scholarly journals Exploration of Horizontal Information Transmission through Social Learning in Juvenile Atlantic Spotted Dolphins (Stenella frontalis)

2017 ◽  
Vol 4 (4) ◽  
pp. 425-441
Author(s):  
Gaïane L. B. De Brabanter ◽  
Denise L. Herzing ◽  
Susan Jarvis
Keyword(s):  
Social Learning ◽  
Information Transmission ◽  
Stenella Frontalis ◽  
Atlantic Spotted Dolphins

scholarly journals Aggressive Behaviors of Adult Male Atlantic Spotted Dolphins: Making Signals Count during Intraspecific and Interspecific Conflicts

2021 ◽  
Vol 8 (1) ◽  
pp. 35-51
Author(s):  
Cassandra L. Volker ◽  
Denise L. Herzing
Keyword(s):  
Adult Male ◽  
Behavioral Plasticity ◽  
Bottlenose Dolphins ◽  
Sympatric Species ◽  
Aggressive Behaviors ◽  
Interspecific Aggression ◽  
Behavioral Types ◽  
Stenella Frontalis ◽  
Behavioral Type ◽  
Atlantic Spotted Dolphins

Some species exhibit behavioral plasticity by altering their aggressive behavior based on their opponent. Atlantic spotted dolphins (Stenella frontalis) and bottlenose dolphins (Tursiops truncatus) are two sympatric species resident to the northern Bahamas. We examined whether groups of adult male spotted dolphins demonstrated behavioral plasticity during two different types of aggressive interactions. We described and compared the types of aggressive behaviors used during intraspecific aggression and interspecific aggression with bottlenose dolphins. Between the years 1991-2004, twenty-two aggressive encounters (11 intraspecific (spotted only), 11 interspecific (spotted vs. bottlenose)) were behaviorally analyzed. Twenty-three specific aggressive Behavioral Events, further grouped into three Behavioral Types, were examined throughout these encounters. Similarities and differences in the use of the Behavioral Types occurred during intra- and interspecific aggression. Groups of male Atlantic spotted dolphins altered their behavior during aggressive encounters with male bottlenose dolphins. Spotted dolphins increased their use of the Pursuit Behavioral Type and did not use the Display Behavioral Type significantly more than the Contact Behavioral Type during interspecific aggression. The increased use of a more overt and energy intensive Behavioral Type, Pursuit, suggests that Atlantic spotted dolphins altered their behavior during aggressive encounters with bottlenose dolphins to compensate during fights with a larger species and/or to effectively communicate with a different species.

Synchrony during aggression in adult male Atlantic spotted dolphins (Stenella frontalis)

2017 ◽  
Vol 20 (2) ◽  
pp. 175-185 ◽  
Author(s):  
Alyson J. Myers ◽  
Denise L. Herzing ◽  
David F. Bjorklund
Keyword(s):  
Adult Male ◽  
Stenella Frontalis ◽  
Atlantic Spotted Dolphins

Biphonal calls in Atlantic spotted dolphins (Stenella frontalis): bitonal and burst-pulse whistles

Bioacoustics ◽  
2017 ◽  
Vol 27 (2) ◽  
pp. 145-164 ◽  
Author(s):  
J. Daisy Kaplan ◽  
Kelly Melillo-Sweeting ◽  
Diana Reiss
Keyword(s):  
Stenella Frontalis ◽  
Burst Pulse ◽  
Atlantic Spotted Dolphins

Reproductive success of male Atlantic spotted dolphins (Stenella frontalis) revealed by noninvasive genetic analysis of paternity

2011 ◽  
Vol 89 (3) ◽  
pp. 239-253 ◽  
Author(s):  
Michelle L. Green ◽  
Denise L. Herzing ◽  
John D. Baldwin
Keyword(s):  
Reproductive Success ◽  
Small Population ◽  
Pedigree Information ◽  
Male Reproductive Success ◽  
Age Difference ◽  
Cetacean Species ◽  
Stenella Frontalis ◽  
Atlantic Spotted Dolphins ◽  
Social Clusters ◽  
Potential Precursor

