Results 11 to 20 of about 176 (108)

Thermal biology of the toadRhinella schneideriin a seminatural environment in southeastern Brazil [PDF]

Temperature, 2015
The toad, Rhinella schneideri, is a large-bodied anuran amphibian with a broad distribution over South America. R. schneideri is known to be active at night during the warm/rainy months and goes into estivation during the dry/cold months; however, there is no data on the range of body temperatures (Tb) experienced by this toad in the field, and how ...
Kenia Bicego, Denis Andrade, Luciane Gargaglioni   +2 more
exaly   +7 more sources

Analysis of the respiratory component of heart rate variability in the Cururu toad Rhinella schneideri [PDF]

Scientific Reports, 2017
AbstractBeat-to-beat variation in heart rate (fH) has been used as a tool for elucidating the balance between sympathetic and parasympathetic modulation of the heart. A portion of the temporal changes infHis evidenced by a respiratory influence (cardiorespiratory interaction) on heart rate variability (HRV) with heartbeats increasing and decreasing ...
Kenia Bicego, Lynn Hartzler, Lucas A Zena   +2 more
exaly   +7 more sources

Metacercariae of Renifer heterocoelium (Trematoda: Reniferidae) in tadpoles of Rhinella schneideri (Anura: Bufonidae) in Brazil

Revista Mexicana de Biodiversidad, 2012
Renifer heterocoelium is a parasite of the oral cavity of Neotropical snakes for which larval stages and the life cycle are still unknown. During studies of parasites of Rhinella schneideri, tadpoles collected in a lake from the municipality of Santa ...
Hudson Alves Pinto, Alan Lane de Melo
doaj   +3 more sources

Biochemical and Biological Profile of Parotoid Secretion of the Amazonian Rhinella marina (Anura: Bufonidae). [PDF]

Biomed Res Int, 2019
Skin secretions of frogs have a high chemical complexity. They have diverse types of biomolecules, such as proteins, peptides, biogenic amines, and alkaloids. These compounds protect amphibians’ skin against growth of bacteria, fungi, and protozoa and participate in defense system against attack from predators.
de Medeiros DSS, Rego TB, Dos Santos APA, Pontes AS, Moreira-Dill LS, Matos NB, Zuliani JP, Stábeli RG, Teles CBG, Soares AM, Sperotto ARM, Moura DJ, Saffi J, Caldeira CADS, Pimenta DC, Calderon LA.   +15 more
europepmc   +2 more sources

Patterns of parasitism by Amblyomma rotundatum (Ixodidae) on Rhinella schneideri (Bufonidae) in islands of São Francisco River, Minas Gerais, Brazil

Pesquisa Veterinaria Brasileira, 2015
: We sampled ticks from specimens of the rococo toad Rhinella schneideriby flannel dragging on two Islands located in the São Francisco River near the Três Marias hydroelectric dam, southeastern Brazil.
Helio Ricardo da Silva, Hermes Ribeiro Luz, João Luiz Faccini   +2 more
exaly   +3 more sources

Histologia da glândula parotoide de anuros da espécie Rhinella schneideri (Amphibia: Bufonidae)

Biotemas, 2015
O estudo histológico da glândula parotoide foi realizado utilizando 10 exemplares (machos e fêmeas) da espécie Rhinella schneideri, capturados manualmente em coletas noturnas no município de Bom Jesus, Piauí.
Juliana Costa Sousa, Regina Lucia dos Santos Silva, Richard Átila de Sousa, Mauro Sergio Cruz Souza Lima, Guilherme José Bolzani de Campos Ferreira   +4 more
doaj   +3 more sources

Bufalin-Induced Epithelial-to-Mesenchymal Transition in Kidney Epithelial Cells. [PDF]

Cell Biol Int
ABSTRACT The kidney plays a central role in fluid, electrolyte, and blood pressure regulation, processes tightly coupled to Na⁺/K⁺‐ATPase activity. Beyond its canonical transport function, Na⁺/K⁺‐ATPase also acts as a signaling receptor for cardiotonic steroids (CTSs) such as bufalin, which have been implicated in fibrosis and epithelial‐to‐mesenchymal
Barros GMO, Bagri KM, Mermelstein C, Quintas LEM.   +3 more
europepmc   +2 more sources

Hybridization and massive mtDNA unidirectional introgression between the closely related Neotropical toads Rhinella marina and R. schneideri inferred from mtDNA and nuclear markers [PDF]

BMC Evolutionary Biology, 2011
Background The classical perspective that interspecific hybridization in animals is rare has been changing due to a growing list of empirical examples showing the occurrence of gene flow between closely related species.
Schneider Horacio, Sampaio Iracilda, Bernardi José AR, Ferrand Nuno, Sodré Davidson, Sequeira Fernando, Vallinoto Marcelo   +6 more
doaj   +2 more sources

Enhancing Neuronal Networks with Rhinella schneideri Skin Secretion Molecules: Implications for Neurodegenerative Disorders

Toxins
Neurodegenerative disorders, including Parkinson’s and Alzheimer’s diseases, are hallmarked by the progressive degeneration of neuronal networks. Given the lack of disease-modifying cures, current therapies are limited to symptomatic relief.
Giovanna Arruda Caires, Isabela Souza Pereira, Carlos DeOcesano-Pereira, Daniel Carvalho Pimenta, Irina Kerkis, Juliana Mozer Sciani, Hugo Vigerelli   +6 more
doaj   +2 more sources

Histology of parotoid gland of Anuran species Rhinella schneideri (Amphibia: Bufonidae)

Biotemas, 2015
We performed histologic evaluation of the parotid glands of 10 (male and female) Rhinella schneideri. Animals were manually captured during nocturnal collections in Bom Jesus, Piauí, and euthanized by administering a lethal dose of anesthetic thiopental.
Juliana Costa Sousa, Regina Lúcia dos Santos Silva, Richard Átila de Sousa, Mauro Sergio Cruz Souza Lima, Guilherme José Bolzani de Campos Ferreira   +4 more
doaj   +1 more source