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Soulsbury, C.

Publications and source records attributed to Soulsbury, C..

2 recordsLinked to original sources

Spatial distribution of human-wildlife interactions predicts coexistence with a global urban carnivore, the red fox

Despite growing recognition that spatial factors such as urbanisation and geographic region shape human-wildlife interactions, few studies have examined - on a large geographic scale - how spatial factors reflect the subjective human dimensions to those interactions, including public attitudes and self-reported encounters with wildlife. Understanding how spatial factors shape these dimensions may have implications for urban rewilding because they can reflect local tolerance of animals and may potentially predict human-wildlife interactions. We examined how urbanisation type and geographic region are related to peoples attitudes, reported encounters (public feeding and bin-raiding), and reported use of control measures towards the worlds most urbanised terrestrial carnivore, the red fox, Vulpes vulpes. Online survey data were obtained from 1,275 participants in the United Kingdom. Reports of fox bin-raiding were associated with increased reports of wildlife feeding, more negative attitudes towards foxes, and greater reported use of professional and do-it-yourself control measures. However, the role of spatial factors varied among these relationships. Specifically, urbanisation and geographic region significantly predicted reports of fox binraiding, with urban residents - particularly from London - more likely to report such behaviour. Urbanisation predicted reports of wildlife feeding and use of professional pest control of foxes within their area. Geographic region predicted reports of do-it-yourself control measures. Neither urbanisation nor geographic region significantly predicted public attitudes towards foxes. Together, these findings highlight the complex interactions between spatial context and the subjective human dimensions of wildlife interactions, underscoring the importance of nuanced, context-specific strategies to support human-wildlife coexistence and urban rewilding initiatives. HighlightsO_LIUrban rewilding success depends on public tolerance of local wildlife. C_LIO_LIWe studied spatial factors and subjective human dimensions of fox interactions. C_LIO_LIReports of bin-raiding, wildlife feeding, fox-related attitudes, and pest control covaried. C_LIO_LIThe role of urbanisation and geography varied in predicting these reports. C_LIO_LISuch spatial complexity should be considered in designing urban rewilding strategies. C_LI

ecology↗

The ultrasound guide: katydid ear pinnae code for bat call detection

Early predator detection is a key component of the predator-prey arms race, and has driven the evolution of multiple animal hearing systems. Katydids (Insecta) have sophisticated ears, each consisting of paired tympana on each foreleg that receive sound directly externally, and internally via a narrowing ear canal through the acoustic spiracle. These ears are pressure-time difference receivers capable of sensitive and accurate directional hearing across a wide frequency range, despite the small size of katydids. Many katydid species have cuticular pinnae which form cavities around the outer tympanal surfaces, but their function is unknown. We investigated pinnal function in the katydid Copiphora gorgonensis by combining experimental biophysics and numerical modelling using 3D ear geometries. Results show that the pinnae in C. gorgonensis do not assist in directional hearing for specific call frequencies, but instead pinnae act as ultrasound detector devices. Pinnae induced large sound pressure gains that enhanced sound detection at high ultrasonic frequencies (> 60 kHz), matching the echolocation range of co-occurring insectivorous bats. Comparing pinnal mechanics of sympatric katydid species supports these findings, and suggests that pinnae evolved in katydids primarily for enhanced predator detection. Audiograms (both behavioural and neural) and tympanal cavity resonances obtained from living specimens corroborate our findings.

biophysics↗