Behavioral responses to echolocation calls from sympatric heterospecific bats: implications for interspecific competition

Li, Yuanyuan; Wang, Jing; Metzner, Walter; Luo, Bo; Jiang, Tinglei; Yang, Siliu; Shi, Limin; Huang, Xiaobin; Yue, Xinke; Feng, Jiang

doi:10.1007/s00265-013-1680-9

Cited by 23 publications

(20 citation statements)

References 47 publications

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“…Coexisting species frequently use different foraging locations to avoid excessive competition (Li et al. ). The low prevalence of P. pipistrellus in locations containing a high proportion of water may reflect that this species, as a habitat generalist, is able to use a wide variety of habitat types compared to P. pygmaeus .…”

Section: Discussionmentioning

confidence: 99%

Differential responses of cryptic bat species to the urban landscape

Lintott

Barlow

Briggs

et al. 2016

Ecology and Evolution

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Urbanization is a key global driver in the modification of land use and has been linked to population declines even in widespread and relatively common species. Cities comprise a complex assortment of habitat types yet we know relatively little about the effects of their composition and spatial configuration on species distribution. Although many bat species exploit human resources, the majority of species are negatively impacted by urbanization. Here, we use data from the National Bat Monitoring Programme, a long‐running citizen science scheme, to assess how two cryptic European bat species respond to the urban landscape. A total of 124 × 1 km2 sites throughout Britain were surveyed. The landscape surrounding each site was mapped and classified into discrete biotope types (e.g., woodland). Generalized linear models were used to assess differences in the response to the urban environment between the two species, and which landscape factors were associated with the distributions of P. pipistrellus and P. pygmaeus. The relative prevalence of P. pygmaeus compared to P. pipistrellus was greater in urban landscapes with a higher density of rivers and lakes, whereas P. pipistrellus was frequently detected in landscapes comprising a high proportion of green space (e.g., parklands). Although P. pipistrellus is thought to be well adapted to the urban landscape, we found a strong negative response to urbanization at a relatively local scale (1 km), whilst P. pygmaeus was detected more regularly in wooded urban landscapes containing freshwater. These results show differential habitat use at a landscape scale of two morphologically similar species, indicating that cryptic species may respond differently to anthropogenic disturbance. Even species considered relatively common and well adapted to the urban landscape may respond negatively to the built environment highlighting the future challenges involved in maintaining biodiversity within an increasingly urbanized world.

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Section: Discussionmentioning

confidence: 99%

Differential responses of cryptic bat species to the urban landscape

Lintott

Barlow

Briggs

et al. 2016

Ecology and Evolution

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“…Since echolocation pulses emitted by conspecifics are familiar, they may even have a calming effect on conspecifics (Li et al, 2014; Schuchmann and Siemers, 2010). For these reasons as well, we assumed that bats would feed on the side where echolocation sounds were being played back.…”

Section: Resultsmentioning

confidence: 99%

Using sounds for making decisions: greater tube-nosed bats prefer antagonistic calls over non-communicative sounds when feeding

et al. 2016

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Bats vocalize extensively within different social contexts. The type and extent of information conveyed via their vocalizations and their perceptual significance, however, remains controversial and difficult to assess. Greater tube-nosed bats, Murina leucogaster, emit calls consisting of long rectangular broadband noise burst (rBNBl) syllables during aggression between males. To experimentally test the behavioral impact of these sounds for feeding, we deployed an approach and place-preference paradigm. Two food trays were placed on opposite sides and within different acoustic microenvironments, created by sound playback, within a specially constructed tent. Specifically, we tested whether the presence of rBNBl sounds at a food source effectively deters the approach of male bats in comparison to echolocation sounds and white noise. In each case, contrary to our expectation, males preferred to feed at a location where rBNBl sounds were present. We propose that the species-specific rBNBl provides contextual information, not present within non-communicative sounds, to facilitate approach towards a food source.

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“…Interrupting or inconspicuously using echolocation may benefit bats in more ways than stealthily approaching prey. In both foraging and social contexts, bats are known to change their echolocation calls or stop echolocating when other bats (including individuals of different species) are nearby, possibly sometimes for cooperative reasons (Chiu & Moss, ; Chiu, Xian, & Moss, ; Li et al., ); reasons for this type of “silent behavior” remain uncertain.…”

Section: Introductionmentioning

confidence: 99%

Do you hear what I see? Vocalization relative to visual detection rates of Hawaiian hoary bats (Lasiurus cinereus semotus)

Gorresen

Cryan

Montoya‐Aiona³

et al. 2017

Ecology and Evolution

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Bats vocalize during flight as part of the sensory modality called echolocation, but very little is known about whether flying bats consistently call. Occasional vocal silence during flight when bats approach prey or conspecifics has been documented for relatively few species and situations. Bats flying alone in clutter‐free airspace are not known to forgo vocalization, yet prior observations suggested possible silent behavior in certain, unexpected situations. Determining when, why, and where silent behavior occurs in bats will help evaluate major assumptions of a primary monitoring method for bats used in ecological research, management, and conservation. In this study, we recorded flight activity of Hawaiian hoary bats (Lasiurus cinereus semotus) under seminatural conditions using both thermal video cameras and acoustic detectors. Simultaneous video and audio recordings from 20 nights of observation at 10 sites were analyzed for correspondence between detection methods, with a focus on video observations in three distance categories for which accompanying vocalizations were detected. Comparison of video and audio detections revealed that a high proportion of Hawaiian hoary bats “seen” on video were not simultaneously “heard.” On average, only about one in three visual detections within a night had an accompanying call detection, but this varied greatly among nights. Bats flying on curved flight paths and individuals nearer the cameras were more likely to be detected by both methods. Feeding and social calls were detected, but no clear pattern emerged from the small number of observations involving closely interacting bats. These results may indicate that flying Hawaiian hoary bats often forgo echolocation, or do not always vocalize in a way that is detectable with common sampling and monitoring methods. Possible reasons for the low correspondence between visual and acoustic detections range from methodological to biological and include a number of biases associated with the propagation and detection of sound, cryptic foraging strategies, or conspecific presence. Silent flight behavior may be more prevalent in echolocating bats than previously appreciated, has profound implications for ecological research, and deserves further characterization and study.

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Behavioral responses to echolocation calls from sympatric heterospecific bats: implications for interspecific competition

Cited by 23 publications

References 47 publications

Differential responses of cryptic bat species to the urban landscape

Differential responses of cryptic bat species to the urban landscape

Using sounds for making decisions: greater tube-nosed bats prefer antagonistic calls over non-communicative sounds when feeding

Do you hear what I see? Vocalization relative to visual detection rates of Hawaiian hoary bats (Lasiurus cinereus semotus)

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