Echolocation call production during aerial and terrestrial locomotion by New Zealand's enigmatic lesser short-tailed bat,<i>Mystacina tuberculata</i>

Parsons, Stuart; Riskin, Daniel K.; Hermanson, John W.

doi:10.1242/jeb.039008

Cited by 13 publications

(5 citation statements)

References 42 publications

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“…This bat is specialised to forage on the ground and along tree branches. When hunting on substrate, it continues to emit ultrasound as well as incidental sound of movement through leaf litter (Jones et al, 2003;Parsons et al, 2010). This incidental sound is audible to weta (Lomas, 2007).…”

Section: Discussionmentioning

confidence: 99%

Mechanical filtering for narrow-band hearing in the weta

Lomas

Montealegre‐Z

Parsons

et al. 2011

Journal of Experimental Biology

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SUMMARYThis paper constitutes a major attempt to associate tympanic deflections with the mechanoreceptor organ location in an acoustic insect. The New Zealand tree weta (Hemideina thoracica) has tympanal ears located on each of the prothoracic tibiae. The tympana exhibit a sclerotized oval plate, membranous processes bulging out from the tibial cuticle and many loosely suspended ripples. We used microscanning laser Doppler vibrometry to determine how such a tympanal membrane vibrates in response to sound and whether the sclerotized region plays a role in hearing. The tympanum displays a single resonance at the calling frequency of the male, an unusual example of an insect tympana acting as a narrow bandpass filter. Both tympana resonate in phase with the stimulus and with each other. Histological sections show that the tympanal area is divided into two distinct regions, as in other ensiferans. An oval plate lies in the middle of a thickened region and is surrounded by a transparent and uniformly thin region. It is hinged dorsally to the tympanal rim and thus resembles the model of a 'hinged flap'. The thickened region appears to act as a damping mass on the oscillation of the thin region, and vibration displacement is reduced in this area. The thinner area vibrates with higher amplitude, inducing mechanical pressure on the dorsal area adjacent to the crista acustica. We present a new model showing how the thickened region might confer a mechanical gain onto the activation of the crista acustica sensory neurons during the sound-induced oscillations. Supplementary material available online at

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Section: Discussionmentioning

confidence: 99%

Mechanical filtering for narrow-band hearing in the weta

Lomas

Montealegre‐Z

Parsons

et al. 2011

Journal of Experimental Biology

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“…Poecile atricapillus notes (Sturdy, Phillmore & Weisman, 2000;Charrier et al, 2005) King penguin Aptenodytes patagonicus → individual identities (Jouventin, Aubin & Lengagne, 1999;Lengagne et al, 2000) Red-legged partridge Alectoris rufa and rock partridge A. graeca (Ceugniet & Aubin, 2001) Canary Serinus canaria breaths (Hartley & Suthers, 1989) King penguin Aptenodytes patagonicus (Lengagne, Lauga & Aubin, 2001) Emperor penguin Aptenodytes forsteri → individual identities (Aubin, Jouventin & Hildebrand, 2000) Terrestrial mammals Meerkat Suricata suricatta calls (Manser, 2001) Lesser short-tailed bat Mystacina tuberculata pulses (Parsons, Riskin & Hermanson, 2010) Meerkat Suricata suricatta calls (Manser, 2001) Meerkat Suricata suricatta calls → predator type (Manser, 2001) Gibbon Hylobates lar phrase (Raemaekers et al, 1984) Rock hyrax Procavia capensis songs → male quality (Koren & Geffen, 2009) Rock hyrax Procavia capensis songs (Kershenbaum et al, 2012) Free-tailed bat Tadarida brasiliensis syllable → courtship (Bohn et al, 2008;Parsons et al, 2010) Free-tailed bat…”

