Description of vocalizations and Analysis of variation intra and inter-individual of Pristimantis ramagii (Boulenger, 1888) in an upland swamp, Northeast Brazil.

Leonardo Pessoa Cabus Oitaven, José Ricardo Oliveira Santos, Adilson Oliveira Silva, Priscilla Guedes Gamballe, Geraldo Jorge Barbosa Moura

Abstract


Vocalization is used by frogs to attract females and establish spaces. Evaluation of variation of the call is necessary for social and ecological role of the species. In addition, patterns can change according to mass and snout-vent length. In this study we analysed the pattern call of Pristimantis ramagii, aiming to verify types of call variation of inter- and intra-individual patterns, and its relationship with the mass and SVL. The study was developed in a refuge in Belo Jardim, 240 calls were registered (Advertisement and Territorial calls). Advertisement call presented 2:55 ± 0.69 notes / call, lasting 0.151 ± 0.052 seconds, while the territorial call had 0.516 ± 0.111 seconds. The duration of notes, and the number of pulses is presented as dynamic properties, while duration and dominant frequency, were static properties. The dominant frequency presented significant relation to mass and SVL, while the duration of the call only to the SVL. In the present study we observed that the advertisement call has variety among individuals than internally. Furthermore, the vocalization may suffer influence of environmental factors in relation to its morphology. Being a complex call, this may vary in amount and intensity of its notes in a short time.

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