Results 131 to 140 of about 3,994 (152)

Circadian rhythm of motor activity of the Brazilian rock cavy (Kerodon rupestris) under artificial photoperiod

Biological Rhythm Research, 2006
Abstract Kerodon rupestris, a Brazilian caviidae rodent, lives in dry stony places. In a first experiment, seven animals were kept in LD (250:0 lux and 400:0 lux) during 40 days in each condition. In the second, four animals were kept in LD (470 lux: red dim light) for 47 days, then in LL (470 lux) for 18 days and in DD (red dim light) for 23 days ...
Alexandre A L Menezes
exaly   +3 more sources

Distribution of nitric oxide in the rock cavy (Kerodon rupestris) brain II: The brainstem.

Journal of Chemical Neuroanatomy, 2021
In a recent paper, we described the distribution of Nitric oxide (NO) in the diencephalon of the rock cavy (Kerodon rupestris). This present paper follows this work, showing the distribution of NO synthesizing neurons in the rock cavy's brainstem. For this, we used immunohistochemistry against the neuronal form of nitric oxide synthase (NOS) and NADPH ...
Lucimário Thiago Félix de Araújo, Maria Emanuela Martins Dos Reis, Wylqui Mikael Gomes de Andrade, Nayra da Silva Resende, R. M. D. de Lima, E. S. do Nascimento, Miriam Stela Maris de Oliveira Costa, J. C. Cavalcante   +7 more
semanticscholar   +3 more sources

Bearded capuchin (Sapajus libidinosus) predation on a rock cavy (Kerodon rupestris) followed by prey sharing

Primates, 2021
We describe predation on an adult rodent rock cavy and sharing of the carcass by a group of male bearded capuchins. Despite many studies, such an interaction has never been observed in bearded capuchins. Rock cavies are large rodents weighing around 25% of the weight of an adult male bearded capuchin.
Robério Freire Filho, Sanjay Veiga, B. Bezerra   +2 more
semanticscholar   +3 more sources

Morphological tools to evaluate the digestory apparatus in rocky cavy (Kerodon rupestris)

Microscopy Research and Technique, 2019
This research describes for the first time the complete morphology of the digestive apparatus of rock cavies. Dissection, light microscopy, and scanning electron microscopy were performed.
Marian Mazeto de Aro, Amilton Cesar Dos Santos, Erick Eduardo da Silveira, Antônio Francisco da Silva Lisboa Neto, M. F. de Oliveira, Antônio Chaves de Assis Neto   +5 more
semanticscholar   +3 more sources

Distribution of nitric oxide synthase in the rock cavy (Kerodon rupestris) brain I: The diencephalon.

Brain Research, 2018
Nitric oxide (NO) is a highly soluble and membrane-permeable neurotransmitter, so it does not need to be packed in vesicles or have a membrane receptor. In the nervous system, NO is synthesized by the neuronal form of the nitric oxide synthase (NOS) enzyme and has been considered as a local neurotransmitter.
Maria Emanuela Martins dos Reis, L. T. Araújo, Wylqui Mikael Gomes de Andrade, N. S. Resende, Ruthnaldo R. M. Lima, E. S. Nascimento, Miriam S M O Costa, J. C. Cavalcante   +7 more
semanticscholar   +3 more sources

Nuclear organization of the serotonergic system in the brain of the rock cavy (Kerodon rupestris).

Journal of Chemical Neuroanatomy, 2012
Serotonin, or 5-hydroxytryptamine (5-HT), is a substance found in many tissues of the body, including as a neurotransmitter in the nervous system, where it can exert different post-synaptic actions. Inside the neuro-axis, 5-HT neurons are almost entirely restricted to the raphe nuclei of the brainstem. As such, 5-HT-immunoreactivity has been considered
J. G. Soares, J. Cavalcanti, F. G. Oliveira, A. Pontes, Twyla B. Sousa, L. M. Freitas, Jeferson S Cavalcante, E. S. Nascimento, J. C. Cavalcante, Miriam S M O Costa   +9 more
semanticscholar   +3 more sources

Retinal projections into the Zona Incerta of the rock cavy (Kerodon rupestris): a CTb study.

Neuroscience Research, 2014
The Zona Incerta is a key neural substrate of higher brain functions. A neural population in the caudal ZI projects into the superior colliculus. This recently has been identified as an important structure for the saccades. Applying CTb, we describe a retinal projection into the caudal ZI and the distribution of its terminal varicosities in the rock ...
Paulo Leonardo Araújo de Góis Morais, Melquisedec Abiaré Dantas de Santana, J. C. Cavalcante, Miriam Stela Maris de Oliveira Costa, Jeferson Sousa Cavalcante, E. S. do Nascimento   +5 more
semanticscholar   +3 more sources

Placentation in the rock cavy, Kerodon rupestris (Wied).

Placenta, 2006
Rock cavies are rodents found in the semi-arid caatinga of Brazil. We studied the structure of the rock cavy placenta by light and transmission electron microscopy. The exchange area of the labyrinth was organized in lobes separated by interlobular areas. The interhaemal barrier was syncytial haemomonochorial.
Moacir Franco de Oliveira, Anthony M. Carter, Marina Bonatelli, Carlos Eduardo Ambrósio, M. Miglino   +4 more
semanticscholar   +5 more sources

The reproductive biology of the rock cavy, Kerodon rupestris, in captivity: A study of reproductive adaptation in a trophic specialist

Mammalia, 1984
M. Roberts, E. Maliniak, M. Deal
exaly   +3 more sources

Nuclear organization and morphology of cholinergic neurons in the brain of the rock cavy (Kerodon rupestris) (Wied, 1820).

Journal of Chemical Neuroanatomy, 2018
The aim of this study was to conduct cytoarchitectonic studies and choline acetyltransferase (ChAT) immunohistochemical analysis to delimit the cholinergic groups in the encephalon of the rock cavy (Kerodon rupestris), a crepuscular Caviidae rodent ...
N. Resende, P. L. S. Filho, P.P.A. Peixoto, Alane de Medeiros Silva, Sebastião F. Silva, J. G. Soares, E. S. D. Nascimento, J. C. Cavalcante, Jeferson S Cavalcante, Miriam S M O Costa   +9 more
semanticscholar   +3 more sources