Section: ) Black-capped Chickadeementioning

confidence: 99%

Acoustic sequences in non‐human animals: a tutorial review and prospectus

et al. 2014

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Animal acoustic communication often takes the form of complex sequences, made up of multiple distinct acoustic units. Apart from the well-known example of birdsong, other animals such as insects, amphibians, and mammals (including bats, rodents, primates, and cetaceans) also generate complex acoustic sequences. Occasionally, such as with birdsong, the adaptive role of these sequences seems clear (e.g. mate attraction and territorial defence). More often however, researchers have only begun to characterise – let alone understand – the significance and meaning of acoustic sequences. Hypotheses abound, but there is little agreement as to how sequences should be defined and analysed. Our review aims to outline suitable methods for testing these hypotheses, and to describe the major limitations to our current and near-future knowledge on questions of acoustic sequences. This review and prospectus is the result of a collaborative effort between 43 scientists from the fields of animal behaviour, ecology and evolution, signal processing, machine learning, quantitative linguistics, and information theory, who gathered for a 2013 workshop entitled, “Analysing vocal sequences in animals”. Our goal is to present not just a review of the state of the art, but to propose a methodological framework that summarises what we suggest are the best practices for research in this field, across taxa and across disciplines. We also provide a tutorial-style introduction to some of the most promising algorithmic approaches for analysing sequences. We divide our review into three sections: identifying the distinct units of an acoustic sequence, describing the different ways that information can be contained within a sequence, and analysing the structure of that sequence. Each of these sections is further subdivided to address the key questions and approaches in that area. We propose a uniform, systematic, and comprehensive approach to studying sequences, with the goal of clarifying research terms used in different fields, and facilitating collaboration and comparative studies. Allowing greater interdisciplinary collaboration will facilitate the investigation of many important questions in the evolution of communication and sociality.

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“…In addition, flight and echolocation interact in ways that are relevant for the evolution of size in bats, and vice versa. For instance, synchronization of echolocation call emission and wingbeat (specifically, the downstroke) enables bats to echolocate at search-phase frequency with no additional cost while flying (e.g., Speakman and Racey 1991;Jones 1999;Parsons et al 2010). This coupling likely represents an important selective pressure on size to keep both flight and echolocation costs as low as possible (Speakman and Racey 1991).…”

Section: Introductionmentioning

confidence: 99%

Evolution of Body Mass in Bats: Insights from a Large Supermatrix Phylogeny

et al. 2018

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Bats are atypical small mammals. Size is crucial for bats because it affects most aerodynamic variables and several key echolocation parameters. In turn, scaling relationships of both flight and echolocation have been suggested to constrain bat body size evolution. Previous studies have found a large phylogenetic effect and the inclusion of early Eocene fossil bats contributed to recover idiosyncratic body size change patterns in bats. Here, we test these previous hypotheses of bat body size evolution using a large, comprehensive supermatrix phylogeny (+800 taxa) to optimize body size and examine changes reconstructed along branches. Our analysis provides evidence of rapid stem phyletic nanism, an ancestral value stabilized at 12 g for crown-clade Chiroptera followed by backbone stasis, low-magnitude changes inside established families, and massive body size increase at accelerated rate in pteropodid subclades. Total variation amount explained by pteropodid subclades was 86.3%, with most changes reconstructed as phyletic increases but also apomorphic decreases. We evaluate these macroevolutionary patterns in light of the constraints hypothesis, and in terms of both neutral and adaptive evolutionary models. The reconstructed macroevolution of bat body size led us to propose that echolocation and flight work as successive, nested constraints limiting bat evolution along the body size scale.

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Echolocation call production during aerial and terrestrial locomotion by New Zealand's enigmatic lesser short-tailed bat,Mystacina tuberculata

Cited by 13 publications

References 42 publications

Mechanical filtering for narrow-band hearing in the weta

Mechanical filtering for narrow-band hearing in the weta

Acoustic sequences in non‐human animals: a tutorial review and prospectus

Evolution of Body Mass in Bats: Insights from a Large Supermatrix Phylogeny

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