Results 51 to 60 of about 316 (161)

A review on activity patterns, reproduction, and feeding habits of Brazilian chelid turtles (Testudines, Chelidae)

open access: yesPhyllomedusa: Journal of Herpetology, 2004
The knowledge on natural history of some Brazilian chelonian species is still scarce what makes it difficult to ascertain ecological and evolutionary histories.
Franco L. Souza
doaj  

Generation length of the world's amphibians and reptiles

open access: yesEcography, Volume 2025, Issue 7, July 2025.
Variation in life histories influences demographic processes, from adaptive changes to population declines leading to extinction. Among life history traits, generation length offers a critical feature to forecast species' demographic trajectories such as population declines (widely used by the IUCN Red List) and adaptability to environmental change ...
Giordano Mancini   +8 more
wiley   +1 more source

Contribuciones al conocimiento sobre la Ecología y distribución geográfica de Phrynops (Batrachemys) Dahli; (Testudinata, Pleurodira, Chelidae) Contribuciones al conocimiento sobre la Ecología y distribución geográfica de Phrynops (Batrachemys) Dahli; (Testudinata, Pleurodira, Chelidae)

open access: yesCaldasia, 1966
1. Data on Ecology, Behavior and Geographical Distribution of the chelid turtle, Phrynops (Batrachemys) dahli, are reported. 2. The original habitat of the "carranchina" or "cabeza al lado" consisted in ponds and small brooks within the forests, a ...
Medem Federico
doaj  

Phallus eversion sexing in Phrynops geoffroanus (Testudines: Chelidae): a new non-invasive approach

open access: yesBrazilian Journal of Biology, 2021
The sexing of species is an important tool for population management. In tortoises and turtles, sexing is usually done according to secondary characteristics, such as plastron morphology or phallus eversion techniques.
M. S. C. S. Lima   +8 more
doaj   +1 more source

On the Australasian Chelidae (Chelodina)

open access: yes, 1969
(Uploaded by Plazi from the Biodiversity Heritage Library) No abstract provided.
openaire   +2 more sources

Sexing freshwater turtles: penile eversion in Phrynops tuberosus (Testudines: Chelidae)

open access: yesActa Herpetologica, 2014
Here, we described a noninvasive method for sexing freshwater turtles by stimulating penile eversion. We immobilized the neck and limbs of animals using fingers and, after some seconds, turtles everted their penis.
João Rodrigues   +2 more
doaj   +1 more source

A systematic comparative description of extant turtle humeri, with comments on humerus disparity and evolution based on fossil comparisons

open access: yesThe Anatomical Record, Volume 307, Issue 11, Page 3437-3505, November 2024.
Abstract The humerus is central for locomotion in turtles as quadrupedal animals. Osteological variation across testudine clades remains poorly documented. Here, we systematically describe the humerus anatomy for all major extant turtle clades based on 38 species representing the phylogenetic and ecological diversity of crown turtles.
Guilherme Hermanson   +3 more
wiley   +1 more source

A new species of Mesoclemmys, from the open formations of northeastern Brazil (Chelonii, Chelidae)

open access: yesPapéis Avulsos de Zoologia, 2005
A new species of South American side-necked turtle is described from the state of Piauí, Brazil. It is related to the Amazonian species of the genus Mesoclemmys s.l.
Roger Bour, Hussam Zaher
doaj   +1 more source

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