Cetaceans are known to frequently engage in sexual behavior; however, the lack of male parental investment in offspring makes assessment of male reproductive success difficult. We assessed paternity in a small population (mean individuals sighted per year = 93) of Atlantic spotted dolphins ( Stenella frontalis (G. Cuvier, 1829)) utilizing noninvasively collected fecal material. Samples (n = 88) were collected from dolphins from four social clusters. Of the 29 offspring tested, 34.5% were assigned paternity, resulting in 10 paternities assigned to seven males. Our study indicates that achieving a certain age is a potential precursor for males to mate successfully, as 18 years was the youngest estimated age of a male at the time of calf conception. In all pairings but one, the males were older than the female (mean age difference = 7.7+ years). Successful males were from two of the four social clusters and males most often mated within their social group or with females from the next geographically closest group. The study combines genetic data with known maternal pedigree information and reveals patterns in the overall mating system in a cetacean species where reproductive success of males was previously unknown.

Individual home ranges of Tursiops truncatus and their overlap with ranges of Stenella frontalis and fishermen in Aragua, Venezuela, South Caribbean

2020 ◽  
Vol 100 (5) ◽  
pp. 857-866
Author(s):  
Sergio E. Cobarrubia-Russo ◽  
Guillermo R. Barreto-Esnal ◽  
Alimar E. Molero-Lizarraga ◽  
Miguel A. Mariani-Di Lena
Keyword(s):  
Bottlenose Dolphins ◽  
Home Ranges ◽  
Minimum Convex Polygon ◽  
Stenella Frontalis ◽  
Field Surveys ◽  
Photo Identification ◽  
Ecological Aspects ◽  
Management Plans ◽  
Atlantic Spotted Dolphins ◽  
Overlap Area

AbstractThe coast of Aragua is a home of bottlenose dolphins (BND), Atlantic spotted dolphins (ASD) and fishermen (FIS) from four towns. A photo-identification study was carried out on BND to estimate their home ranges. From 2004 to 2008, 100 field surveys were carried out along 30 km of coastline (92.12 km2). In each sighting of BND, information regarding date, time, latitude/longitude and photographs were registered (ASD and FIS were registered without photography). The data were analysed using a Geographic Information System to estimate Minimum Convex Polygon (MCP) and Fixed Kernel (FK) at 95%. The home ranges of BND were estimated for seven individuals. This included three females (29–31 sightings) with estimated areas ranging from 33.90–39.90 km2 with MCP (36.79–43.31% of the study area) and from 80.47–101.31 km2 with FK (109.97–104.26%). For the remaining four dolphins (14–20 sightings) the estimated areas ranged from 9.67–22.34 km2 (MCP), the predominant depth of these home ranges varied from 51–100 m (χ2 = 24.5, df = 2, P = 4.785 × 10−6). For the pods of ASD the estimated area ranged 75.23 km2 with MCP (81.66%) and 119.86 km2 with FK (130.11%) with predominant depths of 101–200 m (χ2 = 24.5, df = 2, P = 4.785 × 10−6). The area used by FIS ranged 93.27 km2 by MCP and 228.49 km2 by FK. Finally, the overlap area of BND, ASD and FIS ranged 24.75 km2 (26.86%). We point out this locality presents important oceanographic and ecological aspects which deserve to be the subject of application of management plans for the conservation of its habitat and species.

scholarly journals Exodus! Large-scale displacement and social adjustments of resident Atlantic spotted dolphins (Stenella frontalis) in the Bahamas

PLoS ONE ◽  
2017 ◽  
Vol 12 (8) ◽  
pp. e0180304 ◽  
Author(s):  
Denise L. Herzing ◽  
Bethany N. Augliere ◽  
Cindy R. Elliser ◽  
Michelle L. Green ◽  
Adam A. Pack
Keyword(s):  
Large Scale ◽  
The Bahamas ◽  
Stenella Frontalis ◽  
Atlantic Spotted Dolphins
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