Potential Infanticide Attempt of Common Bottlenose Dolphins on a Young Calf in a Tropical Caribbean Atoll
- Behavior
Abstract
Infanticidal behavior (i.e., the intentional killing of young) is common in the animal kingdom. Common bottlenose dolphins (Tursiops truncatus) engage extensively in intraspecific agonistic behaviors, and infanticidal behavior has been documented in many dolphin populations. However, these behaviors remain poorly understood in dolphins as descriptions of these events remain rare. Here, we report on an event involving agonistic intraspecific behavior of multiple bottlenose dolphins directed towards of a young calf at Turneffe Atoll, Belize. Boat-based surface observations, brief surface video, and photo analysis were used to identify individual dolphins. All dolphins were confirmed as part-time and long-term residents by matching dorsal fins to the long-term photo-ID catalog of local dolphins. Multiple dolphins displayed agonistic and likely injurious behavior towards the calf, including ramming and flipping it into the air and forcefully submerging it. Vocalizations recorded in surface video (whistles and burst-pulses) coincided with calf surface times. The repetition of a downsweeping contour was possibly associated with its distress.
Ramos, E.A., Szczepaniak, I.D., Kaplan, J.D. and Reiss, D., 2022. Potential Infanticide Attempt of Common Bottlenose Dolphins (Tursiops truncatus) on a Young Calf in a Tropical Caribbean Atoll. Aquatic Mammals, 48(2), pp.132-141.
Related Publications
{"image":"\/Animals\/Patients\/Harbor seals\/hs-by-bill-hunnewell-c-the-marine-mammal-center.jpg","alt":"harbor seal in a life preserver enrichment item","title":"Enrichment as a Tool for Rehabilitating Harbor Seals","link_url":"https:\/\/www.marinemammalcenter.org\/publications\/enrichment-as-a-tool-for-rehabilitating-harbor-seals","label":"Research Paper"}
{"image":"\/Animals\/Wild\/Harbor porpoise\/cropped-images\/harbor-porpoises-foraging-by-marc-webber-c-the-marine-mammal-center-4-0-1276-996-1618438446.jpg","alt":"harbor porpoises eating a large fish","title":"Prey-Related Suffocation in Harbor Porpoises","link_url":"https:\/\/www.marinemammalcenter.org\/publications\/prey-related-suffocation-in-harbor-porpoises","label":"Research Paper"}
{"image":"\/Animals\/Wild\/Harbor porpoise\/cropped-images\/harbor-porpoises-aerial-view-badge-by-marc-webber-c-the-marine-mammal-center-0-88-1280-999-1618509985.jpg","alt":"Harbor porpoises seen from above","title":"Coevolution of Asymmetric and Spiraled Genitalia with Unique Mating Behavior","link_url":"https:\/\/www.marinemammalcenter.org\/publications\/coevolution-of-asymmetric-and-spiraled-genitalia-with-unique-mating-behavior","label":"Research Paper"}
Coevolution of Asymmetric and Spiraled Genitalia with Unique Mating Behavior
Read More{"image":"\/Animals\/Wild\/Harbor porpoise\/harbor-porpoise-shutterstock-2.jpg","alt":"harbor porpoise","title":"Harbor Porpoises Catching and Handling Large Fish","link_url":"https:\/\/www.marinemammalcenter.org\/publications\/harbor-porpoises-catching-and-handling-large-fish","label":"Research Paper"}
Related News
{"image":"\/Animals\/Wild\/Hawaiian monk seal\/cropped-images\/hms-wild-photo-1-c-noaa-pifsc-hmsrp-35-0-1270-992-1759760452.jpg","alt":"A Hawaiian monk seal rests on its side on a sandy beach.","title":"Where Do Hawaiian Monk Seals Live? And Other \u2018\u012alio Holo I Ka Uaua Trivia","link_url":"https:\/\/www.marinemammalcenter.org\/news\/where-do-hawaiian-monk-seals-live-and-other-ilio-holo-i-ka-uaua-trivia","label":"News Update","date":"2025-10-06 00:00:00"}
Where Do Hawaiian Monk Seals Live? And Other ‘Īlio Holo I Ka Uaua Trivia
October 6, 2025
Read More{"image":"\/Animals\/Patients\/Elephant seals\/cropped-images\/es-hoffman47927-photo-by-bill-hunnewell-c-the-marine-mammal-center-124-0-1270-992-1748384535.jpg","alt":"An An elephant seal\u2019s face with long black whiskers and wide eyes emerges from the water. ","title":"Adaptations of the Deep: Seal Whiskers and Eyes","link_url":"https:\/\/www.marinemammalcenter.org\/news\/adaptations-of-the-deep-seal-whiskers-and-eyes","label":"Patient Update","date":"2025-05-28 02:00:00"}
{"image":"\/Animals\/Wild\/Harbor seal\/cropped-images\/harbor-seals-shutterstock-107-0-1270-992-1744225508.jpg","alt":"A group of harbor seal pups and mothers on the beach during pupping season.","title":"Your Guide to Seeing Harbor Seal Pups in California","link_url":"https:\/\/www.marinemammalcenter.org\/news\/your-guide-to-seeing-harbor-seal-pups-in-california","label":"News Update","date":"2025-04-10 00:00:00"}
{"image":"\/Animals\/Wild\/Humpback whale\/cropped-images\/humpback-whale-sea-lions-photo-c-bill-hunnewell-102-0-1270-992-1743014972.jpg","alt":"A California sea lion jumps out of the ocean next to a humpback whale showing its tail and another whale showing its back.","title":"What is the Loudest Animal on Earth? And Other Animal Trivia","link_url":"https:\/\/www.marinemammalcenter.org\/news\/what-is-the-loudest-animal-on-earth-and-other-animal-trivia","label":"News Update","date":"2025-03-26 07:00:00"}
