Acoustic insights into the Rhinella marina group: revisiting the advertisement calls of two closely related species (Anura: Bufonidae)
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View abstract on PubMed
Summary
This summary is machine-generated.Advertisement calls of Rhinella marina and Rhinella diptycha differ significantly in dominant frequency, note number, and maximum frequency. This study provides new acoustic data for these toad species, aiding in their identification and conservation.
Area Of Science
- Bioacoustics
- Herpetology
- Animal Communication
Background
- The Rhinella marina group includes 11 species with wide distribution in the Americas.
- Previous acoustic descriptions of Rhinella marina and Rhinella diptycha advertisement calls were limited.
- Accurate species identification is crucial for understanding their ecology and conservation needs.
Purpose Of The Study
- To document and compare the advertisement calls of Rhinella marina and Rhinella diptycha.
- To identify acoustic variables that discriminate between R. marina and R. diptycha.
- To provide new bioacoustic data for R. marina from Brazil and R. diptycha from western Brazil.
Main Methods
- Recorded and analyzed advertisement calls of R. marina and R. diptycha.
- Compiled existing acoustic data for R. marina and R. diptycha.
- Utilized Random Forest (RF) model and Wilcoxon-Mann-Whitney Rank Test for statistical discrimination.
Main Results
- Advertisement calls of R. marina and R. diptycha were successfully distinguished using acoustic variables.
- Key discriminating features included dominant frequency, maximum frequency, and number of notes per call.
- R. marina calls: 13-52 notes, max freq 689-775 Hz, duration 6.8-20 s.
- R. diptycha calls: 1-7 notes, max freq 441-1119 Hz, duration 0.5-7.2 s.
- A population identified as R. diptycha from Natal, Brazil, likely represents R. marina.
Conclusions
- Significant acoustic differences exist between R. marina and R. diptycha advertisement calls.
- The findings support the reevaluation of advertisement calls for other R. marina group species in Brazil.
- Comprehensive bioacoustic data are needed for R. achavali and R. veredas.
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