Trachops cirrhosus

Cramer, Michael J.; Willig, Michael R.; Jones, Clyde

doi:10.1644/1545-1410(2001)656<0001:tc>2.0.co;2

Cited by 35 publications

(35 citation statements)

References 32 publications

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“…Guilds are inherently artificial as many of these species (particularly among frugivores and carnivores) are largely omnivorous, and species were placed according to best fit (Allen, ; Humphrey et al., ; Simberloff & Dayan, ). Here, we define carnivores as species which specialized feeding strategies and/or anatomical or physiological adaptations to feed on vertebrates (as opposed to species which may opportunistically feed on vertebrates ( e.g., Phyllostomus discolor and Micronycteris microtis ; Norberg & Fenton, ; Fenton et al., ; Cramer, Willig & Jones, ). Therefore, we predict their δ 15 N to be higher than other animalivores (i.e., obligate insectivores).…”

Section: Methodsmentioning

confidence: 99%

Community structure of a Neotropical bat fauna as revealed by stable isotope analysis: Not all species fit neatly into predicted guilds

et al. 2019

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Neotropical bat communities are among the most diverse mammal communities in the world, and a better understanding of these assemblages may permit inferences about how so many species coexist. While broad trophic guilds (e.g., frugivore, insectivore) of bats are recognized, details of diet and similarities among species remain largely unknown. We used stable isotope ratios of carbon (δ13C) and nitrogen (δ15N) to characterize the community structure of a diverse Neotropical bat fauna from Belize to test predictions of niche theory and the competitive exclusion principle. We predicted that (1) interspecific variation in isotopic overlap would be greater within guilds than between guilds, and (2) no two sympatric populations would have isotopic niches that overlap completely, unless there is variation along some other axis (e.g., temporal, spatial). We additionally tested body size as an explanatory metric of potential overlap and predicted that larger‐bodied animals would have greater niche breadths. Results suggest that while guild‐level characterizations of communities are at least somewhat informative, there are multiple examples of intra‐ and inter‐guild species pairs with significantly overlapping isotopic niches, suggesting that, counter to predictions, they may compete for resources. Understanding the trophic structure of animal communities is fundamental to conservation and management of endangered species and ecosystems and important for evolutionary studies, and stable isotope analyses can provide key insights as well as informing hypotheses of the diet of species that are not well known. Abstract in Spanish is available with online material.

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Section: Methodsmentioning

confidence: 99%

Community structure of a Neotropical bat fauna as revealed by stable isotope analysis: Not all species fit neatly into predicted guilds

et al. 2019

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“…Trachops cirrhosus roosts in mixed sex groups of variable size (Cramer et al. ). In central Panama, fringe‐lipped bats can be seen foraging at ponds where they hunt for calling frogs (Tuttle and Ryan ).…”

Section: Methodsmentioning

confidence: 99%

“…The second field test (iii) was conducted at the Smithsonian Tropical Research Institute in Gamboa, Panama (09°07 0 N, 79°42 0 W) and focused on social groups of the fringe-lipped bat (T. cirrhosus). Trachops cirrhosus roosts in mixed sex groups of variable size (Cramer et al 2001). In central Panama, fringe-lipped bats can be seen foraging at ponds where they hunt for calling frogs (Tuttle and Ryan 1981).…”

Section: Focus Species and Study Sites Of Field Tests On Live Batsmentioning

confidence: 99%

Automated proximity sensing in small vertebrates: design of miniaturized sensor nodes and first field tests in bats

