Results 71 to 80 of about 488 (167)

Amphibians and Reptiles Exhibit Different Ecological and Evolutionary Spatial Patterns in the Amazon Basin

Ecology and Evolution, Volume 15, Issue 3, March 2025.
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 ...
Jhon Jairo López‐Rojas, Diego Henrique Santiago, Mirco Solé, Ricardo Lourenço‐de‐Moraes   +3 more
wiley   +1 more source

Histological and immunohistochemical study of the ovaries and oviducts of the juvenile female of Caiman latirostris (Crocodilia: Alligatoridae)

Zoologia (Curitiba), 2015
The purpose of this study was to examine the ovaries and the oviduct of juvenile females of the broad-snouted caiman, Caiman latirostris (Daudin, 1802), using light microscopy, histochemical and immunocytochemical techniques.
Clarice Machado-Santos, Lailah N. de S. Santana, Rosilene F. Vargas, Marcelo Abidu-Figueiredo, Lycia de Brito-Gitirana, Maurício A. Chagas   +5 more
doaj   +1 more source

Trifold origin of the reptilian ear ossicle and its relation to the evolutionary modification of the temporal skull region

Journal of Anatomy, Volume 246, Issue 3, Page 402-414, March 2025.
The columella‐complex in reptile middle ears involves the footplate, columella shaft, and extracolumella. The latter is partly of quadrate developmental origin, whereas the footplate derives from the mesodermal otic capsule, the shaft and another part of the extracolumella from the hyoid arch.
Ingmar Werneburg, Mario Bronzati
wiley   +1 more source

Oculocardiac Reflex and Autonomic Modulation in a Broad-Snouted Caiman (Caiman latirostris)

Acta Scientiae Veterinariae
Background: The oculocardiac reflex (OCR) is a neurophysiological response mediated by the vagus nerve, triggering changes in heart rate and rhythm in response to pressure applied to the ocular globe. While well-documented in humans and other mammals, the OCR remains less explored in reptiles, particularly crocodilians.
Ana Letícia Rodrigues Marques, Marina Marangoni, Vitor Eduardo Mamguê, Mel Takazono Lemes, Oscar Martínez, Paulo Henrique Braz, Tatiana Champion   +6 more
openaire   +2 more sources

Gharial acoustic signaling: Novel underwater pops are temporally based, context‐dependent, seasonally stable, male‐specific, and individually distinctive

Journal of Anatomy, Volume 246, Issue 3, Page 415-443, March 2025.
Male gharials (Gavialis gangeticus) produce loud underwater POPs by rapid jaw clapping 1–3×. POPs are temporally based, context‐dependent, seasonally stable, and individually distinctive. The bulbous, cartilaginous “ghara” atop the snout is a sexually dimorphic unique feature.
Jailabdeen Ajji M., Jeffrey W. Lang
wiley   +1 more source

Biomechanical modeling of musculoskeletal function related to the terrestrial locomotion of Riojasuchus tenuisceps (Archosauria: Ornithosuchidae)

The Anatomical Record, Volume 308, Issue 2, Page 369-393, February 2025.
Abstract Riojasuchus tenuisceps was a pseudosuchian archosaur from the Late Triassic period in Argentina. Like other ornithosuchids, it had unusual morphology such as a unique “crocodile‐reversed” ankle joint, a lesser trochanter as in dinosaurs and a few other archosaurs, robust vertebrae, and somewhat shortened, gracile forelimbs.
M. Belen von Baczko, Juned Zariwala, Sarah Elizabeth Ballentine, Julia B. Desojo, John R. Hutchinson   +4 more
wiley   +1 more source

Anatomical peculiarities of the broad-snouted caiman’s limb bones (Caiman latirostris)

, 2020
The aim of the study was the highlight of the specific characters of the limb bones in broad-snouted caiman, and for that, the investigations were conducted on the bones which were collected from a dead broad-snouted caiman that belonged to Bârlad Zoo.
Covașă, Costică-Toader, Munteanu, Alexandru   +1 more
core   +1 more source

Red fire ant (solenopsis invicta) effects on Broad-Snouted Caiman (Caiman latirostris) nest success [PDF]

, 2015
Flooding and predation are the two major causes for the decline in hatching rate and hatchling survival in crocodilian species. Recently, Solenopsis invicta (Red Fire Ant) has been recognized as a formidable invasive species, causing changes in wild ...
Piña, Carlos Ignacio, María Virginia Parachú Marcó, Alejandro Larriera, Carlos Ignacio Piña, Larriera, Alejandro, Parachu Marco, Maria Virginia   +5 more
core   +1 more source

Oxidative damage and antioxidant defense in Caiman latirostris (Broad-snouted caiman) exposed in ovo to pesticide formulations

Ecotoxicology and Environmental Safety, 2018
The surface used for agricultural production in Argentina significantly increased in recent years, mainly due to the expansion of soybean crops. As a result, the use of agrochemicals increased too. Many natural populations of Caiman latirostris (broad-snouted caiman) are affected by habitat fragmentation and the constant exposure to pesticides.
Burella, Pamela Mariana, Odetti, Lucia Magdalena, Simoniello, Maria Fernanda, Poletta, Gisela Laura   +3 more
openaire   +3 more sources

Organochlorine compound residues in the eggs of broad-snouted caimans (Caiman latirostris) and correlation with measures of reproductive performance

Chemosphere, 2011
Organochlorine compounds (OCCs), like pesticides (OCPs) and polychlorinated biphenyls (PCBs), are persistent lipophilic chemicals classified as endocrine-disruptors. Caiman latirostris inhabits wetlands throughout north-eastern Argentina and may accumulate OCCs. The aims of this study were to determine OCC residues in the eggs of C.
Stoker, Cora, Repetti, María Rosa, García, S.R., Zayas, Marcelo Alejandro, Galoppo, Germán Hugo, Beldoménico, H.R, Luque, Enrique Hugo, Muñoz de Toro, Monica Milagros   +7 more
openaire   +3 more sources