Results 81 to 90 of about 2,075 (189)

A new xinjiangchelyid turtle from the Middle Jurassic of Xinjiang, China and the evolution of the basipterygoid process in Mesozoic turtles [PDF]

open access: yes, 2013
Background: Most turtles from the Middle and Late Jurassic of Asia are referred to the newly defined clade Xinjiangchelyidae, a group of mostly shell-based, generalized, small to mid-sized aquatic froms that are widely considered to represent the stem ...
Ge, Sun   +4 more
core   +2 more sources

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

Population demography of an endangered lizard, the Blue Mountains Water Skink. [PDF]

open access: yes, 2013
BACKGROUND: Information on the age structure within populations of an endangered species can facilitate effective management. The Blue Mountains Water Skink (Eulamprus leuraensis) is a viviparous scincid lizard that is restricted to < 40 isolated ...
Chevalley, M.   +4 more
core   +2 more sources

Projected increases in the annual flood pulse of the Western Amazon [PDF]

open access: yes, 2015
The impact of a changing climate on the Amazon basin is a subject of intensive research because of its rich biodiversity and the significant role of rainforests in carbon cycling.
Buytaert, W.   +7 more
core   +1 more source

Rendimento e composição química de carcaça da tartaruga-da-Amazônia (Podocnemis expansa) em sistema comercial [PDF]

open access: gold, 2003
Vera Lúcia Ferreira Luz   +6 more
openalex   +1 more source

Jaw musculature during the dawn of turtle evolution [PDF]

open access: yes, 2018
Using a new approach to study muscle anatomy in vertebrates, the fully differentiated jaw musculature of 42 turtle species was studied and character mappings were performed. Soft tissue arrangements were correlated to the temporal openings (emarginations)
Werneburg, Ingmar
core  

A lengthy solution to the optimal propagule size problem in the large-bodied South American freshwater turtle, Podocnemis unifilis [PDF]

open access: yes, 2018
In oviparous vertebrates lacking parental care, resource allocation during reproduction is a major maternal effect that may enhance female fitness. In general, resource allocation strategies are expected to follow optimality models to solve the energy ...
Adams, Dean   +4 more
core   +2 more sources

Morfometria e histologia das gônadas de machos e fêmeas recém-eclodidos de Podocnemis expansa e Podocnemis unifilis (Testudines, Podocnemididae)=Morphometry and histology of the gonads of males and females hatchlings of Podocnemis expansa and Podocnemis. unifilis (Testudines, Podocnemididae)

open access: yesActa Scientiarum: Biological Sciences, 2012
Considerando a importância da técnica histológica na sexagem de quelônios e os poucos trabalhos direcionados para esta técnica, é proposto neste estudo caracterizar morfometricamente e histologicamente as gônadas de P. expansa e P. unifilis. Todos os espécimes utilizados neste trabalho foram procedentes do rio Javaés, entorno do Parque Nacional do ...
Adson Gomes de Ataídes   +4 more
openaire   +1 more source

Enterobacteria in free-living and captive Amazon turtles, Podocnemis expansa (Podocnemididae: Testudines)

open access: yes, 2018
The turtle Podocnemis expansa is an important wildlife species from the Amazon rainforest of Brazil. This also represents an important resource for coastal communities, as it has been historically consumed as food. Nevertheless, besides the sustainability issues, recent concerns have been raised over the health of the animals and possible impacts on ...
Meyer Junior, Julio Cesar   +4 more
openaire   +2 more sources

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