[MARMAM] New publication on interactions of bottlenose dolphins and Antillean manatee calves

Eric Angel Ramos eric.angel.ramos at gmail.com
Wed Jan 10 12:21:05 PST 2024

Greetings MARMAM,

I am pleased to announce the publication of our newest open access article
in PLOS One titled:
"Agonistic interactions initiated by adult bottlenose dolphins on Antillean
manatee calves in the Caribbean Sea"

The dynamics and drivers of inter-species interactions in the wild are
poorly understood, particularly those involving social animal species.
Inter-species interactions between ceta- ceans and sirenians have rarely
been documented and investigated. Here, we report 10 cases of interaction
initiated by adult bottlenose dolphins (Tursiops truncatus) towards Antil-
lean manatee (Trichechus manatus manatus). Interactions were documented
through behavioral observations in the wild (n = 7) and from the
examination of orphaned calves (i.e., tooth rake marks on their body; n =
4) that entered a rehabilitation facility, one individual both observed
interacting with dolphins and found stranded with bite marks. Bottlenose
dol- phins were observed interacting with orphan manatee calves and with
mother-calf pairs, exhibiting agonistic behavior (n = 2), affiliative or
neutral behaviors (n = 1), but the behavioral contexts of these
interactions remain unclear in most cases (n = 7). Information on stranded
individuals was collected from four calves (of 13 examined calves)
recovered in poor condi- tion with bottlenose dolphin tooth rakes and bite
wounds on their bodies, one of which died. Injury from bite wounds varied
in extent and severity, ranging from superficial scratches leaving rake
marks to deep lacerations. Our findings suggest the regular occurrence of
ago- nistic behaviors initiated by adult bottlenose dolphins and directed
toward manatee calves. However, the drivers of these interactions remain
unknown and need to be further investigated.

The article can be downloaded free here:

If you have any questions, please feel free to reach out to me at
eric.angel.ramos at gmail.com.

Best regards,

*Eric Angel Ramos, Ph.D.*
Scientist at FINS (Fundación Internacional para la Naturaleza y la

Member of the IUCN SSC Sirenian Specialist Group for Mesoamerica

www.finsconservation.org <https://finsconservation.org/>
E-mail: eric.angel.ramos at gmail.com
Facebook <https://www.facebook.com/ericangelramos> | Twitter
<https://twitter.com/EricAngelRamos> | Instagram
ResearchGate <https://www.researchgate.net/profile/Eric_Ramos> | ORCiD
<https://orcid.org/0000-0003-4803-3170> | LinkedIn
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