Studies of Hypanus americanus have shown that they communicate through pheromone signaling. Males communicate with females before copulating by touching and biting the females. Also, after the female gives birth, she releases pheromones that are most likely believed to be produced in her cloaca; one study reported that the birth of offspring attracted males.
Research on Hypanus americanus shows that they communicate through pheromone signals. Male Hypanus americanus use touching and biting to convey messages to females before mating. After the female gives birth, she releases pheromones believed to be produced in her cloaca; one study found this behavior attracted males.