Maximal selection in tandem networks with symmetric hearing range

Algorithmica ◽  
1989 ◽  
Vol 4 (1-4) ◽  
pp. 343-364
Author(s):  
Jeffrey M. Jaffe ◽  
Zvi Rosberg
Keyword(s):  
Hearing Range ◽  
Tandem Networks

The Acoustic Behaviour of the Bush Cricket Pholidoptera Griseoaptera

1966 ◽  
Vol 45 (1) ◽  
pp. 15-30
Author(s):  
M. D. R. JONES
Keyword(s):  
Chirp Rate ◽  
Mutual Inhibition ◽  
Acoustic Behaviour ◽  
Close Proximity ◽  
Hearing Range ◽  
High Level ◽  
Bush Cricket

1. Pholidoptera griseoptera males singing alone or alternating with other males produce short chirps of three or occasionally four syllables (wing movements) lasting about 100 msec. (at 18° C.). 2. Close proximity of singing males may result in rivalry behaviour where chirps lasting up to about 4 sec. may be produced. The long chirp is not usually continuous but has a number of breaks or ‘stutters’. 3. The syllables and syllable rates in the long chirp and short chirp are essentially similar. 4. At the end of a short chirp or of a group of syllables in the long chirp, the syllable rate is decreased, possibly indicating a waning of excitation of the syllable-producing mechanism. 5. Males within hearing range of each other alternate or occasionally synchronize their short chirps. The pattern of this interaction appears to be determined mainly by mutual inhibition between the singing males. Mutual excitation may cause an in crease in chirp rate during the interaction. 6. Chirping may be controlled by a pacemaker system which can be inhibited or excited by its various inputs. A long chirp is possibly the result of a high level of excitation of this mechanism. 7. Alternation singing and rivalry behaviour between males may have a territorial significance.

Song degradation in the hole-nesting pied flycatcher Ficedula hypoleuca: Implications for polyterritorial behaviour in contrasting habitat-types

Behaviour ◽  
2007 ◽  
Vol 144 (10) ◽  
pp. 1161-1178 ◽  
Author(s):  
Torben Dabelsteen ◽  
Simon Pedersen ◽  
Helene Lampe ◽  
Ole Larsen
Keyword(s):  
Deciduous Forest ◽  
Coniferous Forest ◽  
Ficedula Hypoleuca ◽  
Pied Flycatcher ◽  
Habitat Types ◽  
Nest Cavity ◽  
Male And Female ◽  
Mixed Deciduous Forest ◽  
Hearing Range ◽  
Female Behaviour

AbstractIn the hole-nesting pied flycatcher, Ficedula hypoleuca, a male may become polyterritorial after attracting a primary female. However, the female may recognize her mate's song and attack other females that associate with him. Differences in sound degradation amongst different habitats and within nestboxes may, therefore, be important for male and female behaviour since the male may have to move outside female hearing range to avoid harassment, and the female may have to listen for the mate to be able to locate competing females. This may be difficult from inside the nest cavity. We used ten common song elements to test sound degradation with distance in a mixed coniferous and a mixed deciduous forest, measuring broadcast sounds both inside and outside nestboxes. On average, sound degradation increased to a larger extent with distance in the deciduous than the coniferous forest. This is consistent with the shorter polyterritorial distances of flycatchers in the deciduous forest. Furthermore, song degradation was stronger inside the nestboxes. Being inside may, therefore, reduce a female's possibility of detecting and recognizing songs. This may be one reason why female pied flycatchers spend little time within the nest cavity before incubation unlike some other hole nesting species.

The Defensive Vocal "Distress" Repertoire of Gekkonid Lizards: Intra- and Inter-Specific Variation

1984 ◽  
Vol 5 (2) ◽  
pp. 109-124 ◽  
Author(s):  
Eliezer Frankenberg ◽  
Yehudah L. Werner
Keyword(s):  
Vocal Response ◽  
Frequency Range ◽  
Acoustic Frequency ◽  
Acoustic Environment ◽  
Specific Variation ◽  
Hearing Range ◽  
Gehyra Variegata

Vocalizations emitted in a uniform distress situation were recorded from adult, similarly sized, gekkonine lizards Bunopus blanfordii, Cyrtodactylus kotschyi orientalis, Gehyra variegata and Stenodactylus s. sthenodactylus. The 269 calls obtained from the 24 individuals used, analysed sonagraphically, segregated into four distinct call types recurring in each species. Ten independently varying factors combine to make this repertoire extremely variable. This variation is independent of the acoustic environment. Because the vocal response to an attacking predator is so unpredictable, and because the acoustic frequency range transcends the hearing range of the geckos themselves, the calls are believed to have a deimatic, anti-predator, function.

Hearing thresholds of small native Australian mammals – red-tailed phascogale (Phascogale calura), kultarr (Antechinomys laniger) and spinifex hopping-mouse (Notomys alexis)

2020 ◽  
Vol 190 (1) ◽  
pp. 342-351 ◽  
Author(s):  
Julie M Old ◽  
Carl Parsons ◽  
Melissa L Tulk
Keyword(s):  
Sound Pressure ◽  
Dynamic Range ◽  
Auditory Brainstem ◽  
Natural Environments ◽  
Predator Detection ◽  
Future Studies ◽  
Hearing Thresholds ◽  
Brainstem Response ◽  
Hearing Range ◽  
High Range

Abstract Hearing is essential for communication, to locate prey and to avoid predators. We addressed the paucity of information regarding hearing in Australian native mammals by specifically assessing the hearing range and sensitivity of the red-tailed phascogale (Phascogale calura), the kultarr (Antechinomys laniger) and the spinifex hopping-mouse (Notomys alexis). Auditory brainstem response (ABR) audiograms were used to estimate hearing thresholds within the range of 1–84 kHz, over a dynamic range of 0–80 dB sound pressure level (SPL). Phascogales had a hearing range of 1–40 kHz, kultarrs 1–35 kHz and hopping-mice 1–35 kHz, with a dynamic range of 17–59 dB SPL, 20–80 dB SPL and 30–73 dB SPL, respectively. Hearing for all species was most sensitive at 8 kHz. Age showed no influence on optimal hearing, but younger animals had more diverse optimal hearing frequencies. There was a relationship between males and their optimal hearing frequency, and greater interaural distances of individual males may be related to optimal hearing frequency. Because nocturnal animals use high-range hearing for prey or predator detection, our study suggests this may also be the case for the species examined in this study. Future studies should investigate their vocalizations and behaviour in their natural environments, and by exposing them to different auditory stimuli.

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