Kevin E. Omland
Females and males of many animals combine their vocalizations into coordinated acoustic duets. Duets can mediate both cooperation and conflict between partners, and are common in tropical, sedentary species that may use duets for multiple functions year-round. To elucidate the full range of duet functions, we need to study the individual-level behaviors that generate duets throughout the year. We evaluated multiple functions of duetting behavior in female and male Venezuelan troupials (Icterus icterus) during the...

Data from: Behavioral tactic predicts preoptic-hypothalamic gene expression more strongly than developmental morph in fish with alternative reproductive tactics

Joel A. Tripp, Ni Y. Feng & Andrew H. Bass
Reproductive success relies on the coordination of social behaviors, such as territory defense, courtship, and mating. Species with extreme variation in reproductive tactics are useful models for identifying the neural mechanisms underlying social behavior plasticity. The plainfin midshipman (Porichthys notatus) is a teleost fish with two male reproductive morphs that follow widely divergent developmental trajectories and display alternative reproductive tactics (ARTs). Type I males defend territories, court females, and provide paternal care, but will resort...

Data from: Genetic diversity and gene flow decline with elevation in montane mayflies

Nicholas R. Polato, Miranda M. Gray, Brian A. Gill, C. Guilherme Becker, K.L. Casner, Alex S. Flecker, Boris C. Kondratief, Andrea C. Encalada, N. LeRoy Poff, W. Chris Funk & Kelly R. Zamudio
Montane environments around the globe are biodiversity ‘hotspots’ and important reservoirs of genetic diversity. Montane species are also typically more vulnerable to environmental change than their low-elevation counterparts due to restricted ranges and dispersal limitations. Here we focus on two abundant congeneric mayflies (Baetis bicaudatus and B. tricaudatus) from montane streams over an elevation gradient spanning 1400 m. Using single-nucleotide polymorphism genotypes, we measured population diversity and vulnerability in these two species by: (i) describing...

Data from: Relaxation of herbivore-mediated selection drives the evolution of genetic covariances between plant competitive and defense traits

Akane Uesugi, Tim Connallon, Andre Kessler & Keyne Monro
Insect herbivores are important mediators of selection on traits that impact plant defense against herbivory and competitive ability. Although recent experiments demonstrate a central role for herbivory in driving rapid evolution of defense and competition-mediating traits, whether and how herbivory shapes heritable variation in these traits remains poorly understood. Here, we evaluate the structure and evolutionary stability of the G matrix for plant metabolites that are involved in defense and allelopathy in the tall goldenrod,...

Registration Year

  • 2017
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Resource Types

  • Dataset
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Affiliations

  • Cornell University
    63
  • University of Oxford
    4
  • Sao Paulo State University
    3
  • University of Michigan-Ann Arbor
    3
  • University of New Hampshire
    3
  • University of Cape Town
    3
  • Hasanuddin University
    2
  • University of the Western Cape
    2
  • Panthera Corporation
    2
  • University of Connecticut
    2