Results 1 to 10 of about 305 (101)

Revisiting the Karyotypes of Alligators and Caimans (Crocodylia, Alligatoridae) after a Half-Century Delay: Bridging the Gap in the Chromosomal Evolution of Reptiles [PDF]

Cells, 2021
Although crocodilians have attracted enormous attention in other research fields, from the cytogenetic point of view, this group remains understudied.
Vanessa C. S. Oliveira, Marie Altmanová, Patrik F. Viana, Tariq Ezaz, Luiz A. C. Bertollo, Petr Ráb, Thomas Liehr, Ahmed Al-Rikabi, Eliana Feldberg, Terumi Hatanaka, Sebastian Scholz, Alexander Meurer, Marcelo de Bello Cioffi   +12 more
doaj   +2 more sources

Structure and evolution of the embryonic cartilaginous skull of crocodilians [PDF]

Royal Society Open Science
The evolution of skull diversity in Crocodylia is rather well documented, but the developmental foundation of their cranial architecture remains poorly understood. Here, we present the first three-dimensional reconstruction of the embryonic cartilaginous
María Victoria Fernandez Blanco, Ingmar Werneburg   +1 more
doaj   +2 more sources

Morphological and molecular characterization of Brevimulticaecum sinensis sp. nov. (Nematoda: Ascaridoidea) from Alligator sinensis (Crocodilian: Alligatoridae) [PDF]

International Journal for Parasitology: Parasites and Wildlife
Brevimulticaecum sinensis sp. nov. is a novel species belonging to the genus Brevimulticaecum (Nematoda: Heterocheilidae). It was detected in the stomach of a carcass of a Chinese alligator (Alligator sinensis Fauvel, 1879; Crocodilian: Alligatoridae) at
Jinhong Zhao, Tellez Marisa, Yujun Shuai, Genjun Tu, Yongkang Zhou, Pingsi Yi, Zengxiang Xu, Armand Kuris, Xiaobing Wu   +8 more
doaj   +2 more sources

An extinct deep-snouted Alligator species from the Quaternary of Thailand and comments on the evolution of crushing dentition in alligatorids [PDF]

Scientific Reports, 2023
Fossil Alligator remains from Asia are critical for tracing the enigmatic evolutionary origin of the Chinese alligator, Alligator sinensis, the only living representative of Alligatoridae outside the New World. The Asian fossil record is extremely scarce
Gustavo Darlim, Kantapon Suraprasit, Yaowalak Chaimanee, Pannipa Tian, Chotima Yamee, Mana Rugbumrung, Adulwit Kaweera, Márton Rabi   +7 more
doaj   +2 more sources

Genetic Characterization of Caiman crocodilus (Crocodilia: Alligatoridae) on Gorgona Island, Colombia [PDF]

Biology
This study examines the genetic variation and structure of the spectacled caiman (Caiman crocodilus) on Gorgona Island, Colombia, compared to continental populations.
Natalia Londoño, Raúl Ernesto Sedano-Cruz, Alan Giraldo   +2 more
doaj   +2 more sources

Size, not phylogeny, explains the morphology of the endosseous labyrinth in the crown clade Crocodylia. [PDF]

J Anat
Here, we present the most complete dataset to date on the endosseous labyrinths of extant crocodylians. Using 3D geometric morphometrics, we show that allometry constitutes a major contributor of the shape variation of the crocodylian endosseous labyrinths and that the development of this structure is likely linked to the braincase conformation, in all
Pochat-Cottilloux Y, Perrichon G, Hautier L, Rinder N, Amiot R, Raselli I, Adrien J, Lachambre J, Fernandez V, Martin JE.   +9 more
europepmc   +2 more sources

Comparative endocranial anatomy in the crocodylians Leidyosuchus canadensis and Stangerochampsa mccabei from the upper Cretaceous of Alberta, Canada. [PDF]

J Anat
Leidyosuchus canadensis and Stangerochampsa mccabei share endocranial features such as posterior projection of a neurovascular canal in the maxilla and a paratympanic sinus system most similar to those of small‐bodied and young extant crocodylians, suggesting that these pedomorphic features may reflect the ancestral crocodylian condition.
Donzé G, Perrichon G, Vincent P, Therrien F, Martin JE.   +4 more
europepmc   +2 more sources

Agricultural input modifies trophic niche and basal energy source of a top predator across human-modified landscapes [PDF]

Frontiers in Ecology and Evolution, 2023
Land-use conversion and resulting habitat fragmentation can affect the source(s) of primary productivity that fuels food webs and alter their structure in ways that leads to biodiversity loss. We investigated the effects of landscape modification on food
André C. Pereira, André C. Pereira, Christy J. Mancuso, Seth D. Newsome, Gabriela B. Nardoto, Guarino R. Colli   +5 more
doaj   +2 more sources

Roars, Rumbles, and Resonance: A Systematic Review and Meta-Analysis of Crocodylian Acoustic Signals. [PDF]

Ecol Evol
Crocodylians are highly vocal reptiles, possessing a complex acoustic signalling system including vocal and non‐vocal signals used for courtship, mating, mediating conflict, and providing maternal care. Despite this, research on crocodylian acoustic signalling remains infrequent, with methodologies and terminology varying widely across studies.
Flores SA, Dwyer RG, Parsons S, Potvin DA.   +3 more
europepmc   +2 more sources

Amphibians and Reptiles Exhibit Different Ecological and Evolutionary Spatial Patterns in the Amazon Basin. [PDF]

Ecol Evol
This study investigates the spatial variability of ecological and evolutionary patterns in amphibian and reptile lineages within the Amazon Basin. Our findings highlight distinct diversity patterns across lineages and ecoregions. ABSTRACT Understanding spatial variability in ecological and evolutionary patterns is key to Amazonian biodiversity ...
López-Rojas JJ, Santiago DH, Solé M, Lourenço-de-Moraes R.   +3 more
europepmc   +2 more sources