Results 11 to 20 of about 829 (158)

Ultrasonographic Ocular Biometry of the Greater Caribbean Manatee (Trichechus manatus manatus). [PDF]

Vet Ophthalmol
ABSTRACT This study aimed to characterize the ocular biometry of the Trichechus manatus manatus applying B‐mode ultrasonography across different age groups. Twenty‐two animals were assessed employing a portable ultrasound device equipped with a linear transducer. Five ocular parameters were assessed: corneal thickness (CT), anterior chamber depth (ACD),
de Oliveira REM, Attademo FLN, Oliveira RKM, Dos Santos RP, de Oliveira Luna F, Mignucci-Giannoni AA, Cabrias-Contreras LJ, de Sá FB, Silva FJL, Freire ACDB, de Oliveira MF.   +10 more
europepmc   +4 more sources

Bioacoustic Classification of Antillean Manatee Vocalization Spectrograms Using Deep Convolutional Neural Networks

Applied Sciences, 2020
We evaluated the potential of using convolutional neural networks in classifying spectrograms of Antillean manatee (Trichechus manatus manatus) vocalizations. Spectrograms using binary, linear and logarithmic amplitude formats were considered.
Fernando Merchan, Ariel Guerra, Héctor Poveda, Héctor M. Guzmán, Javier E. Sanchez-Galan   +4 more
doaj   +7 more sources

Learning capacities and welfare in an Antillean manatee, Trichechus manatus manatus [PDF]

Comptes Rendus Biologies, 2020
Studies on the cognitive abilities of manatees are limited despite their importance for the environmental enrichment and welfare of individuals in captivity and the understanding of manatee behaviour in the wild.
Hénaut, Yann, Lara-Sánchez, Lizbeth Esmeralda, Morales-Vela, Benjamín, Machkour-M’Rabet, Salima   +3 more
doaj   +2 more sources

First Non-Invasive Monitoring of Fecal Steroids in Greater Caribbean Manatees (Trichechus manatus manatus). [PDF]

Zoo Biol
This study established the first fecal hormonal reference values (P4/E2) for the Greater Caribbean manatee. Using non‐invasive ELISA, the authors found no significant differences between mature and immature females, highlighting that long‐term monitoring and ultrasounds are essential to fully understand their complex reproductive cycles.
Bermúdez-Cardona V, Sánchez-Okrucky R, Sandoval-Zárate JA, Castelblanco-Martínez N.   +3 more
europepmc   +2 more sources

Capture and utilization of the Antillean manatee (Trichechus manatus manatus) on the northern Brazilian coast [PDF]

Biotemas, 2008
The Antillean manatee (Trichechus manatus manatus) is now considered to be the most endangered aquatic mammal of Brazil. During 1992 and 1993, we surveyed 3000km of the coastal area of the Maranhão (MA), Pará (PA) and Amapá (AP) states where we visited ...
Marisol Menezes Pessanha, Ricardo José Soavinski, Régis Pinto de Lima, Fábia de Oliveira Luna, Janaina Pauline de Araújo, José Zanon de Oliveira Passavante   +5 more
doaj   +1 more source

First Description of a Satellite DNA in Manatees’ Centromeric Regions

Frontiers in Genetics, 2021
Trichechus manatus and Trichechus inunguis are the two Sirenia species that occur in the Americas. Despite their increasing extinction risk, many aspects of their biology remain understudied, including the repetitive DNA fraction of their genomes.
Mirela Pelizaro Valeri, Guilherme Borges Dias, Alice Alves do Espírito Santo, Camila Nascimento Moreira, Yatiyo Yonenaga-Yassuda, Iara Braga Sommer, Gustavo C. S. Kuhn, Marta Svartman   +7 more
doaj   +1 more source

Programa de solturas de peixes-bois-marinhos

Biodiversidade Brasileira, 2023
Planos de ação nacional para a conservação das espécies ameaçadas de extinção são instrumentos de gestão que priorizam ações para a conservação da biodiversidade, em especial espécies ameaçadas de extinção. O peixe-boi-marinho Trichechus manatus manatus
Leandro Lazzari Ciotti, Fernanda Löffler Niemeyer Attademo , Alexandra Fernandes Costa, Salvatore Siciliano, Iran Campelo Normande, João Carlos Gomes Borges, Ernesto Frederico da Costa Foppel, Fábio Adônis Gouveia Carneiro da Cunha, Thalma Maria Grisi Veloso, Fábia de Oliveira Luna   +9 more
doaj   +1 more source

Karyotypical Confirmation of Natural Hybridization between Two Manatee Species, Trichechus manatus and Trichechus inunguis

Life, 2022
Two species of manatees are found in Northern Brazil—the Antillean manatee (Trichechus manatus), which is found along the coast from Florida to Northeastern Brazil, and the Amazonian manatee (Trichechus inunguis), endemic to the Amazon drainage basin ...
Edivaldo H. C. de Oliveira, Anderson J. B. Gomes, Alexandra F. Costa, Renata Emin-Lima, Cibele R. Bonvicino, Maria C. Viana, Laura M. A. Reis, Marcelo D. Vidal, Mirella V. G. Cavalcanti, Fernanda L. N. Attademo, Fábia O. Luna, Salvatore Siciliano   +11 more
doaj   +1 more source

Neonatal Abandonment and Hydrocephalus in Antillean Manatees (Trichechus manatus manatus): Is There a Causal Relationship? [PDF]

Animals (Basel)
Manatees are semi-social animals, with the mother–calf relationship being considered long-lasting for the species. However, some events lead to the separation of this pair. Orphaned manatee calves can be adopted by other females of the same species. However, if this does not happen and a healthy calf strand is rescued, immediate release represents the ...
Santos TFS, Moura MAO, Tavares GSF, Siqueira JS, Sarmento NMFP, Prado RGS, Costa AF, Amaral TMMM, Emin-Lima R, Sousa MEM, Moreira Júnior RHM, Bezerra Júnior PS, Riet-Correa G, Cerqueira VD.   +13 more
europepmc   +4 more sources

The evolutionary history of manatees told by their mitogenomes

Scientific Reports, 2021
The manatee family encompasses three extant congeneric species: Trichechus senegalensis (African manatee), T. inunguis (Amazonian manatee), and T. manatus (West Indian manatee).
Érica Martinha Silva de Souza, Lucas Freitas, Elisa Karen da Silva Ramos, Giovanna Selleghin-Veiga, Michelle Carneiro Rachid-Ribeiro, Felipe André Silva, Miriam Marmontel, Fabrício Rodrigues dos Santos, Anne Laudisoit, Erik Verheyen, Daryl P. Domning, Mariana Freitas Nery   +11 more
doaj   +1 more source