Results 61 to 70 of about 783 (132)

Positive Selection of TLR2 and MyD88 Genes Provides Insights Into the Molecular Basis of Immunological Adaptation in Amphibians

Ecology and Evolution, Volume 14, Issue 12, December 2024.
We found that recurrent positive selection has acted on TLR2 and MyD88 in amphibians and positively selected sites were mainly located at or close to function domains. Our results suggest that amphibians have adapted to different pathogenic microorganisms during their transition from the aquatic to terrestrial environment and diversification into ...
Jie Zhang, Ruinan Zhao, Hongyan Bi, Jiaoying He, Yang Guo, Dian Liu, Ganggang Yang, Xiaohong Chen, Zhuo Chen   +8 more
wiley   +1 more source

Kidneys and adrenal glands of Caiman yacare (Daudin, 1802) (Crocodylia: Alligatoridae): morphology and morphometry [PDF]

Anais da Academia Brasileira de Ciências
Crocodilians are semi-aquatic reptiles with highly sophisticated anatomy and physiology that are well adapted to dwell in freshwater environments or be exposed to brackish and saltwater, indicating the complex nature of the organization and function of ...
MARIANA O. LIMA, LEONARDO L. GORZA, EDUARDO JOSÉ S. BORGES, YHURI C. NÓBREGA, LEONARDO O. TRIVILIN, RODRIGO G. FIGUEIREDO, MARIA APARECIDA DA SILVA   +6 more
doaj   +1 more source

Assessing abundance–suitability models to prioritize conservation areas for the dwarf caimans in South America

Ecology and Evolution, Volume 14, Issue 9, September 2024.
This 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 ...
Andrés L. Rodriguez‐Cordero, Sergio A. Balaguera‐Reina, Brandon A. Gross, Margaret Munn, Llewellyn D. Densmore III   +4 more
wiley   +1 more source

Figure 15. Histology underlying grossly smooth surface patterns. A in Growth and textural ageing in long bones of the American alligator Alligator mississippiensis (Crocodylia: Alligatoridae)

, 2007
Figure 15. Histology underlying grossly smooth surface patterns. A, slight surface undulations (arrows) associated grossly with shallow dimples (FWC 40854, femur section b). B, smooth surface underlain by zone of lamellar bone (FWC 40583, humerus section
Tumarkin-Deratzian, Allison R., Dodson, Peter, Vann, David R.   +2 more
core   +1 more source

Ontogenetic and interelemental study of appendicular bones of Caiman latirostris Daudin, 1802 sheds light on osteohistological variability in crocodylians

Journal of Morphology, Volume 285, Issue 4, April 2024.
This in‐depth investigation provides unprecedented insight into the kinds of bone tissues that Caiman latirostris deposits during growth. Microstructural variability is related to differences in the prevailing environment. Abstract The osteohistology of vertebrates provides a reliable source to deduce biological information, particularly regarding ...
María Eugenia Pereyra, Paula Bona, Pablo Siroski, Anusuya Chinsamy   +3 more
wiley   +1 more source

Extended mitogenomic phylogenetic analyses yield new insight into crocodylian evolution and their survival of the Cretaceous–Tertiary boundary

, 2007
caiman, Paleosuchus trigonatus, and Cuvier’s dwarf caiman, Paleosuchus palpebrosus, were sequenced and included in a mitogenomic phylogenetic study. The phylogenetic analyses, which included a total of ten crocodylian species, yielded strong support to a
Janke, Axel, Roos, Jonas, Aggarwal, Ramesh K   +2 more
core   +1 more source

Mitogenomic analyses place the gharial (Gavialis gangeticus) on the crocodile tree and provide Pre-K/T divergence times for most crocodilians

, 2005
Based on morphological analyses, extant members of the order Crocodylia are divided into three families, Alligatoridae, Crocodylidae, and Gavialidae. Gavialidae includes one species, the gharial, Gavialis gangeticus.
Gullberg, Anette,, Janke, Axel, Arnason, Ulfur, Hughes, S, Gullberg, Anette, Arnason, Ulfur,, Aggarwal, RK, Lund University.   +7 more
core   +1 more source

New data on the inner skull cavities of Diplocynodon tormis (Crocodylia, Diplocynodontinae) from the Duero Basin (Iberian Peninsula, Spain) [PDF]

Fossil Record
Inner skull cavities provide key characters to elucidate taxonomic, phylogenetic, and palaeobiological inferences in reptiles. Herein, an integral description of the extinct alligatoroid Diplocynodon tormis is presented based on its holotype, recovered ...
Alejandro Serrano-Martínez, Àngel H. Luján, Ángel García-Pérez, Josep Fortuny   +3 more
doaj   +3 more sources

Distribution of populations of broad-snouted caiman (Caiman latirostris, Daudin 1802, Alligatoridae) in the São Francisco River basin, Brazil Distribuição das populações de jacaré-do-papo-amarelo (Caiman latirostris, Daudin 1802, Alligatoridae) na bacia do Rio São Francisco, Brasil

Brazilian Journal of Biology, 2010
We surveyed populations of the broad-snouted caiman, Caiman latirostris, throughout the São Francisco River basin, from Três Marias reservoir, State of Minas Gerais, to the river delta, at the boarder of Sergipe and Alagoas states.
R. Filogonio, VB. Assis, LF. Passos, ME. Coutinho   +3 more
doaj   +1 more source

El tracto reproductivo de la hembra en Crocodylia: Estudio histológico y ultraestructural de Caiman crocodilus fuscus (Alligatoridae)

Acta Biológica Colombiana, 2002
The histologycal features of the female reproductive system of Caiman crocodilus fuscus are described in this review, inclidung aspects not previously described for other Crocodylia species.
Gloria Romero de Pérez, Martha Patricia Ramírez Pinilla   +1 more
doaj