Results 21 to 30 of about 805 (182)
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
Bufo arenarum subsp. arenarum Hensel 1867
, 1992 Published as part of Klappenbach, Miguel A. & Langone, José A., 1992, LISTA SISTEMATICA Y SINONIMICA DE LOS ANFIBIOS DEL URUGUAY CON COMENTARIOS Y NOTAS SOBRE SU DISTRIBUCION, pp. 163-222 in Anales Del Museo Nacional De Historia Natural De Montevideo (2. a Serie) (2.
Klappenbach, Miguel A. +1 more
openaire +2 more sources
Protein‐Tyrosine Kinase Signaling in the Biological Functions Associated with Sperm
Journal of Signal Transduction, Volume 2012, Issue 1, 2012., 2012 In sexual reproduction, two gamete cells (i.e., egg and sperm) fuse (fertilization) to create a newborn with a genetic identity distinct from those of the parents. In the course of these developmental processes, a variety of signal transduction events occur simultaneously in each of the two gametes, as well as in the fertilized egg/zygote/early embryo.
Takashi W. Ijiri +3 more
wiley +1 more source
Graellsia, 2002 La posición taxonómica del sapo andino Bufo poeppigii ha sido objeto de controversia desde su descripción por Tschudi en el siglo XIX. Ello se ha debido a su parecido con Bufo marinus y a que ambas especies pueden encontrarse juntas en algunas ...
Ignacio De la Riva
doaj +1 more source
Determinants of instrumental extinction in terrestrial toads (Bufo arenarum)
Learning and Motivation, 2006 Abstract Previous research in a water-reinforced instrumental training situation with toads ( Bufo arenarum ) has shown that performance in both acquisition and extinction is poorer after partial, rather than continuous reinforcement training. In Experiment 1, the performance of a group receiving 24 trials on a 50% partial reinforcement schedule was ...
Rubén N. Muzio +2 more
openalex +4 more sources
Comportamiento en el desarrollo de todos los descendientes de una pareja de Bufo arenarum
Acta Zoológica Lilloana, 2022 La muestra observada consistió en 1443 renacuajos nacidos el 24 de septiembre de 1962 de una pareja de sapos. El 21,4 % de la población total se encontraba inhibido en su desarrollo.
N. Guiñazú
doaj
Phospholipid transfer activities in toad oocytes and developing embryos.
Journal of Lipid Research, 1986 The role of lipid transfer proteins during plasma membrane biogenesis was explored. Developing amphibia embryos were used because during their growth an active plasma membrane biosynthesis occurs together with negligible mitochondrial and endoplasmic ...
A Rusiñol, R A Salomón, B Bloj
doaj +1 more source
Acta Zoológica Lilloana, 2020 El efecto hidrosmótico de la epinefrina (E), vasopresina (VP) y angiotensina II (AT) se midió gravimétricamente en piel de sapo, no tratada y tratada con fentolamina o propranolol.
Susana Aranda de Zamudio +1 more
doaj
Hypophyseal Functions in the Toad Bufo Arenarum Hensel
The Quarterly Review of Biology, 1949 The study of the functions of the hypophysis of Bufo arenarum Hensel (and other batrachians) was started forty years ago in Argentina. This toad is perhaps the species in which the largest number of functions related to the hypophysis has been found and studied.
openaire +3 more sources
Antipredatory Strategies of Anurans: An Updated Conceptual Review
Ethology, Volume 132, Issue 9, Page 662-708, September 2026.To unravel the evolutionary dynamics of predator–prey interactions, we propose an updated, three‐tiered classification of anuran antipredatory strategies. By mapping non‐behavioral, individual, and group defenses across five functional phases, this integrative framework introduces the concept of synergetic coupling.
Ubiratã Ferreira Souza +3 more
wiley +1 more source