Males of the Strawberry Poison Frog (Oophaga pumilio) use acoustic signals during courtship and territorial interactions. In these contexts, spectro-temporal characteristics of the calls provide information on body size, territory quality, and dominance to conspecifics. Previous research on this species has associated low-rate territorial calls produced by resident males with greater aggressiveness. However, how variation in call rate of intruding males affects the response of the territorial males has not been tested experimentally. We evaluated the effect of different call-rate stimuli (low, average, and high call rate) on the acoustic and behavioral responses of territorial males of the Strawberry Poison Frog using playback experiments to simulate territorial male intrusions. We found that territorial males lowered their call rate in response to playbacks with high and average call rate. In addition, territorial males approached three times more, closer, and faster to the average and low call-rate playback stimuli than to high call-rate stimulus. Males also responded, vocalizing faster to the average and low call-rate playback stimuli than to high call-rate stimulus. Our results suggest that different call rates correlate with different levels of aggressiveness in males of the Strawberry Poison Frog. Therefore, the observed behavior supports the hypothesis that a low call rate indicates higher aggressiveness in male–male interactions.
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July 2023
Research Article|
May 10 2023
Does Variation in Call Rate Affect the Response of Territorial Males in the Strawberry Poison Frog (Oophaga pumilio)?
Ichthyology & Herpetology (2023) 111 (2): 248–253.
Article history
Received:
April 27 2021
Accepted:
February 13 2023
Citation
Francesca Protti-Sánchez, Adrián García-Rodríguez, Gilbert Barrantes, Luis Sandoval; Does Variation in Call Rate Affect the Response of Territorial Males in the Strawberry Poison Frog (Oophaga pumilio)?. Ichthyology & Herpetology 1 July 2023; 111 (2): 248–253. doi: https://doi.org/10.1643/h2021052
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