Results 41 to 50 of about 269 (143)

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

Pesquisa 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 ...
Ana Beatriz N. Ribeiro, Danilo N. Santana, Jonatas C. Souza, Marcos S.B. Oliveira, Marcela S. Magalhães, Adriana Malvasio, Kellen L.F. Silva   +6 more
doaj   +1 more source

Reproductive Allometry ofPodocnemis expansa(Testudines: Podocnemididae) in Southern Brazilian Amazon

Journal of Herpetology, 2013
Abstract Podocnemis expansa is the largest freshwater turtle in South America and exhibits a complex reproductive behavior. Females lay eggs in sandy banks formed during the dry season. Nesting habitat can influence hatching success and sex determination.
Costa Gonçalves Portelinha, Thiago, Malvásio, Adriana, Piña, Carlos Ignacio, Bertoluci, Jaime   +3 more
openaire   +2 more sources

The Erymnochelys group of turtles (Pleurodira, Podocnemididae) in the Eocene of Europe: New taxa and paleobiogeographical implications [PDF]

Palaeontologia Electronica, 2017
Pérez-García, Adán, Broin, France de Lapparent de, Murelaga, Xabier (2017): The Erymnochelys group of turtles (Pleurodira, Podocnemididae) in the Eocene of Europe: New taxa and paleobiogeographical implications.
Pérez-García, A, de Lapparent de Broin, F, Murelaga, X   +2 more
openaire   +3 more sources

Chromosome‐Level Genome Assemblies of Two Softshell Turtles with ZZ/ZW Provide Insights into TE‐Driven Recombination Suppression in Sex Chromosomes

Integrative Zoology, EarlyView.
This study presents the first genomic identification and characterization of ZW sex chromosomes in two soft‐shelled turtle species through genome assembly and resequencing. We reveal the structural organization of ZW chromosomes, identifying both pseudoautosomal regions (PARs) and differentiated regions.
Jianjun Liu, Zhiyuan Yang, Min Tang, Tingting Chen, Siqi Liu, Ziyao Meng, Xingjiang Bu, Xingquan Xia, Guang Yang, Liuwang Nie   +9 more
wiley   +1 more source

Climate, Continental Breakup and Habitat Shape Global Diversification and Biogeography of Turtles (Testudines)

Journal of Biogeography, Volume 53, Issue 7, July 2026.
ABSTRACT Aim Evaluate the relative contributions of palaeotemperature, palaeogeographic reconfiguration, and habitat heterogeneity to the diversification and biogeographic history of turtles (Order Testudines) from the Triassic to the present. Location and Time Period Global; Triassic–Recent.
Zhongning Zhao, Chad Keates, J. Paul Grobler, Phillip. A. Bester, Stephanus Riekert, Neil Heideman   +5 more
wiley   +1 more source

Population Structure ofPodocnemis expansa(Testudines: Podocnemididae) in Southern Brazilian Amazon

Copeia, 2014
Detailed studies of the population structure of most species of turtles in the Amazon Basin are lacking throughout their range. We estimated sex ratio, size structure, relative abundance, and recapture index for the Giant South American River Turtle (Podocnemis expansa) in Javaes River, southern Brazilian Amazon.
Costa Gonçalves Portelinha, Thiago, Malvásio, Adriana, Piña, Carlos Ignacio, Bertoluci, Jaime   +3 more
openaire   +2 more sources

Beyond mammals: the evolution of chewing and other forms of oropharyngeal food processing in vertebrates

Biological Reviews, Volume 101, Issue 3, Page 1406-1462, June 2026.
ABSTRACT Oropharyngeal food processing exhibits a remarkable diversity among vertebrates, reflecting the evolution of specialised ‘processing centres’ associated with the mandibular, hyoid, and branchial arches. Although studies have detailed various food‐processing strategies and mechanisms across vertebrates, a coherent and comprehensive terminology ...
Daniel Schwarz, Maja Mielke, Stephan Handschuh, Anthony Herrel, Patrick Lemell, Léa Da Cunha, Nicolai Konow   +6 more
wiley   +1 more source

Island‐restricted reptiles are more threatened but less studied than their mainland counterparts

Conservation Science and Practice, Volume 8, Issue 3, March 2026.
Reptiles are highly diverse on islands, yet there is no comprehensive overview of island‐restricted reptiles (IRRs) regarding their distribution, threat status, and research efforts. Our assessment revealed that despite IRRs comprising nearly a quarter of global reptile species and 30.8% being threatened, only 7.2% of the literature focuses on them ...
Sara F. Nunes, Kane Powell, Phoebe Griffith, Miguel A. Carretero, Rui Rebelo, Mar Cabeza, Ricardo Rocha   +6 more
wiley   +1 more source

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

Papers 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, David E. Leal‐Amaya, Andrés Vanegas‐Vanegas, Rubén D. Vanegas‐Vanegas, Lino J. E. Guevara‐Serrano   +4 more
wiley   +1 more source

Alimentación de Podocnemis Sextuberculata (Testudines: Podocnemididae) en la Reserva Mamirauá, Amazonas, Brasil

Revista Colombiana de Ciencia Animal Recia, 2014
La alimentación es uno de los aspectos más importantes en la vida de los organismos. En el grupo de los quelonios acuáticos amazónicos del género Podocnemis este aspecto es descuidado para P. sextuberculata. En este trabajo se presentan los resultados de
AUGUSTO FACHÍN-TERÁN, RICHARD CARL VOGT   +1 more
doaj   +1 more source