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Monomorphic call structure and dimorphic vocal phenology in a sex-role reversed frog
| dc.contributor.author | Serrano, José M. | |
| dc.contributor.author | Penna, Mario | |
| dc.contributor.author | Valenzuela-Sánchez, Andrés | |
| dc.contributor.author | Méndez, Marco Antonio | |
| dc.contributor.author | Azat, Claudio | |
| dc.date.accessioned | 2020-12-18T20:18:14Z | |
| dc.date.available | 2020-12-18T20:18:14Z | |
| dc.date.issued | 2020 | |
| dc.identifier.uri | http://repositorio.ucm.cl/handle/ucm/3364 | |
| dc.description.abstract | Sexual signals in different animals are expected to be dimorphic when both sexes signal, but cases of monomorphism are known to occur, and we lack a clear understanding about the factors that modulate the level of sexual dimorphism in signals. In this study, we evaluated the hypothesis that the lack of dimorphism in sexual signals might evolve in systems experiencing temporal changing conditions of intra-sexual competition. We used the Darwin’s frog (Rhinoderma darwinii), a species with paternal care, as a model. We compared advertisement calls and examined call distinctiveness among females, pregnant and non-pregnant males in a wild population from Chiloé island, Chile. We also recorded the vocal activity of both sexes along the reproductive season. Additionally, we compared the acoustic properties of their advertisement calls in terms of sexual distinctiveness and individual repeatability. We found that the proportion of females and pregnant males vocalizing changed over time following distinct patterns. Females produced calls with lower dominant frequency and longer note and call durations than males, and these acoustic differences were related to body size differences between sexes, but only dominant frequency contributed significantly to the distinctiveness of calls between sexes. Also, individual repeatability was high, indicating that calling can be relevant for social recognition. Overall, our results suggest that mutual selective pressures could be involved in the limited dimorphism of the advertisement calls in Darwin’s frogs, as the sex ratio of individuals vocalizing (i.e. females vs. reproductive males) is reversed along the breeding period. | es_CL |
| dc.language.iso | en | es_CL |
| dc.rights | Atribución-NoComercial-SinDerivadas 3.0 Chile | * |
| dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/3.0/cl/ | * |
| dc.source | Behavioral Ecology and Sociobiology, 74(10), 127 | es_CL |
| dc.subject | Sexual monomorphism | es_CL |
| dc.subject | Sexual role reversal | es_CL |
| dc.subject | Vocal phenology | es_CL |
| dc.subject | Male pregnancy | es_CL |
| dc.subject | Anuran communication | es_CL |
| dc.subject | Rhinoderma darwinii | es_CL |
| dc.title | Monomorphic call structure and dimorphic vocal phenology in a sex-role reversed frog | es_CL |
| dc.type | Article | es_CL |
| dc.ucm.indexacion | Scopus | es_CL |
| dc.ucm.indexacion | Isi | es_CL |
| dc.ucm.uri | sibib2.ucm.cl:2048/login?url=https://link.springer.com/article/10.1007/s00265-020-02903-3 | es_CL |
| dc.ucm.doi | doi.org/10.1007/s00265-020-02903-3 | es_CL |
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