Results 1 to 10 of about 2,315 (137)

Morphological features of the nasal cavities of hawksbill, olive ridley, and black sea turtles: Comparative studies with green, loggerhead and leatherback sea turtles. [PDF]

open access: yesPLoS ONE, 2021
We analyzed the internal structure of the nasal cavities of hawksbill, olive ridley and black sea turtles from computed tomography images. The nasal cavities of all three species consisted of a vestibule, nasopharyngeal duct and cavum nasi proprium that ...
Chiyo Kitayama   +14 more
doaj   +2 more sources

Marine turtles are only minimally sexually size dimorphic, a pattern that is distinct from most nonmarine aquatic turtles [PDF]

open access: yesEcology and Evolution, 2022
Turtles have been prominent subjects of sexual size dimorphism (SSD) analyses due to their compact taxonomy, mating systems, and habitat diversity. In prior studies, marine turtles were grouped with fully aquatic non‐marine turtles (NMATs).
Christine Figgener   +2 more
doaj   +2 more sources

An ancestral hard-shelled sea turtle with a mosaic of soft skin and scutes [PDF]

open access: yesScientific Reports, 2022
The transition from terrestrial to marine environments by secondarily aquatic tetrapods necessitates a suite of adaptive changes associated with life in the sea, e.g., the scaleless skin in adult individuals of the extant leatherback turtle.
Randolph Glenn De La Garza   +10 more
doaj   +2 more sources

Heterochromatin and microsatellites detection in karyotypes of four sea turtle species: Interspecific chromosomal differences [PDF]

open access: yesGenetics and Molecular Biology, 2020
The wide variation in size and content of eukaryotic genomes is mainly attributed to the accumulation of repetitive DNA sequences, like microsatellites, which are tandemly repeated DNA sequences.
Caroline Regina Dias Machado   +6 more
doaj   +2 more sources

Some digenetic trematodes found in a loggerhead sea turtle (Caretta caretta) from Brazil [PDF]

open access: yesHelminthologia, 2021
This paper reports three recovered species of digeneans from an adult loggerhead sea turtle - Caretta caretta (Testudines, Cheloniidae) in Brazil. These trematodes include Diaschistorchis pandus (Pronocephalidae), Cymatocarpus solearis (Brachycoeliidae ...
Cavaco B.   +2 more
doaj   +2 more sources

Hematological profile of Chelonia mydas (Testudines, Cheloniidae) according to the severity of fibropapillomatosis or its absence Perfil hematológico de Chelonia mydas (Testudines, Cheloniidae) de acordo com o grau de acometimento pela fibropapilomatose e sua ausência [PDF]

open access: yesPesquisa Veterinária Brasileira, 2009
The green turtle Chelonia mydas feeds and nests in the Brazilian coastal area and is considered an endangered species by the World Conservation Union (IUCN 2009) and threatened by the Red List of Brazilian Fauna (Ministério do Meio Ambiente 2009 ...
Silmara Rossi   +5 more
doaj   +4 more sources

Prionochelys matutina Zangerl, 1953 (Testudines: Pan-Cheloniidae) from the Late Cretaceous of the United States and the evolution of epithecal ossifications in marine turtles [PDF]

open access: yesPeerJ, 2018
Background Many neritic to nearshore species of marine adapted turtle from the Late Cretaceous of North America are thought to represent the stem lineage of Cheloniidae but due to fragmentary holotypes, low total specimen counts, and resultantly ...
Andrew D. Gentry
doaj   +3 more sources

The first Oligocene sea turtle (Pan-Cheloniidae) record of South America [PDF]

open access: yesPeerJ, 2018
The evolution and occurrence of fossil sea turtles at the Pacific margin of South America is poorly known and restricted to Neogene (Miocene/Pliocene) findings from the Pisco Formation, Peru.
Edwin Cadena, Juan Abella, Maria Gregori
doaj   +3 more sources

Heart rate and cardiac response to exercise during voluntary dives in captive sea turtles (Cheloniidae) [PDF]

open access: yesBiology Open, 2020
In chelonids, oxygen is primarily stored in the lungs during a dive. Therefore, management of blood oxygen transportation to peripheral tissues by cardiovascular adjustments during submergence is crucial to maximize their dive duration, and consequently,
Junichi Okuyama   +2 more
doaj   +2 more sources

Creation of a peptide database of corneous beta-proteins of marine turtles for the identification of tortoiseshell: archaeological combs as case study [PDF]

open access: yesRoyal Society Open Science, 2021
Tortoiseshell is a proteinaceous material derived from the scutes of marine turtles, and was shaped into an abundance of objects, especially luxurious items, at its peak in the seventeenth and eighteenth century.
Caroline Solazzo   +2 more
doaj   +1 more source

Home - About - Disclaimer - Privacy