Effect of Temperature on Call of the Frog, Bombina variegata

Zweifel, Richard George

doi:10.2307/1439890

Cited by 38 publications

(19 citation statements)

References 5 publications

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“…Well-studied exceptions are fire-bellied toads of the genus Bombina (Bombinatoridae), which produce calls during inspiration ( Fig. 1) (Zweifel 1959;Lörcher 1969), and Discoglossus (Alytidae), which produce intermittently inspiratory and expiratory notes (Weber & Schneider 1971;Weber 1974;Glaw & Vences 1991).…”

Section: Bioacoustics In Anuran Taxonomymentioning

confidence: 99%

The use of bioacoustics in anuran taxonomy: theory, terminology, methods and recommendations for best practice

Köhler

Jansen

Rodríguez³

et al. 2017

Zootaxa

457

410

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Vocalizations of anuran amphibians have received much attention in studies of behavioral ecology and physiology, but also provide informative characters for identifying and delimiting species. We here review the terminology and variation of frog calls from a perspective of integrative taxonomy, and provide hands-on protocols for recording, analyzing, comparing, interpreting and describing these sounds. Our focus is on advertisement calls, which serve as premating isolation mechanisms and, therefore, convey important taxonomic information. We provide recommendations for terminology of frog vocalizations, with call, note and pulse being the fundamental subunits to be used in descriptions and comparisons. However, due to the complexity and diversity of these signals, an unequivocal application of the terms call and note can be challenging. We therefore provide two coherent concepts that either follow a note-centered approach (defining uninterrupted units of sound as notes, and their entirety as call) or a call-centered approach (defining uninterrupted units as call whenever they are separated by long silent intervals) in terminology. Based on surveys of literature, we show that numerous call traits can be highly variable within and between individuals of one species. Despite idiosyncrasies of species and higher taxa, the duration of calls or notes, pulse rate within notes, and number of pulses per note appear to be more static within individuals and somewhat less affected by temperature. Therefore, these variables might often be preferable as taxonomic characters over call rate or note rate, which are heavily influenced by various factors. Dominant frequency is also comparatively static and only weakly affected by temperature, but depends strongly on body size. As with other taxonomic characters, strong call divergence is typically indicative of species-level differences, whereas call similarities of two populations are no evidence for them being conspecific. Taxonomic conclusions can especially be drawn when the general advertisement call structure of two candidate species is radically different and qualitative call differences are thus observed. On the other hand, quantitative differences in call traits might substantially vary within and among conspecific populations, and require careful evaluation and analysis. We provide guidelines for the taxonomic interpretation of advertisement call differences in sympatric and allopatric situations, and emphasize the need for an integrative use of multiple datasets (bio-acoustics, morphology, genetics), particularly for allopatric scenarios. We show that small-sized frogs often emit calls with frequency components in the ultrasound spectrum, although it is unlikely that these high frequencies are of biological relevance for the majority of them, and we illustrate that detection of upper harmonics depends also on recording distance because higher frequencies are attenuated more strongly. Bioacoustics remains a prime approach in integrative taxonomy of anurans if uncertainty due to possible intraspecific variation and technical artifacts is adequately considered and acknowledged.

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Section: Bioacoustics In Anuran Taxonomymentioning

confidence: 99%

The use of bioacoustics in anuran taxonomy: theory, terminology, methods and recommendations for best practice

Köhler

Jansen

Rodríguez³

et al. 2017

Zootaxa

457

410

View full text Add to dashboard Cite

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“…For amphibians and reptiles- Littlejohn (1959), Littlejohn and Martin (1965), Zweifel (1959Zweifel ( , 1964aZweifel ( , 1964bZweifel ( , 1965, Frishkopf andGoldstein (1963), Marler (1963), Blair (1956Blair ( , 1957Blair ( , 1958Blair ( , 1963, Pettus (1954), andBogert (1960).…”

Section: Figmentioning

confidence: 99%

The harmonic interval : fact or artifact in spectral analysis of pulse trains

Watkins¹

1968

109

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“…However, given that frogs are ectotherms, it is expected that acoustic properties of their calls will vary with temperature (Duellman and Trueb 1994). Moreover, several authors already have demonstrated the correlation of the temporal parameters of the call with the temperature (e.g., Blair 1958, Zweifel 1959, Gerhardt, 1978, Gayou 1984, Schneider and Sinsch 1992, Schneider et al 1993, Márquez and Bosch 1995, Navas 1996b, Schneider and Sinsch 1999, Esteban et al 2002, Martino and Sinsch 2002, Heyer and Reid 2003, mainly in species with energetic calling (Navas 1996a). Hence, the bioacoustic analyses of anuran calls requires considering temperature, so that this factor does not mask intrinsic differences or generate variations in otherwise similar calls.…”

Section: Introductionmentioning

confidence: 99%

Efeito da temperatura sobre o canto de advertência de Pleurodema tucumanum (Anura: Leiuperidae)

Valetti¹,

Martino²

2012

Phyllomedusa

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Temperature effect on the advertisement call of Pleurodema tucumanum (Anura: Leiuperidae). The advertisement call represents an important character to discriminate species, mainly between sibling species. The genus Pleurodema has cryptic species, therefore its acoustical characteristics could represent an useful tool to solve taxonomic problems. It is expected that the advertisement call acoustic properties of the amphibian anurans will vary with the temperature because the frogs are ectotherms. We evaluated the effect of temperature in the acoustic variables of the advertisement call of Pleurodema tucumanum. The inter-call interval, number of pulses per call, inter-pulse interval and pulse rate showed covariation with temperature, whereas the call duration, pulse duration and dominant frequency were temperature-independent. The advertisement call of P. tucumanum corresponds to a single periodic pulse train. The call showed an average duration of 289 ms, dominant frequency of 2552 Hz and 35 pulses of 2.38 ms at 22˚C. The number of pulses increased with temperature. The discrimination of exogenous variability from the acoustic components allows one to analyze the intrinsic variability of the advertisement calls.Keywords: bioacoustic analysis, linear regression model, single periodic pulse train. ResumenEfecto de la temperatura en el canto de advertencia de Pleurodema tucumanum (Anura: Leiuperidae). El canto de advertencia es un carácter importante que permite discriminar especies, principalmente entre especies simpátricas. El género Pleurodema poseen especies crípticas y por lo tanto, sus características acústicas podrían representar una herramienta útil para resolver problemas taxonómicos. Es esperado que las propiedades acústicas del canto de advertencia de los anfibios anuros varíen con la temperatura debido a su condición ectotérmica. Nosotros evaluamos el efecto de la temperatura en las variables acústicas del canto de advertencia de Pleurodema tucumanum. Las variables intervalo entre cantos, número de pulsos por canto, intervalo entre pulsos y tasa de pulsos mostraron covariación con la temperatura, mientras que las variables duración del canto, duración del pulso y frecuencia dominante resultaron temperatura-independientes. El canto de advertencia de P. 126

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Effect of Temperature on Call of the Frog, Bombina variegata

Cited by 38 publications

References 5 publications

The use of bioacoustics in anuran taxonomy: theory, terminology, methods and recommendations for best practice

The use of bioacoustics in anuran taxonomy: theory, terminology, methods and recommendations for best practice

The harmonic interval : fact or artifact in spectral analysis of pulse trains

Efeito da temperatura sobre o canto de advertência de Pleurodema tucumanum (Anura: Leiuperidae)

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