Release calls of Moroccan spadefoot toad, Pelobates varaldii (Anura, Pelobatidae)

in Amphibia-Reptilia
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Abstract

Release calls of Pelobates varaldii Pasteur and Bons (1959) are described quantitatively based on airborne recordings obtained from 4 males and 12 females from a population of the extreme north of its range. The calls are sequences of pulsed notes with a variable number of pulses per note. To the best of our knowledge this is the first report on the acoustic repertoire of this endemic endangered species from Morocco.

Release calls of Moroccan spadefoot toad, Pelobates varaldii (Anura, Pelobatidae)

in Amphibia-Reptilia

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References

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Figures

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    (A), (B) and (C) Release calls of an adult female individual (weight 30 g, SVL 6.6 cm). (A) Eight second sequence of release calls including a section of high intensity calling in the middle. Above: oscillogram, Below: Audiospectrogram (FFT 1040). (B) Oscillogram and Audiospectrogram (FFT 1040) of a sequence of two release calls (not high intensity) of the same individual. (C) Oscillogram and Audiospectrogram (FFT 1040) of a sequence of two release release calls (high intensity) of the same individual. D, E and F, Release calls of an adult male individual (weight 21.4 g, SVL 5.8 cm). (D) Eight second sequence of release calls, (E) Oscillogram and Audiospectrogram (FFT 1040) of a sequence of two release calls (not high intensity) of the individual. (F) Oscillogram and Audiospectrogram (FFT 1040) of a sequence of two release calls (high intensity) of the same individual.

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    Body and acoustic parameters of the recorded individuals. Acoustic parameters: mean, Standard Deviation (in parenthesis), range, CVb Coefficient of Variation between individuals in % (measured as the variation of the mean values of each individual). * indicate significantly different values for males and females (P<0.05. Mann-Whitney U test).

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