Behavior, Social Structure, and Communication - 2009 Reports

Quantifying parameters of bottlenose dolphin signature whistles

Feb 16, 2009 No comments

In an effort to standardize how multi-looped whistles are treated across studies, we recently had a note accepted by the journal Marine Mammal Science demonstrating that inter-loop intervals in stereotyped sequences of disconnected loops (multiple elements) are shorter and more consistent (less variable) than are the intervals between successive whistles. For whistles with multiple disconnected [...]

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Whistles as potential indicators of stress in bottlenose dolphins

Jan 14, 2009 No Comments

We recently had a manuscript accepted by the Journal of Mammalogy reporting the potential use of whistles as indicators of stress in bottlenose dolphins. In particular, we examined the possibility that parameters of bottlenose dolphin signature whistles may serve as indicators of some level of stress. Bottlenose dolphins in Sarasota Bay, Florida, have been recorded [...]

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Signature whistle identification, perception and development

Jan 12, 2009 No Comments

In 2008, we completed experiments (described in previous issues of Nicks’n’Notches) aimed at determining whether dolphins can recognize each others’ whistles by means of voice cues, in the same manner that most people recognize the voices of people that they know. Data are being prepared for publication, and analyses so far indicate that dolphins do [...]

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Analyses of genetic relatedness within a dolphin community

Jan 09, 2009 No Comments

We have been conducting analyses of new and archived genetic samples along with existing data to develop a more complete understanding of the genetic structure of the Sarasota Bay dolphin community. In particular, we are interested in defining the role of relatedness in observed social patterns. Building on previous genetic analyses confirming mother-calf pairings, identifying [...]

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Juvenile dolphin behavioral development and survival strategies

Jan 01, 2009 No Comments

The juvenile life stage is both fragile and formative for young marine mammals first learning to navigate their complex social and ecological environment independent of their mothers. While bottlenose dolphins are well-studied, virtually no prior work focused on understanding behavioral development between weaning and sexual maturity or determining factors influencing survivorship of independent juveniles. Because [...]

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