BEHAVIORAL DEVELOPMENT IN WILD BOTTLENOSE DOLPHIN NEWBORNS (TURSIOPS SP.) by JANET MANN 1,2) and BARBARA SMUTS 3,4) ( 1 Departments of Psychology & Biology, Georgetown University, Washington DC 20057; 3 Departments of Psychology & Anthropology, 4014 East Hall, 525 East University, The University of Michigan, Ann Arbor, MI 48109-1109, USA) (Acc. 22-III-1999) Summary Newborn characteristics, patterns of motoric and social behavioural development, and mother-infant relationships in free-ranging and semi-provisioned bottlenose dolphins ( Tur- siops sp.) are examined. Nine newborns were observed for 189 hours over the rst 10 weeks of life. Newborn infants breathe more often than their mothers, and synchronize their breath- ing and swimming with her soon after birth, but show a gradual decline in synchrony as they age. Virtually all patterns of infant behaviour, mother-infant proximity, and spatial relation- ships with the mother changed as a function of infant age. Maternal activity, however, does not change over time, except that mothers decrease their role in maintaining proximity to their infants from the rst month to the second month of infant life. Infants spend less time 2) Corresponding author; e-mail address: MannJ2@Gunet.Georgetown.Edu 4) We’d like to thank Julie Gros-Louis, Heidi West, Caryanne Cadman, Ferdinand Arcinue,
Behaviour – Brill
Published: Jan 1, 1999
Keywords: INFANTS; LOCOMOTION; TURSIOPS; PROVISIONING; DEVELOPMENT; BOTTLENOSE DOLPHINS
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