PHYLLOSTOMID BATS
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Patterns of Sexual Dimorphism and Mating Systems

6/12/2020

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Danielle M. Adams, Christopher Nicolay, and Gerald S. Wilkinson

Of the 216 species of phyllostomid bats, fewer than 10% have had their mating systems studied in any great detail; however, some species exhibit mating systems ranging from apparent monogamy to extreme polygyny. Paternity studies reveal that the social mating system is generally indicative of the genetic mating system although in some cases, subordinate males father some offspring. These findings suggest that mate selection can involve both male competition and female choice. To estimate the strength of precopulatory and postcopulatory sexual selection, we use measures of sexual dimorphism in relative body mass and canine length as indicators of direct male competition, and relative testes mass as a proxy for sperm competition. We then evaluate the influence of aggregation size and permanence of the roosting structure on the intensity of sexual selection using phylogenetically-informed analyses. Even though females are often larger than males, male-biased sexual dimorphism for relative mass and canine length is widespread and associated with large roosting aggregations. In contrast, sperm competition is greatest in species with intermediate-sized aggregations. These patterns of sexual dimorphism are largely consistent with what is known about phyllostomid mating systems, but exceptions provide potential opportunities for future study.
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    Theodore H. Fleming, Liliana M. Dávalos, & Marco A. R. Mello

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    Keywords

    All
    Adaptation
    Adaptive Radiation
    Aerodynamics
    Agribusiness
    Andes
    Animalivorous
    Basal Metabolic Rate
    Bat Conservation
    Bat Ecology
    Bat Pollination
    Behavioral Ecology
    Biodiversity
    BioGeoBEARS
    Biogeography
    Biological Diversity
    Biomechanics
    Body Size
    Brain Evolution
    Brazil
    Canines
    Cave Protection
    Chiropterophily
    Classification
    Climatic Changes
    Coevolution
    Community Ecology
    Community Structure
    Conservation
    Continuous Character Optimization
    Cooperation
    Desmodus
    Diaemus
    Diet
    Dietary Shifts
    Dietary Specialization
    Diet Selection
    Digestive Physiology
    Diphylla
    Dispersal
    Diversification
    Diversity Gradients
    Drift
    Echolocation
    Ecological Networks
    Ecological Niche Modeling
    Ecological Theory Of Adaptive Radiation
    Education
    Elastin
    Emerging Diseases
    Emerging Threats
    Evolutionary Mechanisms
    Excretory Physiology
    Extrinsic Threats
    Female Choice
    Flight
    Foraging Ecology
    Foraging Strategy
    Forest Loss
    Fossils
    Frugivory
    Generalist
    Geological Changes
    Gleaning Insectivory
    Gondwana
    Great American Interchange
    Habitat Loss
    Interaction Networks
    Intestinal Enzymes
    Kidney Structure
    Life History Theory
    Lonchorhina
    Longevity
    Male Competition
    Metabolic Physiology
    Micronycterinae
    Monestrus
    Morphology
    Movement Ecology
    Musculoskeletal
    Nectarivory
    Neotropics
    Network Science
    Neuroanatomy
    New World
    Noctilionoidea
    Ornstein-Uhlenbeck Models
    Oxidative Metabolism
    Past Character Displacement
    Phyletic Trends
    Phyllostomidae
    Phyllostominae
    Phylogenetic Constraints
    Phylogeny
    Polyestrus
    Predator
    Roost Disturbance
    Roosting Behavior
    Roosts
    Sanguinivory
    Sensory
    Sensory Systems
    Sexual Selection
    Size At Birth
    Skin
    Specialization
    Speciation
    Species Description
    Species Interactions
    Sperm Competition
    Taxonomic Discovery
    Trophic Level
    Wing Morphology
    Wings

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