... birds . In Methods in Comparative Psychoacoustics (ed. G. M. Klump , R. J. Dooling , R. R. Ray and W. C. Stebbins ), pp 161 - 169 . Switzerland : Birkhäuser Verlag . Finneran , J. J. and Schlundt , C. E. ( 2007 ). Underwater sound pressure variation...

...Grace Capshaw; Jakob Christensen-Dalsgaard; Catherine E. Carr ABSTRACT The ability to sense and localize sound is so advantageous for survival that it is difficult to understand the almost 100 million year gap separating the appearance of early tetrapods and the emergence of an impedance-matching...

...G. Capshaw; D. Soares; J. Christensen-Dalsgaard; C. E. Carr ABSTRACT The tympanic middle ear is an adaptive sensory novelty that evolved multiple times in all the major terrestrial tetrapod groups to overcome the impedance mismatch generated when aerial sound encounters the air–skin boundary. Many...

...Chantel J. Taylor; Jayne E. Yack ABSTRACT Many species of caterpillars have been reported to respond to sound, but there has been limited formal study of what sounds they hear, how they hear them and how they respond to them. Here, we report on hearing in caterpillars of the monarch butterfly...

...Amanda A. Lindeman; Jayne E. Yack ABSTRACT Many insects vary their song patterns to communicate different messages, but the underlying biomechanisms are often poorly understood. Here, we report on the mechanics of sound production and variation in an elytro-tergal stridulator, male Dendroctonus...

...Friedrich Ladich; Hans Winkler ABSTRACT Sound propagates much faster and over larger distances in water than in air, mainly because of differences in the density of these media. This raises the question of whether terrestrial (land mammals, birds) and (semi-)aquatic animals (frogs, fishes...

...Robert L. Niese; Bret W. Tobalske ABSTRACT For centuries, naturalists have suggested that the tonal elements of pigeon wing sounds may be sonations (non-vocal acoustic signals) of alarm. However, spurious tonal sounds may be produced passively as a result of aeroelastic flutter in the flight...

...Christopher J. Clark; Richard O. Prum ABSTRACT Tonal, non-vocal sounds are widespread in both ordinary bird flight and communication displays. We hypothesized these sounds are attributable to an aerodynamic mechanism intrinsic to flight feathers: aeroelastic flutter. Individual wing and tail...

... that the youngest adults (2 weeks post-maturity) have a greater overall neurophysiological response to sound, especially for low frequencies (<10 kHz), as well as a shorter latency to this neural response. Interestingly, when measuring displacement of the tympanal membrane that the receptor neurons directly...

...Timothy C. Tricas; Kelly S. Boyle ABSTRACT Fish produce context-specific sounds during social communication, but it is not known how acoustic behaviors have evolved in relation to specializations of the auditory system. Butterflyfishes (family Chaetodontidae) have a well-defined phylogeny...

...Loïc Kéver; Orphal Colleye; Marco Lugli; David Lecchini; Franck Lerouvreur; Anthony Herrel; Eric Parmentier Onuxodon species are well known for living inside pearl oysters. As in other carapids, their anatomy highlights their ability to make sounds but sound production has never been documented...

...Loïc Kéver; Kelly S. Boyle; Branko Dragičević; Jakov Dulčić; Eric Parmentier In teleosts, superfast muscles are generally associated with the swimbladder wall, whose vibrations result in sound production. In Ophidion rochei , three pairs of muscles were named ‘sonic’ because their contractions...

... of these studies indicates that marine turtles have hearing abilities that detect low-frequency sound with a narrow band of greatest sensitivity. A recent study of Trachemys scripta elegans utilized underwater auditory brainstem response measurements and laser vibrometry to reveal peak sensitivity of 400–600 Hz...

.... Rhythmic 20 ms pip trains composed of cosine-enveloped 0.25 ms tone pips at a pip rate of 1 kHz were presented as sound stimuli. The dolphin was trained to remain still at the water surface and to wear soft latex suction-cup EEG electrodes used to measure the animal's envelope-following evoked potentials...

...-costly digging of packed sand for burrowing and foraging. At the same time, the piercing quality of screech calls due to the deep sinusoidal frequency modulation, matching the periodicity of body vibration, may be important for agonistic communication in this species. vibration vocalization sound...

...S. N. Patek; J. E. Baio SUMMARY The dynamic interplay between static and sliding friction is fundamental to many animal movements. One interesting example of stick–slip friction is found in the sound-producing apparatus of many spiny lobster species(Palinuridae). The acoustic movements of the spiny...

... frequency of 183.1 Hz (range 87–261 Hz), range in duration from 68 to 1720 ms (mean 277.1 ms) and lead to waterborne sounds of similar frequencies. Lobsters most often produce these signals using only one pair of muscles at a time and alternate between the muscles of the left and right antennae when making...

... bandwidth Q -3dB of over 50. Other pulses showed considerable amplitude and frequency modulation within the pulse. When driven by external sound, burrows resonated at a mean frequency of 3.5 kHz with a mean quality factor Q of 7.4. Natural-size model burrows resonated at similar frequencies with similar Q...