Sounds of feeding 'work-ups' provide cues for food availability

Rosalyn L. Putland; John Atkins; Craig A. Radford

doi:10.1121/2.0000240

Sounds of feeding 'work-ups' provide cues for food availability

Rosalyn L. Putland, John Atkins, Craig A. Radford

Biology (Duluth)

Research output: Contribution to journal › Conference article › peer-review

1 Scopus citations

Abstract

A feeding 'work-up' is a multi-species aggregation involving dolphins, diving gannets and whales feeding on schooling bait fish. The hypothesis is that sounds produced during a 'workup', which can potentially be heard a significant distance away, provide key cues of food availability. Using drifting hydrophones feeding 'work-ups' were recorded throughout the Hauraki Gulf, New Zealand. Diving gannet 'thumps', fish 'grunts' and bottlenose dolphin 'moans' had peak frequencies of 83 Hz, 460 Hz, 670 Hz respectively. The recorded sounds were within the hearing capabilities of sharks, large pelagic fish, pinnipeds and cetaceans, therefore it is suggested both con and hetero-specific species are able to detect the acoustic cues.

Original language	English (US)
Article number	070001
Journal	Proceedings of Meetings on Acoustics
Volume	27
Issue number	1
DOIs	https://doi.org/10.1121/2.0000240
State	Published - Jul 10 2016
Event	4th International Conference on the Effects of Noise on Aquatic Life 2016 - Dublin, Ireland Duration: Jul 10 2016 → Jul 16 2016

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abstract = "A feeding 'work-up' is a multi-species aggregation involving dolphins, diving gannets and whales feeding on schooling bait fish. The hypothesis is that sounds produced during a 'workup', which can potentially be heard a significant distance away, provide key cues of food availability. Using drifting hydrophones feeding 'work-ups' were recorded throughout the Hauraki Gulf, New Zealand. Diving gannet 'thumps', fish 'grunts' and bottlenose dolphin 'moans' had peak frequencies of 83 Hz, 460 Hz, 670 Hz respectively. The recorded sounds were within the hearing capabilities of sharks, large pelagic fish, pinnipeds and cetaceans, therefore it is suggested both con and hetero-specific species are able to detect the acoustic cues.",

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N2 - A feeding 'work-up' is a multi-species aggregation involving dolphins, diving gannets and whales feeding on schooling bait fish. The hypothesis is that sounds produced during a 'workup', which can potentially be heard a significant distance away, provide key cues of food availability. Using drifting hydrophones feeding 'work-ups' were recorded throughout the Hauraki Gulf, New Zealand. Diving gannet 'thumps', fish 'grunts' and bottlenose dolphin 'moans' had peak frequencies of 83 Hz, 460 Hz, 670 Hz respectively. The recorded sounds were within the hearing capabilities of sharks, large pelagic fish, pinnipeds and cetaceans, therefore it is suggested both con and hetero-specific species are able to detect the acoustic cues.

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Sounds of feeding 'work-ups' provide cues for food availability

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