SciELO - Scientific Electronic Library Online

vol.67 issue2The skipper butterflies (Lepidoptera: Hesperiidae) of the Reserva Ecológica Leonelo Oviedo, San José, Costa RicaShifts in the diversity of an amphibian community from a premontane forest of San Ramón, Costa Rica author indexsubject indexarticles search
Home Pagealphabetic serial listing  

Services on Demand




Related links


Revista de Biología Tropical

On-line version ISSN 0034-7744Print version ISSN 0034-7744


GUTIERREZ-VANNUCCHI, Ana Cecilia; RODRIGUEZ-UMANA, Paulina; SANDOVAL, Luis  and  GARCIA-RODRIGUEZ, Adrián. Diel acoustic variation in Hyalinobatrachium fleischmanni (Anura: Centrolenidae) in urban habitat with different anthropogenic noise levels. Rev. biol. trop [online]. 2019, vol.67, n.2, pp.249-258. ISSN 0034-7744.


Acoustic signals produced by animals can be masked by natural or anthropogenic environmental noise. A high proportion of the current distribution of the glass-frog Hyalinobatrachium fleischmanni (Centrolenidae) overlaps with noisy urban habitats, and this may affect the species acoustic communication. In this work, we analyzed the relationship between changes in anthropogenic noise level throughout the night and the diel acoustic variation (vocalization per time) in H. fleischmanni, within three sites with different noise level. We conducted this study in three sites inside the Rodrigo Facio University Campus, San José, Costa Rica in June 2015. We used an automated recorder per site to record glass-frog vocalizations, from 17:00 to 6:00 h, during two consecutive days, every two weeks, for a month. Simultaneously, we measured the noise levels in dB each hour using a soundmeter. We used linear mixed models to compare the vocalization mean per hour against the noise levels per hour and site. Our results showed that noise levels and H. fleischmanni acoustic activity varied throughout the night. The H. fleischmanni acoustic activity at the noisier site was different from sites with lower noise levels. The highest acoustic activity was found in the less noisy site throughout the sampled period. Although we fail to found a direct relationship between noise level and H. fleischmanni acoustic activity, noise level variation affects vocal activity pattern in this species.

Keywords : acoustic communication; advertisement song; anuran; diel patterns; urban areas.

        · abstract in Spanish     · text in Spanish     · Spanish ( pdf )