Results 11 to 20 of about 25,939 (265)

Manatee watching is widespread and seasonally affected in Northeast Brazil: a case of the Endangered Trichechus manatus manatus (Sirenia: Trichechidae)

Nature Conservation Research: Заповедная наука, 2023
Marine mammal watching is a non-consumptive wildlife-oriented tourism practice. Trichechus manatus manatus (hereinafter – Antillean manatee) belongs to the charismatic marine megafauna and is subject to this practice at many places.
Paula D. F. Coutinho, Ana L. L. Matte, Bruna Bezerra   +2 more
doaj   +2 more sources

Acoustic estimation of the manatee population and classification of call categories using artificial intelligence

Frontiers in Conservation Science
The population sizes of manatees in many regions remain largely unknown, primarily due to the challenging nature of conducting visual counts in turbid and inaccessible aquatic environments.
Sebastian Schneider, Lorenzo von Fersen, Paul Wilhelm Dierkes   +2 more
doaj   +2 more sources

Counting manatee aggregations using deep neural networks and Anisotropic Gaussian Kernel. [PDF]

Sci Rep, 2023
Manatees are aquatic mammals with voracious appetites. They rely on sea grass as the main food source, and often spend up to eight hours a day grazing. They move slow and frequently stay in groups (i.e.
Wang Z, Pang Y, Ulus C, Zhu X.
europepmc   +3 more sources

Vocalizations of wild West Indian manatee vary across subspecies and geographic location. [PDF]

Sci Rep, 2023
Geographic variation in the vocal behavior of manatees has been reported but is largely unexplored. Vocalizations of wild West Indian manatees ( Trichechus manatus ) were recorded with hydrophones in Florida from Florida manatees ( Trichechus manatus ...
Reyes-Arias JD, Brady B, Ramos EA, Henaut Y, Castelblanco-Martínez DN, Maust-Mohl M, Searle L, Pérez-Lachaud G, Guzmán HM, Poveda H, Merchan F, Contreras K, Sanchez-Galan JE, Collom KA, Magnasco MO.   +14 more
europepmc   +2 more sources

Acoustic methods improve the detection of the endangered African manatee

Frontiers in Marine Science, 2023
The African manatee (Trichechus senegalensis) is an elusive, data-deficient, and endangered species which inhabits marine and freshwater systems throughout Western and Central Africa.
Clinton Factheu, A. Rycyk, S. Kekeunou, Lucy Keith-Diagne, E. Ramos, Mumi Kikuchi, Aristide Takoukam Kamla   +6 more
semanticscholar   +1 more source

Advances in the knowledge of the biology and conservation of the Amazonian manatee (Trichechus inunguis)

Latin American Journal of Aquatic Mammals, 2023
The last relevant work that reviewed the biological and conservation aspects of the Amazonian manatee (Trichechus inunguis) was published almost 30 years ago. In these three decades, scientific knowledge about the species has advanced substantially. This
Rodrigo Amaral, M. Marmontel, Diogo de Souza, Camila Ernanda Sousa de Carvalho, G. Valdevino, M. Guterres-Pazin, Daniela M D de Mello, D. Lima, Hilda Chávez-Pérez, Vera M. F. Da Silva   +9 more
semanticscholar   +1 more source

Antillean manatee calves in captive rehabilitation change vocal behavior in anticipation of feeding.

Zoo Biology, 2023
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.
E. Ramos, Beth A. Brady, J. A. Lasala, Angus Liebschner, S. Obbink, Zoe Walker, M. Rebello, M. Magnasco   +7 more
semanticscholar   +1 more source

The initial steps toward the formation of somatic tissue banks and cell cultures derived from captive Antillean manatee (Trichechus manatus manatus) skin biopsies.

Zoo Biology, 2023
The declining population of the Antillean manatee caused by ecosystem degradation and rising pollution has prompted interest in developing conservation strategies for this species.
M. B. Nascimento, Y. B. F. Moura, R. E. Oliveira, Gabriela P O Lira, A. A. Borges, F. Luna, Fernanda L. N. Attademo, A. F. Pereira   +7 more
semanticscholar   +1 more source

Anecdotal Accounts of Manatee Behavior: Conservation and Management, Behavioral Ecology, and Cognition

Aquatic Mammals, 2023
Herein, we report anecdotes of manatee (family Trichechidae) behavior based upon accounts made by experienced observers. We have categorized the anecdotes into the broad categories of Conservation and Management (interactions with boats, people, and ...
R. Reep, G. Bauer
semanticscholar   +1 more source

Cytochemical staining of leukocytes and platelets in the Florida manatee (Trichechus manatus latirostris): identification of a bilobed monocyte similar to other members of the Paenungulata

Frontiers in Veterinary Science, 2023
Manatees (Antillean-, Amazonian, and African-) and dugongs belong to the Order Sirenia, and when combined with elephants and rock hyraxes, form the Paenungulata. A bilobed mononuclear cell has previously been identified in elephants and rock hyraxes, but
L. Cagle, N. Stacy, J. Harvey, M. de Wit, Laurie Adler, M. Walsh, R. Bonde, T. Stokol   +7 more
semanticscholar   +1 more source