Search Results - "RATCLIFFE, John"

Convergent acoustic field of view in echolocating bats by Jakobsen, Lasse, Ratcliffe, John M., Surlykke, Annemarie

“…Studying six vespertilionid bat species of different sizes to investigate the reason why smaller bats have higher frequency echolocation calls, a model is put…”
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Evolutionary escalation: the bat-moth arms race by Ter Hofstede, Hannah M, Ratcliffe, John M

“…Echolocation in bats and high-frequency hearing in their insect prey make bats and insects an ideal system for studying the sensory ecology and neuroethology…”
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Older men and loneliness: a cross-sectional study of sex differences in the English Longitudinal Study of Ageing by Ratcliffe, John, Galdas, Paul, Kanaan, Mona

“…Research into men and masculinities suggests men may be more reluctant than women to state they are lonely, more reliant on partners/spouses and/or alcohol to…”
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Auditory opportunity and visual constraint enabled the evolution of echolocation in bats by Thiagavel, Jeneni, Cechetto, Clément, Santana, Sharlene E., Jakobsen, Lasse, Warrant, Eric J., Ratcliffe, John M.

“…Substantial evidence now supports the hypothesis that the common ancestor of bats was nocturnal and capable of both powered flight and laryngeal echolocation…”
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Evolution of high duty cycle echolocation in bats by Fenton, M Brock, Faure, Paul A, Ratcliffe, John M

“…Duty cycle describes the relative 'on time' of a periodic signal. In bats, we argue that high duty cycle (HDC) echolocation was selected for and evolved from…”
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Younger vampire bats (Desmodus rotundus) are more likely than adults to explore novel objects by Carter, Gerald G, Forss, Sofia, Page, Rachel A, Ratcliffe, John M

“…The effects of age on neophobia and exploration are best described in birds and primates, and broader comparisons require reports from other taxa. Here we…”
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Stealth echolocation in aerial hawking bats reflects a substrate gleaning ancestry by Lewanzik, Daniel, Ratcliffe, John M, Etzler, Erik A, Goerlitz, Holger R, Jakobsen, Lasse

“…Predator-prey co-evolution can escalate into an evolutionary arms race. Examples of insect countermeasures to bat echolocation are well-known, but presumptive…”
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Body Size Predicts Echolocation Call Peak Frequency Better than Gape Height in Vespertilionid Bats by Thiagavel, Jeneni, Santana, Sharlene E., Ratcliffe, John M.

“…In most vocalizing vertebrates, lighter animals tend to produce acoustic signals of higher frequency than heavier animals. Two hypotheses propose to explain…”
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Interplay of diet and sympatry in the morphological evolution of noctilionoid bats by López‐Aguirre, Camilo, Ratcliffe, John M., Silcox, Mary T.

“…AimThe remarkable ecomorphological diversity of the bat superfamily Noctilionoidea is the result of a diet‐mediated adaptive radiation. Stemming from a…”
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The influence of bat ecology on viral diversity and reservoir status by Guy, Cylita, Ratcliffe, John M., Mideo, Nicole

“…Repeated emergence of zoonotic viruses from bat reservoirs into human populations demands predictive approaches to preemptively identify virus‐carrying bat…”
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Sonar sound groups and increased terminal buzz duration reflect task complexity in hunting bats by Hulgard, Katrine, Ratcliffe, John M.

“…More difficult tasks are generally regarded as such because they demand greater attention. Echolocators provide rare insight into this relationship because…”
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Imagineering city futures: The use of prospective through scenarios in urban planning by Ratcliffe, John, Krawczyk, Ela

“…This article, based on empirical work by the authors over the past decade, argues that city planners and policy-makers lack an effective future-oriented…”
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Multimodal warning signals for a multiple predator world by Ratcliffe, John M, Nydam, Marie L

“…Aposematism is an anti-predator defence, dependent on a predator's ability to associate unprofitable prey with a prey-borne signal. Multimodal signals should…”
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The Ĝ-Index of a Spin, Closed, Hyperbolic Manifold of Dimension 2 Or 4 by Ratcliffe, John G, Tschantz, Steven T

“…Abstract In this paper, we develop general techniques for computing the Atiyah–Singer $\hat G$-index of a spin, closed, hyperbolic 2- or 4-manifold and apply…”
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Sonar strobe groups and buzzes are produced before powered flight is achieved in the juvenile big brown bat, Eptesicus fuscus by Mayberry, Heather W, Faure, Paul A, Ratcliffe, John M

“…Laryngeally echolocating bats produce a rapid succession of echolocation calls just before landing. These landing buzzes exhibit an increase in call rate and a…”
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Niche-specific cognitive strategies: object memory interferes with spatial memory in the predatory bat Myotis nattereri by Hulgard, Katrine, Ratcliffe, John M

“…Related species with different diets are predicted to rely on different cognitive strategies: those best suited for locating available and appropriate foods…”
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A synthesis of deimatic behaviour by Drinkwater, Eleanor, Allen, William L., Endler, John A., Hanlon, Roger T., Holmes, Grace, Homziak, Nicholas T., Kang, Changku, Leavell, Brian C., Lehtonen, Jussi, Loeffler‐Henry, Karl, Ratcliffe, John M., Rowe, Candy, Ruxton, Graeme D., Sherratt, Tom N., Skelhorn, John, Skojec, Chelsea, Smart, Hannah R., White, Thomas E., Yack, Jayne E., Young, Catherine M., Umbers, Kate D. L.

“…ABSTRACT Deimatic behaviours, also referred to as startle behaviours, are used against predators and rivals. Although many are spectacular, their proximate and…”
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How the bat got its buzz by Ratcliffe, John M., Elemans, Coen P. H., Jakobsen, Lasse, Surlykke, Annemarie

“…Since the discovery of echolocation in bats, the final phase of an attack on a flying insect, the ‘terminal buzz’, has proved enigmatic. During the buzz, bats…”
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Extension of crystallographic groups by or by Ratcliffe, John G., Tschantz, Steven T.

“…In this paper, we develop the theory for classifying all pairs such that is an n-space group and N is a normal subgroup of such that is infinite cyclic or…”
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Habituation and ecological salience: insights into the foraging ecology of the fringed-lipped bat, Trachops cirrhosus by Dixon, M. May, Hulgard, Katrine, Ratcliffe, John M., Page, Rachel A.

“…Animals are often confronted with more sensory stimuli than they can attend to, and so should pay attention to stimuli that are relevant to them and habituate…”
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