Ripperger

Josic

Hierold

et al. 2016

Ecology and Evolution

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Social evolution has led to a stunning diversity of complex social behavior, in particular in vertebrate taxa. Thorough documentation of social interactions is crucial to study the causes and consequences of sociality in gregarious animals. Wireless digital transceivers represent a promising tool to revolutionize data collection for the study of social interactions in terms of the degree of automation, data quantity, and quality. Unfortunately, devices for automated proximity sensing via direct communication among animal‐borne sensors are usually heavy and do not allow for the investigation of small animal species, which represent the majority of avian and mammalian taxa. We present a lightweight animal‐borne sensor node that is built from commercially available components and uses a sophisticated scheme for energy‐efficient communication, with high sampling rates at relatively low power consumption. We demonstrate the basic functionality of the sensor node under laboratory conditions and its applicability for the study of social interactions among free‐ranging animals. The first field tests were performed on two species of bats in temperate and tropical ecosystems. At <2 g, this sensor node is light enough to observe a broad spectrum of taxa including small vertebrates. Given our specifications, the system was especially sensitive to changes in distance within the short range (up to a distance of 4 m between tags). High spatial resolution at short distances enables the evaluation of interactions among individuals at a fine scale and the investigation of close contacts. This technology opens new avenues of research, allowing detailed investigation of events associated with social contact, such as mating behavior, pathogen transmission, social learning, and resource sharing. Social behavior that is not easily observed becomes observable, for example, in animals living in burrows or in nocturnal animals. A switch from traditional methods to the application of digital transceiver chips in proximity sensing offers numerous advantages in addition to an enormous increase in data quality and quantity. For future applications, the platform allows for the integration of additional sensors that may collect physiological or environmental data. Such information complements social network studies and may allow for a deeper understanding of animal ecology and social behavior.

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“…It roosts in caves, hollow trees, road culverts, and buildings in groups of up to 50 individuals (Hall & Dalquest, ), where both sexes can be encountered roosting together (Nowak, ). Trachops cirrhosus hunts frogs and various insects (Cramer et al., ; Tuttle & Ryan, ) and its relatively small foraging grounds (3–12 ha) are typically located 200 m to 1.6 km from its roost (Jones, Hamsch, Page, Kalko, & O'Mara, ; Kalko, Friemel, Handley, & Schnitzler, ). Although numerous studies have been conducted on the predatory preferences and the foraging behavior of T. cirrhosus (reviewed in Page & Jones, ), very little is known about dispersal and population dynamics in this species.…”

Section: Introductionmentioning

confidence: 99%

Male‐biased dispersal and the potential impact of human‐induced habitat modifications on the Neotropical batTrachops cirrhosus

Halczok

Brändel

Flores

et al. 2018

Ecology and Evolution

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Gene flow, maintained through natal dispersal and subsequent mating events, is one of the most important processes in both ecology and population genetics. Among mammalian populations, gene flow is strongly affected by a variety of factors, including the species’ ability to disperse, and the composition of the environment which can limit dispersal. Information on dispersal patterns is thus crucial both for conservation management and for understanding the social system of a species. We used 16 polymorphic nuclear microsatellite loci in addition to mitochondrial DNA sequences (1.61 kbp) to analyse the population structure and the sex‐specific pattern of natal dispersal in the frog‐eating fringe‐lipped bat, Trachops cirrhosus, in Central Panama. Our study revealed that—unlike most of the few other investigated Neotropical bats—gene flow in this species is mostly male‐mediated. Nevertheless, distinct genetic clusters occur in both sexes. In particular, the presence of genetic differentiation in the dataset only consisting of the dispersing sex (males) indicates that gene flow is impeded within our study area. Our data are in line with the Panama Canal in connection with the widening of the Río Chagres during the canal construction acting as a recent barrier to gene flow. The sensitivity of T. cirrhosus to human‐induced habitat modifications is further indicated by an extremely low capture success in highly fragmented areas. Taken together, our genetic and capture data provide evidence for this species to be classified as less mobile and thus vulnerable to habitat change, information that is important for conservation management.

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Trachops cirrhosus

Cited by 35 publications

References 32 publications

Community structure of a Neotropical bat fauna as revealed by stable isotope analysis: Not all species fit neatly into predicted guilds

Community structure of a Neotropical bat fauna as revealed by stable isotope analysis: Not all species fit neatly into predicted guilds

Automated proximity sensing in small vertebrates: design of miniaturized sensor nodes and first field tests in bats

Male‐biased dispersal and the potential impact of human‐induced habitat modifications on the Neotropical batTrachops cirrhosus

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