Results 31 to 40 of about 303 (146)
, 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
openaire +2 more sources
Cambios estructurales en el ovocito de Bufo arenarum durante la fecundación
Acta Zoológica Lilloana, 2022 Se describe la organización morfológica del ovocito maduro del sapo Bute arenarum. Se estudiaron algunos aspectos del proceso de activación, como la reacción pelicular, la emisión del segundo cuerpo polar, la rotación de orientación y la rotación de ...
Francisco D. Barbieri +1 more
doaj
Description of Morphological Abnormalities in Rhinella arenarum (ANURA: BUFONIDAE)
Journal of Morphological Sciences, 2018 AbstractThe rise of anatomical abnormalities in anurans over recent years has increased the interest in producing more and better information about the abnormalities observed in specimens within natural environments that are currently being altered. The aim of this work was to identify and describe la osseous abnormalities found in Rhinella arenarum ...
P.D. Chilote +3 more
openaire +1 more source
Differential toxicity and uptake of Diazinon on embryo-larval development of Rhinella arenarum
Chemosphere, 2014 Diazinon, an anti-cholinesterase organophosphate, is an extensively used pesticide. The main objective of this work was to assess the lethal and sublethal effects of Diazinon and its comparison with the uptake by embryos and larvae of the common South American toad Rhinella arenarum by means of standardized bioassays during acute (96 h), short-term ...
Aronzon, Carolina Mariel +3 more
openaire +3 more sources
Incentive or habit learning in amphibians?
PLoS ONE, 2011 Toads (Rhinella arenarum) received training with a novel incentive procedure involving access to solutions of different NaCl concentrations. In Experiment 1, instrumental behavior and weight variation data confirmed that such solutions yield incentive ...
Rubén N Muzio +5 more
doaj +1 more source
Activation of spleen tyrosine kinase (Syk) at fertilization in Rhinella arenarum eggs
The International Journal of Developmental Biology, 2014 Recently, we have provided evidence for the involvement of a cytosolic tyrosine-phosphorylatable 70 kDa oocyte protein in Rhinella arenarum (Anura: Bufonidae) fertilization. The aim of the present work was to characterize its phosphorylation, determine the identity of this protein and establish its biological role during the fertilization process ...
Mouguelar, Valeria Soraya +1 more
openaire +4 more sources
Mechanism of hCG-induced spermiation in the toad Rhinella arenarum (Amphibia, Anura)
General and Comparative Endocrinology, 2010 In Rhinella arenarum spermiation occurs as a consequence of LH/FSH increase during the amplexus or by a single dose of hCG, among other gonadotropins. The present study employs an in vitro system to study the mechanism of action of hCG in the spermiation of R. arenarum.
Volonteri, María Clara +1 more
openaire +3 more sources
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 +1 more source
Ecology and Evolution, Volume 7, Issue 21, Page 8950-8957, November 2017., 2017 Male and female cane toads differ in the distribution of toxin‐containing glands in different areas of the body. That divergence may reflect ecological and behavioral differences that have acted as selective forces on toxin‐gland location. Abstract The parotoid macroglands of bufonid anurans store (and can expel) large volumes of toxic secretions and ...
Wei Chen +3 more
wiley +1 more source
DiversitySpecies presence in urban landscapes is driven by complex biological and environmental interactions. In this study, we evaluated habitat and microhabitat selection by amphibians in urban environments using correspondence analysis, multiple correspondence
Rocio Pamela Demartín +2 more
doaj +1 more source