Teague O'Mara

Teague O'Mara
Southeastern Louisiana University · Department of Biological Sciences

PhD Biological Anthropology; School of Human Evolution & Social Change Arizona State University

About

66
Publications
11,542
Reads
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581
Citations
Introduction
My research uncovers the social & physiological solutions that animals use in response to ecological unpredictability. I am interested in the behavioral and physiological strategies that animals use to compensate for their unpredictable environments -- from regulation of heart beats, to social foraging, to continental migration. My goal is to understand how individual physiology and ecology shape social information use, group behavioral responses, and ultimately the evolution of stable social groups in wild long-lived vertebrates.
Additional affiliations
May 2013 - present
Universität Konstanz
Position
  • PostDoc Position
May 2012 - April 2013
Smithsonian Tropical Research Institute
Position
  • PostDoc Position
January 2012 - present
Arizona State University

Publications

Publications (66)
Article
Full-text available
Environmental variability poses a range of challenges to foraging animals trying to meet their energetic needs. Where food patches are unpredictable but shareable, animals can use social information to locate patches more efficiently or reliably. However, resource unpredictability can be heterogeneous and complex. The behavioural strategies animals...
Article
Full-text available
Managing wildlife populations in the face of global change requires regular data on the abundance and distribution of wild animals but acquiring these over appropriate spatial scales in a sustainable way has proven challenging. Here we present the data from Snapshot USA 2020, a second annual national mammal survey of the United States of America. T...
Article
Full-text available
Migrating grazers and carnivores respond to seasonal changes in the environment and often match peaks in resource abundance. However, it is unclear if and how frugivorous animals use phenological events to time migration, especially in the tropics. The straw‐colored fruit bat (Eidolon helvum), Africa’s most gregarious fruit bat, forms large seasona...
Article
Full-text available
Space-based tracking technology using low-cost miniature tags is now delivering data on fine-scale animal movement at near-global scale. Linked with remotely sensed environmental data, this offers a biological lens on habitat integrity and connectivity for conservation and human health; a global network of animal sentinels of environmental change.
Article
Full-text available
Managing wildlife populations in the face of global change requires regular data on the abundance and distribution of wild animals, but acquiring these over appropriate spatial scales in a sustainable way has proven challenging. Here we present the data from Snapshot USA 2020, a second annual national mammal survey of the locations across 103 array...
Article
Full-text available
Background Many birds species range over vast geographic regions and migrate seasonally between their breeding and overwintering sites. Deciding when to depart for migration is one of the most consequential life-history decisions an individual may make. However, it is still not fully understood which environmental cues are used to time the onset of...
Preprint
Full-text available
Group foraging animals may change their spatial relationships in response to the resource landscape. The strength of social network ties across foraging groups could then reflect the energy balance of individual group members through their effect on foraging efficiency. Greater spear-nosed bats ( Phyllostomus hastatus ) live in social groups where...
Article
Full-text available
With the accelerating pace of global change, it is imperative that we obtain rapid inventories of the status and distribution of wildlife for ecological inferences and conservation planning. To address this challenge, we launched the SNAPSHOT USA project, a collaborative survey of terrestrial wildlife populations using camera traps across the Unite...
Article
During the day, flying animals exploit the environmental energy landscape by seeking out thermal or orographic uplift, or extracting energy from wind gradients.1, 2, 3, 4, 5, 6 However, most of these energy sources are not thought to be available at night because of the lower thermal potential in the nocturnal atmosphere, as well as the difficulty...
Data
A participatory monitoring programme of an exceptional modification of urban soundscapes during Covid-19 containment.
Article
Full-text available
Intraspecific competition in large aggregations of animals should generate density-dependent effects on foraging patterns. To test how large differences in colony size affect foraging movements, we tracked seasonal movements of the African straw-coloured fruit bat (Eidolon helvum) from four colonies that range from 4000 up to 10 million animals. Co...
Article
Full-text available
Small endothermic mammals have high metabolisms, particularly at cold temperatures. In the light of this, some species have evolved a seemingly illogical strategy: they reduce the size of the brain and several organs to become even smaller in winter. To test how this morphological strategy affects energy consumption across seasonally shifting ambie...
Article
Full-text available
