Size, not phylogeny, explains the morphology of the endosseous labyrinth in the crown clade Crocodylia. [PDF]
J AnatHere, 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 +9 more
europepmc +2 more sources
Ontogenetic variability of the intertympanic sinus distinguishes lineages within Crocodylia. [PDF]
J Anat, 2023 We recognised the usefulness of the paratympanic sinuses in distinguishing major lineages within Crocodylia. 3D geometric morphometric approaches allow us to quantify the ontogeny and variability of the intertympanic sinus within one of the largest dataset of modern species, including one of the largest specimens ever scanned at such a high resolution.
Perrichon G +10 more
europepmc +2 more sources
Clustering crocodylian dental morphology: Insights into functional adaptations, diet, and ontogeny. [PDF]
J AnatExtant 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.
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How many fathers? Study design implications when inferring multiple paternity in crocodilians. [PDF]
Ecol Evol, 2022 Up to ten males have been reported to sire clutches of crocodilian eggs but review of the underlying study designs raised questions of potential upward bias of inferred sire numbers. Using a known dataset from 1:1 male:female matings, an impossible 7 sires were inferred by limiting the genotypic information using a particular statistical package ...
Isberg SR.
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 AnatLiving 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 +5 more
europepmc +2 more sources
Trifold origin of the reptilian ear ossicle and its relation to the evolutionary modification of the temporal skull region. [PDF]
J AnatThe 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.
Werneburg I, Bronzati M.
europepmc +2 more sources
Analyzing the Life History of Caimans: The Growth Dynamics of Caiman latirostris From an Osteohistological Approach. [PDF]
J MorpholThis research offers insights into the life history and growth dynamics of Caiman latirostris, highlighting their growth patterns, aging, and attainment of sexual maturity, and how environmental conditions impact their development. This study has direct implications for understanding the life histories of extinct archosaurs and other sauropsids ...
Pereyra ME +3 more
europepmc +2 more sources
Assessing abundance-suitability models to prioritize conservation areas for the dwarf caimans in South America. [PDF]
Ecol EvolThis study identified conservation priorities for the South American dwarf caimans (Paleosuchus palpebrosus and P. trigonatus) relying on robust species distribution and abundance models. We support that environmental suitability and spatial abundance are not always congruent and cannot be considered reliable surrogates for one another, and ...
Rodriguez-Cordero AL +4 more
europepmc +2 more sources
Anatomo-Histological Evaluation of Male Reproductive System of the Juvenile Caiman crocodilus yacare [PDF]
International Journal of Morphology, 2021 The Caiman crocodilus yacare was once close to extinction. Studies about the male reproductive tract may aid in their reproduction and conservation. In this work, after sedation and euthanasia, seven young male C. yacare were submitted to necropsy, and macroscopic evaluation of the reproductive system, while the three others were admitted for ...
Takamine, Cristiane Naoko +5 more
openaire +2 more sources
Processamento da carne do jacaré do pantanal (Caiman crocodilus yacare) [PDF]
Ciência e Tecnologia de Alimentos, 2002 This study considers different ways of processing alligator swampland meat as an alternative of consumption in a non conventional way for that species. It also evaluates the utilization of the meat coming from parts normally discarded such as muscle of the trunk and membranes.
Romanelli, Pedro Fernando +2 more
openaire +4 more sources