Results 51 to 60 of about 4,111 (235)

Hemogregarine Diversity Infecting Brazilian Turtles with a Description of Six New Species of Haemogregarina (Apicomplexa: Adeleorina: Haemogregarinidae)

open access: yesDiversity, 2023
(1) Background: Hemoparasites of the genus Haemogregarina (Haemogregarinidae) are commonly reported in freshwater turtles. However, in Brazil, only three species have currently been characterised using molecular methods.
Letícia Pereira Úngari   +3 more
doaj   +1 more source

Phylogeny, biogeography and diversification patterns of side-necked turtles (Testudines: Pleurodira) [PDF]

open access: yes, 2018
Pleurodires or side-necked turtles are today restricted to freshwater environments of South America, Africa– Madagascar and Australia, but in the past they were distributed much more broadly, being found also on Eurasia, India and North America, and ...
Assine ML   +17 more
core   +2 more sources

Parasitic macrofauna of Podocnemis unifilis from the Tocantins and Javaés Rivers, Eastern Amazon, Brazil

open access: yesPesquisa Veterinária Brasileira, 2023
: The parasitic fauna of Podocnemididae species is of great relevance to understanding the ecological relationships of the organisms in this genus. The parasites can have a symbiotic relationship with their hosts; however, environmental imbalances may ...
A. B. Ribeiro   +6 more
semanticscholar   +1 more source

Pharmacological restraint of captivity giant Amazonian turtle Podocnemis expansa (Testudines, Podocnemididae) with xylazine and propofol Contenção farmacológica de tartaruga da Amazônia Podocnemis expansa (Testudines, Podocnemididae) de cativeiro com xilazina e propofol

open access: yesActa Cirúrgica Brasileira, 2008
PURPOSE: Identify a technique to induce brief sedation and hypnosis in Podocnemis expansa. METHODS: Twenty commercially bred P. expansa, weighing on average 1.2 ± 0.24 kg, were subjected to two protocols: G1 was given 1.5 mg/kg IM of xylazine and ...
André Luiz Quagliatto Santos   +5 more
doaj   +1 more source

Isotopic ordering in eggshells reflects body temperatures and suggests differing thermophysiology in two Cretaceous dinosaurs [PDF]

open access: yes, 2015
Our understanding of the evolutionary transitions leading to the modern endothermic state of birds and mammals is incomplete, partly because tools available to study the thermophysiology of extinct vertebrates are limited.
Cerling, Thure E.   +13 more
core   +3 more sources

Mosaic morphology in Podocnemididae revealed by a new turtle from the Middle Miocene La Venta Biome, Colombia

open access: yesPapers in Palaeontology, Volume 11, Issue 6, November/December 2025.
Abstract A new genus and species of podocnemidid turtle, Shakiremys colombiana, is described here from the Middle Miocene La Venta Biome, located in south‐central Colombia. The new taxon is represented by two specimens: one consisting of a complete skull and articulated shell, and the other of an articulated shell only.
Edwin‐Alberto Cadena   +4 more
wiley   +1 more source

Hemoparasite occurrence and hematological/serum chemistry variations in Podocnemis vogli turtles: A comparative analysis between wild-residing infected specimens and captive non-infected counterparts.

open access: yesVeterinary Parasitology: Regional Studies and Reports, 2023
Reptiles show a high occurrence of hemoparasites in the wild; however, little is known about the impact of such infections on their hosts' physiology and health status.
Jorge Apache   +4 more
semanticscholar   +1 more source

Serie normal del desarrollo organogénico embrionario de Podocnemis unifilistroschel, 1949 (testidinata, pelomedusinae)

open access: yesActa Biológica Colombiana, 1992
The histological and organogenical development of the turtle Podocnemis unifilis are presented. This study covers 28 chronological steps which were defined in a period of 95 days.
Nory Astrid Guzman Ballesteros   +1 more
doaj  

Estrutura populacional, tamanho e razão sexual de Podocnemis unifilis (Testudines, Podocnemididae) no rio Guaporé (RO), norte do Brasil [PDF]

open access: yesPhyllomedusa: Journal of Herpetology, 2004
Population structure, size and sex ratio in Podocnemis unifilis (Testudines, Podocnemididae) in the Guaporé river (RO), northern Brazil.Population structure and sex ratio of Podocnemis unifilis was studied from June to November 1989 and from March to ...
Augusto Fachín-Terán, Richard C. Vogt
doaj  

Eimeria species (Apicomplexa: Eimeriidae) of podocnemis expansa (Schweigger) and geochelone denticulata (LINN.) from Amazonian Brazil (Reptilia: Chelonia)

open access: yesMemorias do Instituto Oswaldo Cruz, 1990
Eimeria lagunculata, Eimeria mammiformis and Eimeria podocnemis n. spp., are described from the faeces of the fresh-water turtle Podocnemis expansa, in Pará State, north Brasil. Oocysts of E.
Ralph Lainson   +2 more
doaj   +1 more source

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