Results 11 to 20 of about 3,006 (196)

Illegal trade of crocodylians in Colombia: Spatiotemporal dynamics and implications on conservation efforts

Conservation Science and Practice
Crocodylian conservation efforts have encountered significant obstacles from species overhunting to negative local perception. While conservation strategies such as sustainable use have helped the recovery of several crocodylian species around the world,
Edison D. Bonilla‐Liberato, Maria C. Ojeda‐Rojas, Venetia Briggs‐Gonzalez, Frank J. Mazzotti, Sergio A. Balaguera‐Reina   +4 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

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

Leucismo em jacaretinga: relato de caso [PDF]

Arquivo Brasileiro de Medicina Veterinária e Zootecnia, 2020
RESUMO Dentre os crocodilianos com ocorrência no Brasil, o Caiman crocodilus (Linnaeus, 1758) é a espécie de maior frequência, porém sua presença em estudos científicos restringe-se a levantamentos faunísticos, na maioria das vezes.
P.J.B. Silva, I.O. Farikoski, M.B. Souza, E.C.O Carmo, F.A. Souza, V.M.F. Ribeiro   +5 more
doaj   +2 more sources

The velar chord and dynamic integration of the gular valve in crocodylians. [PDF]

Anat Rec (Hoboken)
Crocodilians have a unique gular valve that forms a seal between the oral cavity and the pharynx. The gular valve has traditionally been treated as two parts: a mobile ventral flap associated with the tongue and a fixed dorsal velum palatini. This work describes a connective tissue band, the velar chord, which functionally integrates the two parts of ...
Young BA, Cramberg M, Young OG.
europepmc   +2 more sources

Evolution of growth strategy in alligators and caimans informed by osteohistology of the late Eocene early-diverging alligatoroid crocodylian Diplocynodon hantoniensis. [PDF]

J Anat
Living alligatoroids (alligators and caimans) share osteohistological features and display similar overall growth rates. However, it is unclear if these shared patterns are the result of convergent responses or reflect an ancestral condition. In this study, we histologically sampled nine femora of the fossil alligatoroid Diplocynodon hantoniensis to ...
Hoffman DK, Goldsmith ER, Houssaye A, Maidment SCR, Felice RN, Mannion PD.   +5 more
europepmc   +2 more sources

Clustering crocodylian dental morphology: Insights into functional adaptations, diet, and ontogeny. [PDF]

J Anat
Extant crocodylians may be divided into five clusters based on the residuals of four linear dental measurements (y‐axes) and their variation along the jaw (x‐axes). These clusters correlate to snout shape, prey preference, and feeding ecology, particularly prey size and the degree of processing necessary. Multiple families and subfamilies were found in
Testin JJ, D'Amore DC.
europepmc   +2 more sources

Ecological and Behavioral Implications of Multiple Paternity in the Smooth-Fronted Caiman in French Guiana. [PDF]

Ecol Evol
The smooth‐fronted caiman, Paleosuchus trigonatus, is one of the last species whose genetic mating system has yet to be investigated. In this study, we analyzed genetic samples of the smooth‐fronted caiman in French Guiana, a secretive species that is difficult to observe in the wild.
Dittrich C, Mangione R, Marquis O, Ringler E, Lemaire J.   +4 more
europepmc   +2 more sources

Looking for genetic effects of polluted anthropized environments on Caiman crocodilus crocodilus (Reptilia, Crocodylia): A comparative genotoxic and chromosomal analysis

Ecotoxicology and Environmental Safety, 2021
The Amazon aquatic ecosystems have been modified by the human population growth, going through changes in their water bodies and aquatic biota. The spectacled alligator (Caiman crocodilus crocodilus) has a wide distribution and adaptability to several ...
Vanessa Cristina Sales Oliveira, Patrik Ferreira Viana, Maria Claudia Gross, Eliana Feldberg, Ronis Da Silveira, Marcelo de Bello Cioffi, Luiz Antonio Carlos Bertollo, Carlos Henrique Schneider   +7 more
doaj   +1 more source

Variation in diet of hatchlings, juveniles and sub-adults of Caiman crocodilus chiapasius in La Encrucijada, Chiapas, Mexico

Revista Mexicana de Biodiversidad, 2020
Little is known about the diet of the Chiapas spectacled caiman, Caiman crocodilus chiapasius (Bocourt, 1876), in the southern coast of Mexico. Herein, we analyzed the stomach content of 44 caimans divided into 3 size classes in La Encrucijada, Chiapas,
Gerardo J. Soria-Ortiz, Pierre Charruau, Víctor Hugo Reynoso   +2 more
doaj   +1 more source