, 2013 Published as part of Oliveira, Marianna Isabella Rosa Rodrigues De, Weber, Luiz Norberto & Napoli, Marcelo Felgueiras, 2013, Internal oral morphology in larvae of the genus Rhinella Fitzinger, 1826 (Amphibia, Anura, Bufonidae), pp.
Oliveira, Marianna Isabella Rosa Rodrigues De +2 more
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Morphological and biochemical characterization of the cutaneous poison glands in toads (Rhinella marina group) from different environments [PDF]
Frontiers in Zoology, 2018 Background Amphibian defence against predators and microorganisms is directly related to cutaneous glands that produce a huge number of different toxins.
Pedro Luiz Mailho-Fontana +5 more
doaj +2 more sources
Morphological and histochemical studies of Bidder’s organ inRhinella schneideri(Amphibia: Anura) males [PDF]
Italian Journal of Zoology, 2015 AbstractBufonids have an organ that produces female germ cells in both sexes, known as the Bidder’s organ (BO). In males, BO is located in the anterior pole of the testis and it has been compared to a rudimentary ovary. It has been demonstrated that in some species the bidderian follicles can accumulate vitellogenin in males, while in other species ...
Silberschmidt Freitas, Juliane +2 more
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Differences and Similarities among Parotoid Macrogland Secretions in South American Toads: A Preliminary Biochemical Delineation [PDF]
The Scientific World Journal, Volume 2013, Issue 1, 2013., 2013 Amphibians are known by cutaneous glands, spread over the skin, containing toxins (proteins, peptides, biogenic amines, steroidal bufadienolides, and alkaloids) used as chemical defense against predators and microbial infection. Toads are characterized by the presence of parotoid macroglands.
Juliana Mozer Sciani +6 more
wiley +2 more sources
Biochemical and Biological Profile of Parotoid Secretion of the Amazonian Rhinella marina (Anura: Bufonidae) [PDF]
BioMed Research International, Volume 2019, Issue 1, 2019., 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.
Daniel S. S. de Medeiros +16 more
wiley +2 more sources
AVALIATION OF VENTILATORY PATTERN IN THE TOAD RHINELLA SCHNEIDERI (ANURA: BUFONIDAE) [PDF]
Nucleus Animalium, 2010 Os anfíbios ventilam seus pulmões por meio de bombeamento bucal, mecanismo que foi primeiramente descrito 1969 como um modelo para a respiração de anuros. Como os anfíbios não possuem alvéolos em seus pulmões, foi calculado para o sapo Rhinella schneideri a ventilação equivalente do pulmão por meio da equação VEFF = (VLCO2•RT)/PLCO2.
Fernandes, Marcelo Santos
core +4 more sources
Bufalin‐Induced Epithelial‐to‐Mesenchymal Transition in Kidney Epithelial Cells [PDF]
Cell Biology International, Volume 49, Issue 12, Page 1764-1786, December 2025.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
Gabriela Morais de Oliveira Barros +3 more
wiley +2 more sources
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 +1 more source
Hybridization and massive mtDNA unidirectional introgression between the closely related Neotropical toads
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 +6 more
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Presynaptic effect of a methanolic extract of toad (Rhinella schneideri) poison in avian neuromuscular preparation. [PDF]
Journal of venom research, 2011 The neurotoxicity of a methanolic extract of toad (Rhinella schneideri) poison was examined in chick biventer cervicis preparations. The methanolic extract (1, 3, 10 and 30µg/ml) caused concentration-dependent blockade at the three highest concentrations (time for 50% blockade, mean±SEM: 84±10, 51±3 and 12±0.8min for 3, 10 and 30µg/ml, respectively; n ...
Sandro, Rostelato-Ferreira +4 more
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