Résumé
In groups of female and immature Physeter macrocephalus off the Galapagos Islands multivariate analysis showed the rates of performing visually observable activities and vocalizing to be largely represented by an axis termed Sociality. About 3/4 of the time sperm whales engaged in relatively stereotyped foraging for food, diving regularly, moving steadily, appearing only briefly at the surface in small clusters, and making regularly spaced trains of "usual' clicks. However, for periods which usually lasted either about one or about five hours, and often in the afternoon, the whales would aggregate at the surface, usually in large, slow-moving clusters, often making patterned series of clicks called "codas'. There was considerable variation in the behaviour observed, and sounds heard, during these periods of Aggregation. Results are consistent with the hypothesis that a primary function of periods at the surface is the maintenance of social bonds. -from Authors
Langue d'origine | English |
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Pages (de-à) | 275-296 |
Nombre de pages | 22 |
Journal | Behaviour |
Volume | 118 |
Numéro de publication | 3-4 |
DOI | |
Statut de publication | Published - 1991 |
Note bibliographique
Funding Information:1) Our research has been principally funded by the Natural Sciences and Engineering Research Council of Canada, the International Whaling Commission, M. CLARK, the Green Island Foundation and the Dalhousie University Research Development Fund. World Wildlife Fund and D. DAY kindly loaned equipment. We are very grateful to all those who took part in the research at sea but especially to T. ARNBOM, A. BROOKS, L. FAWCETT, C. HENDRICKSON, B. LAMBERT, K. LYNCH, V. PAPASTAVROU, S. SMITH, C. SMYTHEJ,. STANIFORTH, S. STANIFORTH, and S. WATERSW. e thank the Charles Darwin Research Station, and especially G. RECK, S. HARCOURaTn d H. KASTELEIJN, and the Galápagos National Park Service for support and assistance. J. BLACK helped us greatly in Quito and G. MERLENa nd G. DAVISc ame to our rescue several times. R. G. BOUTILIEaRd vised on diving physiology and A. FAUCHER, N. R. LILEY, K. S. NORRIS, K. RICHARD, P. TYACKa nd an anonymous reviewer gave manuscripts. useful reviews of
ASJC Scopus Subject Areas
- Animal Science and Zoology
- Behavioral Neuroscience