You are here: Home / Journal Articles / The new filed of science for human-animal interaction : Healthy society with animal science : I. Increased number of whistle of Bottlenose dolphins, Tursips Truncatus, arising from interaction with people / About

The new filed of science for human-animal interaction : Healthy society with animal science : I. Increased number of whistle of Bottlenose dolphins, Tursips Truncatus, arising from interaction with people

By Ota Mitsuaki, Sakata Ryoichi, Tanaka Toshio

View Link (HTM)

Licensed under

Category Journal Articles
Abstract

The acoustic mode is the most reasonable means for social animals such as dolphins to maintain contact in the underwater habitat, and has been developed since they moved to the sea. This study investigates variations in dolphin vocalizations under the following conditions in a captive environment : 1) before feeding (Pre-feeding), 2) during feeding (Feeding), 3) during free time without the presence of people (Free), 4) during interaction with people located upon a float (Float), 5) during interaction with people in the water (Water). During the experiments, a total of 2642 whistles were extracted from sonogram data using a spectrogram. About 44% of the total whistles were observed during Pre-feeding (1171/2642), and the number recorded during Free, when people were absent, was the smallest. The acoustic contours of dolphin whistles differed in different situations : convex, wave, and trill whistles were made repeatedly during Pre-feeding, thereby being more common at this time than at other times. The situation of Feeding saw an increased number of Upsweeps, which might be related to the use of echolocation. The lower frequencies were recorded during Pre-feeding, reflecting the emotion related to the dolphin's hunger. The results of this study indicate that dolphins increase their vocalization during interaction with people, suggesting that interactions with dolphins provide an effective treatment for human health problems, which is discussed with a reference article in this study. Vocal data obtained during contact with humans might serve as an important index for the dolphin-assisted therapy. 

Submitter

Katie Carroll

Date 2006
Publication Title Journal of Azabu University
Volume 13/14
Pages 280-286
URL https://az.repo.nii.ac.jp/?action=pages_view_main&active_action=repository_view_main_item_detail&item_id=1989&item_no=1&page_id=15&block_id=18
Language English
Additional Language English
Cite this work

Researchers should cite this work as follows:

Tags
  1. Animal roles
  2. Animal science
  3. Animal welfare
  4. China
  5. Dolphins
  6. Fish
  7. Human-animal interactions
  8. Nature