碩士 / 國立中山大學 / 海洋生物研究所 / 83 / Sounds produced by Tursiops gilli were recorded from Jan 1993
to Jan 1995 in Peng-Hu island, Taiwan. Results are based
on data of behavioural observation from focal
indification and simultaneous recordings of underwater
vocalizations. A particular whistle contour associated with
jumping was observed. Sounds produced by, Tursiops aduncus
were recorder from Dec 1994 to Feb 1995, in Ocean World,
Taiwan. The dolphins were also captured from the watters
around Peng-Hu island. The whist le''s physical
characteristics of these two ''species'' were described using
four time-domain variables and four frequency-domain
variables. Data were subjected to principal components
analysis (PCA) and canonical discriminant analysis (CDA).
PCA demonstrated the range and variance of the whistle
contours of the two ''species''. CDA demonstrated differences in
the whistles between these two ''species'' and proved a good
discriminant function of two ''species''. Whistles of
Tursiops aduncus differed in shape (frequen cy modulation)
from T. gilli and were generally of shorter duration and
lower overall frequency than those of Tursiops gilli
whistles. T. gilli is considered more closely related to T.
truncatus as the two share an unique acoustic characters.
| Identifer | oai:union.ndltd.org:TW/083NSYSU270003 |
| Date | January 1995 |
| Creators | Wu, Chaw-En, 吳昭瑩 |
| Contributors | Mok, Hin-Kiu, 莫顯蕎 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 127 |
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