Results 11 to 20 of about 928 (195)

From teeth to pad: tooth loss and development of keratinous structures in sirenians [PDF]

open access: yesProceedings of the Royal Society B: Biological Sciences, 2023
International audienceThis contribution contains the 3D models described and figured in the following publication: Hautier L, Gomes Rodrigues H, Ferreira-Cardoso S, Emerling CA, Porcher M-L, Asher R, Portela Miguez R, Delsuc F.
Lionel Hautier   +2 more
exaly   +4 more sources

Drone photogrammetry reveals contrasting body conditions of dugongs across the Indo‐Pacific

open access: yesRemote Sensing in Ecology and Conservation
The monitoring of body condition, reflecting the state of individuals' energetic reserves, can provide early warning signals of population decline, facilitating prompt conservation actions.
Camille Goudalier   +16 more
doaj   +2 more sources

Elephants and Sirenians: A Comparative Review across Related Taxa in Regard to Learned Vocal Behavior

open access: yesComparative Cognition & Behavior Reviews, 2022
Vocal production learning is the ability to modify a vocal output in response to auditory experience. It is essential for human speech production and language acquisition. Vocal learning evolved independently several times in vertebrates, indicating evolutionary pressure in favor of this trait. This enables cross-species comparative analysis to be used
Anton Baotic   +3 more
doaj   +3 more sources

Cetacean loss of the master adipose tissue regulator β3-adrenergic receptor may underlie their thick blubber and an Oligocene radiation and dispersal [PDF]

open access: yesNature Communications
Blubber is a hydrostatic pressure-resistant and insulating vascularized layer of subcutaneous adipose tissue beneath the skin found in cetaceans, pinnipeds, and sirenians.
Ran Tian   +4 more
doaj   +2 more sources

Vulnerability of marine megafauna to global at-sea anthropogenic threats. [PDF]

open access: yesConserv Biol
Abstract Marine megafauna species are affected by a wide range of anthropogenic threats. To evaluate the risk of such threats, species’ vulnerability to each threat must first be determined. We build on the existing threats classification scheme and ranking system of the International Union for Conservation of Nature (IUCN) Red List of Threatened ...
VanCompernolle M   +312 more
europepmc   +2 more sources

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

open access: yesVet 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   +10 more
europepmc   +2 more sources

Salmonellosis in a young Amazonian manatee (Trichechus inunguis) [PDF]

open access: yesCiência Rural, 2020
: The objective of this study was to describe a case of salmonellosis in an Amazonian manatee (Trichechus inunguis). The animal was rescued from a tributary of the Capim River, in the municipality of Goianésia do Pará, Pará, Brazil, kept in a pool, and ...
José de Jesus Correa Neto   +8 more
doaj   +1 more source

Estimating the Abundance of Marine Mammal Populations

open access: yesFrontiers in Marine Science, 2021
Motivated by the need to estimate the abundance of marine mammal populations to inform conservation assessments, especially relating to fishery bycatch, this paper provides background on abundance estimation and reviews the various methods available for ...
Philip S. Hammond   +16 more
doaj   +1 more source

Life Expectancy in Marine Mammals Is Unrelated to Telomere Length but Is Associated With Body Size

open access: yesFrontiers in Genetics, 2021
Marine mammals vary greatly in size and lifespan across species. This study determined whether measures of adult body weight, length and relative telomere length were related to lifespan.
Kittisak Buddhachat   +8 more
doaj   +1 more source

Congenital Ocular Findings in an Antillean Manatee (Trichechus manatus manatus). [PDF]

open access: yesVet Med Sci
This study reports the first documented case of bilateral congenital cataract associated with retinal dysplasia in an Antillean manatee (Trichechus manatus manatus) calf. Ophthalmologic examination and ocular ultrasonography confirmed lens opacity at the posterior pole, which correlated with behavioural deficits consistent with visual impairment.
Attademo FLN   +7 more
europepmc   +2 more sources

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