Mating Call Recognition in the Green Treefrog (Hyla Cinerea): The Significance of some Fine-temporal Properties

1978 ◽  
Vol 74 (1) ◽  
pp. 59-73 ◽  
Author(s):  
H. CARL GERHARDT
Keyword(s):  
Spectral Properties ◽  
Species Recognition ◽  
Biological Significance ◽  
Hyla Cinerea ◽  
Temporal Properties ◽  
Call Recognition ◽  
Mating Call ◽  
Mating Calls ◽  
Green Treefrog ◽  
Green Treefrogs

1. Two hundred and eighty-eight female green treefrogs responded in two-choice experiments using synthetic calls. The spectral properties of the sounds were similar; the fine-temporal properties were systematically varied. 2. Females preferred sounds in which the waveform periodicity was about 300/s, a rate typical of natural mating calls. They discriminated strongly against calls with periodicities of 100/s, 60/s and 50/s. Aperiodic calls and calls with periodicities of 225/s and 900/s were intermediate in attractiveness. 3. The results of four experiments indicated that periodicity preferences depended on corresponding changes in the amplitude-time envelopes of the signals. 4. Neurophysiological correlations and the implications of the behavioural results are discussed. 5. The biological significance in species recognition and in the differentiation of the mating call from other signals in the repertoire of the green treefrog is discussed.

The Significance of Some Spectral Features in Mating Call Recognition in the Green Treefrog (Hyla Cinerea)

1974 ◽  
Vol 61 (1) ◽  
pp. 229-241 ◽  
Author(s):  
H. CARL GERHARDT
Keyword(s):  
Spectral Features ◽  
Optimal Frequency ◽  
Hyla Cinerea ◽  
Frequency Bands ◽  
Bimodal Stimulus ◽  
Call Recognition ◽  
Mating Call ◽  
Spectral Peaks ◽  
Green Treefrog ◽  
Green Treefrogs

1. Synthetic calls with a waveform periodicity of 300/sec and a bimodal spectrum attracted female green treefrogs as effectively as natural calls. 2. Effectiveness was markedly reduced if the relative amplitude of the two spectral peaks differed by as little as 10 dB. 3. Optimal frequency bands were 900-1100 Hz in the low range and 2700-3300 Hz in the high. 4. Addition of components at 1800 and 2100 Hz rendered the call less attractive. 5. In the absence of a bimodal stimulus, most females responded to a call containing a single spectral peak in the high or low range. 6. Mating call recognition in the green treefrog is compared with that in the bullfrog.

scholarly journals Dip listening or modulation masking? Call recognition by green treefrogs (Hyla cinerea) in temporally fluctuating noise

2012 ◽  
Vol 198 (12) ◽  
pp. 891-904 ◽  
Author(s):  
Alejandro Vélez ◽  
Gerlinde Höbel ◽  
Noah M. Gordon ◽  
Mark A. Bee
Keyword(s):  
Hyla Cinerea ◽  
Call Recognition ◽  
Green Treefrogs

scholarly journals Lung-to-ear sound transmission does not improve directional hearing in green treefrogs (Hyla cinerea)

2020 ◽  
Author(s):  
Jakob Christensen-Dalsgaard ◽  
Norman Lee ◽  
Mark A. Bee
Keyword(s):  
Vibration Amplitude ◽  
Sexual Communication ◽  
Sound Transmission ◽  
The State ◽  
Directional Hearing ◽  
Hyla Cinerea ◽  
Lung Inflation ◽  
Amplitude Difference ◽  
Green Treefrog ◽  
Green Treefrogs

ABSTRACTAmphibians are unique among extant vertebrates in having middle ear cavities that are internally coupled to each other and to the lungs. In frogs, the lung-to-ear sound transmission pathway can influence the tympanum’s inherent directionality, but what role such effects might play in directional hearing remain unclear. In this study of the American green treefrog (Hyla cinerea), we tested the hypothesis that the lung-to-ear sound transmission pathway functions to improve directional hearing, particularly in the context of interspecific sexual communication. Using laser vibrometry, we measured the tympanum’s vibration amplitude in females in response to a frequency modulated sweep presented from 12 sound incidence angles in azimuth. Tympanum directionality was determined across three states of lung inflation (inflated, deflated, reinflated) both for a single tympanum in the form of the vibration amplitude difference (VAD) and for binaural comparisons in the form of the interaural vibration amplitude difference (IVAD). The state of lung inflation had negligible effects (typically less than 0.5 dB) on both VADs and IVADs at frequencies emphasized in the advertisement calls produced by conspecific males (834 Hz and 2730 Hz). Directionality at the peak resonance frequency of the lungs (1558 Hz) was improved by ≅ 3 dB for a single tympanum when the lungs were inflated versus deflated, but IVADs were not impacted by the state of lung inflation. Based on these results, we reject the hypothesis that the lung-to-ear sound transmission pathway functions to improve directional hearing in frogs.SUMMARY STATEMENTContrary to prevailing views on the mechanisms of hearing in frogs, the lung-to-ear pathway for sound transmission does not improve directional hearing in these vociferous vertebrates.

Geographic Variation in the Mating Call of the Green Treefrog Hyla cinerea

1988 ◽  
Vol 119 (1) ◽  
pp. 101 ◽  
Author(s):  
Adam Asquith ◽  
Ronald Altig ◽  
Paul Zimba
Keyword(s):  
Geographic Variation ◽  
Hyla Cinerea ◽  
Mating Call ◽  
Green Treefrog

Preoptic Activation of Mating Call Orientation in Female Anurans

Behaviour ◽  
1969 ◽  
Vol 35 (1-2) ◽  
pp. 114-127 ◽  
Author(s):  
Robert S. Schmidt
Keyword(s):  
Escape Response ◽  
Preoptic Area ◽  
Preoptic Nucleus ◽  
Orientation Behavior ◽  
Hyla Cinerea ◽  
Mating Call ◽  
Mating Calls ◽  
Bufo Woodhousei ◽  
Gravid Females ◽  
Isolating Mechanism

AbstractTechniques are described for inducing ovulation in tree frogs (Hyla cinerea) and toads (Bufo woodhousei fowleri) and for testing the ability of these gravid females to orient to homospecific mating calls. A few preliminary tests were also made with heterospecific mating calls. Several responses to calls are described. Of special interest is an escape response made by Bufo to heterospecific calls. This may serve as an isolating mechanism by effecting avoidance of heterospecific calling males. Males of the same species could not be induced to move toward mating calls. Testing of females with forebrain lesions showed that the telencephalon and the dorsal part of the preoptic area are not necessary for orientation behavior, but that the region of the ventral magnocellular preoptic nucleus is essential.

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