Timing and context of dolphin clicks during and after mine simulator detection and marking in the open ocean
Two dolphins carrying cameras swam in the ocean as they searched for and marked mine simulators – buried, proud or moored. As the animals swam ahead of a boat they searched the ocean. Cameras on their harness recorded continuous sound and video. Once a target was detected, the dolphins received a ma...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
The Company of Biologists
2018-02-01
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| Series: | Biology Open |
| Subjects: | |
| Online Access: | http://bio.biologists.org/content/7/2/bio031625 |
| _version_ | 1818733754924924928 |
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| author | Sam H. Ridgway Dianna S. Dibble Jaime A. Kennemer |
| author_facet | Sam H. Ridgway Dianna S. Dibble Jaime A. Kennemer |
| author_sort | Sam H. Ridgway |
| collection | DOAJ |
| description | Two dolphins carrying cameras swam in the ocean as they searched for and marked mine simulators – buried, proud or moored. As the animals swam ahead of a boat they searched the ocean. Cameras on their harness recorded continuous sound and video. Once a target was detected, the dolphins received a marker to take to the simulator's location. During search and detection, dolphins made almost continuous trains of varying interval clicks. During the marking phase, shorter click trains were interrupted by periods of silence. As the dolphins marked simulators, they often produced victory squeals – pulse bursts that vary in duration, peak frequency and amplitude. Victory squeals were produced on 72% of marks. Sometimes after marking, or at other times during their long swims, the dolphins produced click packets. Packets typically consisted of two to 10 clicks with inter-click intervals of 7-117 ms followed by a silence of 223-983 ms. Click packets appeared unrelated with searching or marking. We suggest that the packets were used to improve signal to noise ratios for locating a boat or other distant object. Victory squeals produced when marking the targets suggest to us that the dolphins know when they have succeeded in this multipart task. |
| first_indexed | 2024-12-17T23:54:30Z |
| format | Article |
| id | doaj.art-93c4b20bd11e42be9e3f190a51b0d1c3 |
| institution | Directory Open Access Journal |
| issn | 2046-6390 |
| language | English |
| last_indexed | 2024-12-17T23:54:30Z |
| publishDate | 2018-02-01 |
| publisher | The Company of Biologists |
| record_format | Article |
| series | Biology Open |
| spelling | doaj.art-93c4b20bd11e42be9e3f190a51b0d1c32022-12-21T21:28:05ZengThe Company of BiologistsBiology Open2046-63902018-02-017210.1242/bio.031625031625Timing and context of dolphin clicks during and after mine simulator detection and marking in the open oceanSam H. Ridgway0Dianna S. Dibble1Jaime A. Kennemer2 Neurobiology Group, National Marine Mammal Foundation, 2240 Shelter Island Drive #200, San Diego, CA 92106, USA Neurobiology Group, National Marine Mammal Foundation, 2240 Shelter Island Drive #200, San Diego, CA 92106, USA U.S. Navy Marine Mammal Program, Space and Naval Warfare Systems Center San Diego 53560 Hull Street, San Diego, CA 92152 , USA Two dolphins carrying cameras swam in the ocean as they searched for and marked mine simulators – buried, proud or moored. As the animals swam ahead of a boat they searched the ocean. Cameras on their harness recorded continuous sound and video. Once a target was detected, the dolphins received a marker to take to the simulator's location. During search and detection, dolphins made almost continuous trains of varying interval clicks. During the marking phase, shorter click trains were interrupted by periods of silence. As the dolphins marked simulators, they often produced victory squeals – pulse bursts that vary in duration, peak frequency and amplitude. Victory squeals were produced on 72% of marks. Sometimes after marking, or at other times during their long swims, the dolphins produced click packets. Packets typically consisted of two to 10 clicks with inter-click intervals of 7-117 ms followed by a silence of 223-983 ms. Click packets appeared unrelated with searching or marking. We suggest that the packets were used to improve signal to noise ratios for locating a boat or other distant object. Victory squeals produced when marking the targets suggest to us that the dolphins know when they have succeeded in this multipart task.http://bio.biologists.org/content/7/2/bio031625DolphinClicksClick packetsVictory squealMine simulatorsCameras |
| spellingShingle | Sam H. Ridgway Dianna S. Dibble Jaime A. Kennemer Timing and context of dolphin clicks during and after mine simulator detection and marking in the open ocean Biology Open Dolphin Clicks Click packets Victory squeal Mine simulators Cameras |
| title | Timing and context of dolphin clicks during and after mine simulator detection and marking in the open ocean |
| title_full | Timing and context of dolphin clicks during and after mine simulator detection and marking in the open ocean |
| title_fullStr | Timing and context of dolphin clicks during and after mine simulator detection and marking in the open ocean |
| title_full_unstemmed | Timing and context of dolphin clicks during and after mine simulator detection and marking in the open ocean |
| title_short | Timing and context of dolphin clicks during and after mine simulator detection and marking in the open ocean |
| title_sort | timing and context of dolphin clicks during and after mine simulator detection and marking in the open ocean |
| topic | Dolphin Clicks Click packets Victory squeal Mine simulators Cameras |
| url | http://bio.biologists.org/content/7/2/bio031625 |
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