Atmospheric conditions impact how animals use the aerosphere, and birds and bats should modify their flight to minimise energetic expenditure relative to changing wind conditions. To investigate how free-ranging straw-coloured fruit bats (Eidolon helvum) fly with changing wind support, we use data collected from bats fit with GPS loggers and an int...
Article
Full-text available
Animal migration has fascinated humans at least since Aristotle's time, but we only started to understand its details thanks to the famous "arrow storks" in the 19th century that returned to Europe with an arrow in their body, providing the first clues of African wintering sites. Bird migration has received a large amount of attention since then, b...
Article
Animal-mediated seed dispersal is a pivotal component of functioning forest ecosystems all over the globe. Animals that disperse seeds away from their parental plants increase the seeds’ chances of survival by releasing them from competition and specialised predators and so contribute to maintain the biodiversity of forests. Furthermore, seeds disp...
Article
Full-text available
Aerial habitats present a challenge to find food across a large potential search volume, particularly for insectivorous bats that rely on echolocation calls with limited detection range and may forage at heights over 1000 m. To understand how bats use vertical space, we tracked one to five foraging flights of eight common noctules (Nyctalus noctula...
Article
The tent-making bat hepatitis B virus (TBHBV) is a hepadnavirus closely related to human hepatitis B virus. The ecology of TBHBV is unclear. We show that it is widespread and highly diversified in Peters’ tent-making bats (Uroderma bilobatum) within Panama, while local prevalence varied significantly between sample sites, ranging from 0 to 14.3%. F...
Article
Full-text available
Bats transition from flightless, milk-sustained infants to volant, foraging juveniles in the span of a few weeks to a few months. This rapid development is accompanied by fast growth and weight gain, but behavioral development remains poorly understood. We addressed development of maternal support and pup independence for Peters’ tent-making bat (U...
Data
Instantaneous scan sampling of mother and pup behavior in day roost. (CSV)
Data
Focal sampling of forearm pulsing behavior. (CSV)
Data
Frequency of pups being carried by mother or flying on their own for arrival to and departure from roost. (CSV)
Data
Survey of mothers and pups roosting under houses in Gamboa. (CSV)
Data
Latency to depart from roost for each mother, mother-pup pair, or pup. (CSV)
Data
Focal sampling of parturition behavior. (CSV)
Data
Mass and forearm length of pups caught in Gamboa. (CSV)
Article
Full-text available
Reduction in metabolic rate and body temperature is a common strategy for small endotherms to save energy. The daily reduction in metabolic rate and heterothermy, or torpor, is particularly pronounced in regions with a large variation in daily ambient temperature. This applies most strongly in temperate bat species (order Chiroptera), but it is les...
Data
ESM Figure S2. Respirometry relationships between heart rate and temperature measures
Article
Full-text available
The Neotropical fringe-lipped bat, Trachops cirrhosus, is a generalist predator that hunts frogs and insects by homing in on their mating calls. Although research has examined cognition and prey preferences of bats in captivity, little is known of the foraging or roosting behaviour of this species in the wild. We radio tracked six T. cirrhosus indi...
Data
Mean ± sd per bat for heart rates (frequency in beats per minutes, fH) and energy consumption (kilojoules per hour, kJ h−1and Watts, W) used during flight, roosting at night, and resting during the day. N gives the number of observations of heart rate observations used to calculate values.
Data
Individual fitted equations of a 1 pool exponential model for incorporation of ingested δ13C into breath carbon dioxide. 1 pool model: δ13C breath(t) = δ13C breath(∞) + [δ13Cbreath(0) – δ13C breath(∞)] e-t/k
Article
Full-text available
Active flight requires the ability to efficiently fuel bursts of costly locomotion while maximizing energy conservation during non-flying times. We took a multi-faceted approach to estimate how fruit-eating bats (Uroderma bilobatum) manage a high-energy lifestyle fueled primarily by fig juice. Miniaturized heart rate telemetry shows that they use a...
Article
Full-text available
Migratory decisions in birds are closely tied to environmental cues and fat stores, but it remains unknown if the same variables trigger bat migration. To learn more about the rare phenomenon of bat migration, we studied departure decisions of female common noctules (Nyctalus noctula) in southern Germany. We did not find the fattening period that m...
Article
Full-text available
Small non-migratory mammals with Northern distribution ranges apply a variety of behavioural and physiological wintering strategies. A rare energy saving strategy is Dehnel's phenomenon, involving a reduction and later regrowth of the body, several organs and parts of the skeleton in red-toothed shrews (Soricidae). The size extremes coincide with m...
Article
Full-text available
Within the large order of bats, sexual size dimorphism measured by forearm length and body mass is often female-biased. Several studies have explained this through the effects on load carrying during pregnancy, intrasexual competition, as well as the fecundity and thermoregulation advantages of increased female body size. We hypothesized that wing...
Data
