Aggressive Behaviors Of Adult Male Atlantic Spotted Dolphins (Stenella frontalis) During Intraspecific And Interspecific Aggressive Interactions

Atlantic spotted dolphins (Stenella frontalis) and bottlenose dolphins (Tursiops
truncatus) are two sympatric species resident to the Bahamas. The visibility of the
Bahamian water provided a unique opportunity to study spotted dolphin communication
during aggression. This study’s main focus was to decipher any similarities or differences
in the behaviors used by spotted dolphins during interspecific and intraspecific
aggression. Both similarities and differences were discovered. Biting, following, and
chasing behavioral events were used more during interspecific aggression, while the
display behavioral class was used more than the contact behavioral class during intrabut
not interspecific aggression. This study showed that spotted dolphins use more energy
intensive and risky behaviors when fighting interspecifically. This could result from
having to fight and defend females from a larger species, trying to avoid sexual
harassment from bottlenose males, or needing to use behaviors that are more overt and easily understood during interspecies communication.