BEHAVIORAL DEVELOPMENT IN WILD BOTTLENOSE DOLPHIN NEWBORNS (TURSIOPSSP.) 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
than all other age classes. The patterns of tooth rake presence and prevalence likely result from sexual coercion of adult females by adult males and intra-sexual male competition. Keywords : intra-specific aggression, female tolerance, sexual coercion, tooth rakes, bot- tlenose dolphins, Tursiopssp
advertisement. - Behaviour 69, p. 145-170. Connor, R.C. & Smolker, R.S. (1985). Habituated dolphins (Tursiopssp.) in Western Aus- tralia. - J. Mamm. 66, p. 398-400. -- , -- & Richards, A.F. (1992a). Two levels of alliance formation among male bottlenose dolphins (Tursiopssp.). - Proc. Natl. Acad. Sci. 89, p
sources, learned potentially years prior, during periods of drought (Viljoen, 1990 ; Payne, 2003 ), which may promote the success of their calves compared to other individuals (Foley et al., 2008 ). Specific individuals in groups of bottlenose dolphins ( Tursiopssp.) in New Zealand waters have also
; Sekiguchi & Kohshima, 2003 ; Lyamin et al., 2005 , 2007 ). Other studies, examining resting behaviours by adult bottlenose dolphins ( Tursiopssp.) and dolphin mother–calf pairs, highlighted the necessity to include slow, pattern swims (i.e., swim-rest) as an alternative means by which dolphins may rest
infants during the first two years of life . —
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( 2006 ).
Why do dolphins jump? Interpreting the behavioural repertoire of bottlenose dolphins ( Tursiopssp.) in Doubtful Sound, New Zealand . —
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in Schaeff, 2007 ; reviewed in Mesnick & Ralls, 2009 ). The few existing studies of behavioural mechanisms of paternity control in cetaceans have focused mostly on overt male contest competition (reviewed in Schaeff, 2007 ) and/or on bottlenose dolphins ( Tursiopssp.; reviewed in Connor et al
bottlenose dolphins ( Tursiopssp.) . —
Proc. Natl. Acad. Sci. USA
987 - 990 .
( 2000 ).
The bottlenose dolphin: social relationships in a fission–fusion society . — In:
Cetacean societies (
leaping had a positive effect on the proportion of individuals observed resting. Clean leaping also had a negative effect on the proportion of individuals observed travelling.
Similar to previous studies in bottlenose ( Tursiopssp.; Lusseau, 2006 ), dusky (Würsig & Würsig