Agonistic intraspecific behavior in free-ranging bottlenose dolphins: Calf-directed aggression and infanticidal tendencies by adult males

2013 ◽  
Vol 30 (1) ◽  
pp. 381-388 ◽  
Author(s):  
Kevin P. Robinson
Keyword(s):  
Bottlenose Dolphins ◽  
Adult Males ◽  
Free Ranging ◽  
Intraspecific Behavior

scholarly journals Behaviourally specific preferred associations in bottlenose dolphins, Tursiops spp.

2005 ◽  
Vol 83 (12) ◽  
pp. 1566-1573 ◽  
Author(s):  
S Gero ◽  
L Bejder ◽  
H Whitehead ◽  
J Mann ◽  
R C Connor
Keyword(s):  
Social Relationships ◽  
Bottlenose Dolphins ◽  
Adult Males ◽  
Short Term ◽  
Shark Bay ◽  
Behavioural State ◽  
The Social ◽  
Association Group ◽  
Males And Females ◽  
Free Ranging

We investigated association patterns of 52 photographically identified, free-ranging bottlenose dolphins (Tursiops spp. Gervais, 1855) across four behavioural states (rest, travel, social, and foraging/feeding) to investigate how behavioural state influences patterns of association. Group composition and behavioural data were extracted from 2178 encounter surveys collected over 3 years. Analyses revealed three general types of association: (1) affiliates, which consistently demonstrate preferred associations across all behavioural states; (2) acquaintances, which never form preferred associations but still associate in at least one behavioural state; and (3) behavioural associates, which form preferred associations in at least one, but not all behavioural states. The majority of associations in Shark Bay, Australia, are acquaintance type (38.2%), with affiliates (5.7%, principally between adult males) and behavioural associates (28.9%, principally between juveniles) being relatively rarer. Permutation tests identified behaviourally specific preferred associations during all behavioural states. Although behaviourally specific preferred associations appear to exist within the Shark Bay social structure, it seems that the social organization and mating system constrain the social relationships for the majority of males and females in differing ways which prevent them from having behavioural associates, leaving juveniles free to associate based on short-term expediency and behavioural specific needs.

Human Interactions with Free-Ranging and Captive Bottlenose Dolphins

Anthrozoös ◽  
1995 ◽  
Vol 8 (1) ◽  
pp. 44-53 ◽  
Author(s):  
Toni G. Frohoff ◽  
Jane M. Packard
Keyword(s):  
Bottlenose Dolphins ◽  
Human Interactions ◽  
Free Ranging

scholarly journals PAPILLOMAVIRUS ANTIBODY PREVALENCE IN FREE-RANGING AND CAPTIVE BOTTLENOSE DOLPHINS (TURSIOPS TRUNCATUS)

2010 ◽  
Vol 46 (1) ◽  
pp. 136-145 ◽  
Author(s):  
Manuela Rehtanz ◽  
Shin-je Ghim ◽  
Wayne McFee ◽  
Bethany Doescher ◽  
Géraldine Lacave ◽  
...  
Keyword(s):  
Tursiops Truncatus ◽  
Bottlenose Dolphins ◽  
Antibody Prevalence ◽  
Free Ranging

scholarly journals AEROBIC MICROORGANISMS ASSOCIATED WITH FREE-RANGING BOTTLENOSE DOLPHINS IN COASTAL GULF OF MEXICO AND ATLANTIC OCEAN WATERS

2006 ◽  
Vol 42 (3) ◽  
pp. 536-544 ◽  
Author(s):  
John D. Buck ◽  
Randall S. Wells ◽  
Howard L. Rhinehart ◽  
Larry J. Hansen
Keyword(s):  
Atlantic Ocean ◽  
Gulf Of Mexico ◽  
Bottlenose Dolphins ◽  
Free Ranging

scholarly journals Laser photogrammetry reveals variation in growth and early survival in free-ranging bottlenose dolphins

2017 ◽  
Vol 21 (3) ◽  
pp. 252-261 ◽  
Author(s):  
B. Cheney ◽  
R. S. Wells ◽  
T. R. Barton ◽  
P. M. Thompson
Keyword(s):  
Bottlenose Dolphins ◽  
Early Survival ◽  
Free Ranging

scholarly journals An Ethology of Adaptation: Dolphins Stop Feeding but Continue Socializing in Construction-Degraded Habitat

2021 ◽  
Vol 8 ◽  
Author(s):  
Ann Weaver
Keyword(s):  
Linear Models ◽  
Negative Binomial ◽  
Environmental Changes ◽  
Bottlenose Dolphins ◽  
Observation Time ◽  
Mixed States ◽  
The West ◽  
Behavioral Adaptations ◽  
Construction Zone ◽  
Free Ranging

Adaptation is a biological mechanism by which organisms adjust physically or behaviorally to changes in their environment to become more suited to it. This is a report of free-ranging bottlenose dolphins’ behavioral adaptations to environmental changes from coastal construction in prime habitat. Construction was a 5-year bridge removal and replacement project in a tidal inlet along west central Florida’s Gulf of Mexico coastline. It occurred in two consecutive 2.5-year phases to replace the west and east lanes, respectively. Lane phases involved demolition/removal of above-water cement structures, below-water cement structures, and reinstallation of below + above water cement structures (N = 2,098 photos). Data were longitudinal (11 years: 2005–2016, N = 1,219 surveys 2–4 times/week/11 years, N = 4,753 dolphins, 591.95 h of observation in the construction zone, 126 before-construction surveys, 568 during-construction surveys, 525 after-construction surveys). The dependent variable was numbers of dolphins (count) in the immediate construction zone. Three analyses examined presence/absence, total numbers of dolphins, and numbers of dolphins engaged in five behavior states (forage-feeding, socializing, direct travel, meandering travel, and mixed states) across construction. Analyses were GLIMMIX generalized linear models for logistic and negative binomial regressions to account for observation time differences as an exposure (offset) variable. Results showed a higher probability of dolphin presence than absence before construction began, more total dolphins before construction, and significant decreases in the numbers of feeding but not socializing dolphins. Significant changes in temporal rhythms also revealed finer-grained adaptations. Conclusions were that the dolphins adapted to construction in two ways, by establishing feeding locations beyond the disturbed construction zone and shifting temporal rhythms of behaviors that they continued to exhibit in the construction zone to later in the day when construction activities were minimized. This is the first study to suggest that the dolphins learned to cope with coastal construction with variable adjustments.

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