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October 22, 2025The Journal of the Acoustical Society of AmericaOpen Access

Occurrence of delphinids off Egmont Atoll, Chagos Archipelago: Detection, characterisation, and temporal variability of vocalisations

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Authors

USUdayanga SampathCEClare B. EmblingDHDanielle Harris

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Overview

Analysis shows seasonal patterns in dolphin whistles, suggesting the use of passive acoustic monitoring for understanding delphinid characterisation.

Key Points

  • Detection thresholds were set to evaluate automated whistle detectors, enhancing detection success.
  • Characterisation of dolphin whistles included categories like upsweep and sine, with precision rates reported early.
  • The analysis focused on passive acoustic monitoring from Egmont Atoll, capturing varied vocalisations over time.
  • Findings support better understanding of delphinid behaviours in remote regions, with ecological implications noted.

Cite This Study

Sampath et al. (2025) studied this question.

synapsesocial.com/papers/68f8a381c0c01e5ef8abdd8fhttps://doi.org/10.1121/10.0039671
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Also Consider

Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context:

  1. 1Use of whistles for acoustic classification of delphinids (odontoceti: Delphinidae) in the Western South Atlantic Ocean2024 · 4 citations
  2. 2Potential acoustic habitat partitioning in delphinids along the Florida Atlantic coast2025
  3. 3Differential acoustic habitat use in delphinids along the Florida Atlantic coast2026
  4. 4Preliminary insights into the acoustic presence and diel patterns of odontocetes in French Polynesia from whistle detections2026
  5. 5Identification and classification of repeated whistle types from free-ranging rough-toothed dolphins (Steno bredanensis)2026