Capture data, measurements, and 2D point placement (X,Y) for Nyctalus noctula. Not all individuals had all aspects of data recorded for them. NA indicates no data collected for that variable. The 65 variables are: Bat PIT tag identity; bat mass; bat sex; measured forearm length; body condition; bat photo identity; coordinates scaled; X1; Y1; X2; Y2...
Article
Full-text available
Animals use social information from conspecifics as an extended sensor network to monitor their environment and may bias their preference to information from particular individuals, e.g. individuals they are most familiar with. This may be especially important for energy-constrained foragers, such as the frugivorous Peter's tent-making bat, Uroderm...
Article
Full-text available
The relationships between group size, survival, and longevity vary greatly among social species. Depending on demographic and ecological circumstances, there are both positive and negative effects of group size variation on individual survival and longevity. For socially foraging species in particular there may be an optimal group size that predict...
Article
Full-text available
Bat immune systems may allow them to respond to zoonotic agents more efficiently than other mammals. As the first line of defence, the taxonomically conserved acute phase immune reaction of leucocytosis and fever is crucial for coping with infections, but it is unknown if this response is a key constituent to bat immunological success. We investiga...
Article
Full-text available
Eavesdropping predators sometimes show preferences for certain prey signal variants, yet the ultimate and proximate reasons for such preferences are often unclear. The fringe-lipped bat, Trachops cirrhosus, eavesdrops on the advertisement calls of male túngara frogs, Physalaemus pustulosus, and shows a marked preference for complex (adorned) calls...
Article
Full-text available
For over 50 years, ring-tailed lemurs have been studied continuously in the wild. As one of the most long-studied primate species, the length and breadth of their study is comparable to research on Japanese macaques, baboons and chimpanzees. They are also one of the most broadly observed of all primates, with comprehensive research conducted on the...
Article
Full-text available
The extended primate juvenile period has been linked to interactions between feeding ecology and sociality. However, accumulating field data on juvenile primates suggest variation in the linkages between foraging efficiency, group foraging and social behaviour. In many non-human primates, juvenile ability (strength, coordination and motor skills) d...
Article
Full-text available
Long-distance migration is a rare phenomenon in European bats. Genetic analyses and banding studies show that females can cover distances of up to 1,600 km, whereas males are sedentary or migrate only short distances. The onset of this sex-biased migration is supposed to occur shortly after rousing from hibernation and when the females are already...
Article
Ring-tailed lemurs (Lemur catta) at the Bezà Mahafaly Special Reserve (BMSR), Madagascar display a high frequency of individuals with notable and sometimes extreme tooth wear. Adult lemurs display a range of tooth wear even among individuals of the same age, but we do not know at what age this variation first appears. This study's goal was to deter...
Article
Full-text available
Sex differences in feeding ecology may develop in response to fluctuations in physiological costs to females over their reproductive cycles, or to sexual size dimorphism, or function to minimize feeding competition within a group via resource partitioning. For most mammal species, it is unknown how these factors contribute to sex differences in fee...
Article
Full-text available
The ability to discriminate information quality from multiple social partners may be essential to animals that use social cues in deciding when, where, and what to eat. This may be particularly important in species that rely on ephemeral and widely dispersed resources. We show that tent-making bats, Uroderma bilobatum, socially acquire preferences...
Article
Full-text available
Radiotelemetry and satellite-based telemetry approaches are essential to describe the behaviour and biology of animals. This is especially true for bats, whose small size and cryptic lifestyles make them challenging to study. However, only a handful of studies have evaluated how transmitter mass and the attachment method affect bat behaviour or hea...
Article
Full-text available
As they grow, young individuals can use both social and individual learning strategies to develop species- typical feeding ecology, and the utility of these strategies may vary phylogenetically and with envi- ronmental stability. Focused learning from mothers and other group members is critical in monkeys, with behaviours such as co-feeding playing...
Article
Full-text available
Three fundamental ontogenetic pathways lead to the development of size differences between males and females. Males and females may grow at the same rate for different durations (bimaturism), grow for the same duration at different rates, or grow at a mix of rate and duration differences. While patterns of growth and the development of adult body s...

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Project (1)
Project
This project intends to be a compilation of all the works on the European free-tailed bat. In time, we hope to have a thorough and systematic compilation on the species. Please feel free to add or suggest any relevant works.