[MARMAM] Publication on manatee anticipatory behavior

Eric Angel Ramos eric.angel.ramos at gmail.com
Wed Jun 7 12:47:42 PDT 2023

Greetings MARMAM,

I am pleased to share our newest open access publication in Zoo Biology
titled: "Antillean manatee calves in captive rehabilitation change vocal
behavior in anticipation of feeding," The article can be downloaded free
from the link below:

*Ramos, E. A., Brady, B., Lasala, J. A., Liebschner, A., Obbink, S.,
Walker, Z., Rebello, M., & Magnasco, M. O. (2023). Antillean manatee calves
in captive rehabilitation change vocal behavior in anticipation of feeding.
Zoo Biology, 1–7. https://doi.org/10.1002/zoo.21785
<https://doi.org/10.1002/zoo.21785> *


*Abstract *
Captive animals typically develop anticipatory behaviors, actions of
increased frequency done in anticipation of an event such as feeding.
Anticipatory behaviors can be an indicator of an animal's welfare. However,
for rehabilitating animals that are expected to be reintroduced into the
wild, these behaviors need to be extinguished to ensure successful release.
Scheduled activities such as feeding occur daily and vocalizations could
potentially be used to identify anticipatory behavior. Here, we tested the
hypothesis that manatee calves modify their vocal production rate as a form
of anticipatory behavior. Vocalizations of two Antillean manatee
(Trichechus manatus manatus) calves were recorded for 10 min before,
during, and after feeding sessions at Wildtracks, a manatee rehabilitation
center in Belize. The number of calls were counted across recording
sessions and three acoustic parameters were measured from calls including
duration, frequency modulation, and center frequency. A repeated measures
ANOVA comparing the number of calls across sessions indicated manatees
produced significantly more calls before feeding sessions than during and
after sessions. In addition, manatees increased the duration and lowered
the frequency of calls before feeding sessions. This information can give
further insight on ways to improve rehabilitation protocols and manage
human interactions to increase the overall survival rate of rehabilitated
manatees when released back into the wild.

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

Best regards,

*Eric Angel Ramos, Ph.D.*
Postdoctoral Research Associate at The University of Vermont
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
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<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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