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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Vocal and territorial behavior in the Smith frog (Hypsiboas faber): Relationships with plasma levels of corticosterone and testosterone

Full text
Author(s):
de Assis, Vania Regina [1] ; Navas, Carlos Arturo [1] ; Mendonca, Mary T. [2] ; Gomes, Fernando Ribeiro [1]
Total Authors: 4
Affiliation:
[1] Univ Sao Paulo, Inst Biociencias, Dept Fisiol, BR-05508900 Sao Paulo - Brazil
[2] Auburn Univ, Dept Biol Sci, Auburn, AL 36849 - USA
Total Affiliations: 2
Document type: Journal article
Source: COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY A-MOLECULAR & INTEGRATIVE PHYSIOLOGY; v. 163, n. 3-4, p. 265-271, NOV 2012.
Web of Science Citations: 16
Abstract

The possible trade-off between the roles of glucocorticoids as facilitators of energy substrate mobilization and neural inhibitors of sexual behavior during breeding season is under debate. We studied the relationship between calling and territorial behavior with plasma levels of corticosterone (CORT) and plasma levels of testosterone (T) across the breeding season of Hypsiboas faber, a large and territorial Neotropical treefrog. We investigated these relationships through focal observations of males calling naturally, followed by blood sampling for hormonal radioimmunoassay. We additionally used an experimental approach, which consisted of broadcasting recorded advertisement calls for 10 min to simulate an invasion in the territory of the focal subjects, followed by behavioral observation and blood sampling for hormonal radioimmunoassay. Results showed a pattern of co-variation between CORT and T across the breeding season. Furthermore, individual variation in CORT and T was related to different aspects of behavior: individuals with higher CORT showed higher calling rates, and individuals with higher steroid levels, mainly T, showed higher responsivity to social stimulation by other males in the chorus. Experimental simulation of territorial intrusion by using playback of advertisement calls of this species did not elicit consistent changes in agonistic behavior and CORT, but decreased T in focal males. (C) 2012 Elsevier Inc. All rights reserved. (AU)

FAPESP's process: 06/06276-4 - Study of the relationship between corticosterone levels and territorial and vocal behavior of the gladiator frog (Hypsiboas faber)
Grantee:Vania Regina de Assis
Support Opportunities: Scholarships in Brazil - Scientific Initiation
FAPESP's process: 07/05972-0 - RELATION BETWEEN PLASMATIC LEVELS OF THE HORMONES CORTICOSTERONE AND TESTOSTERONE IN THE TERRITORIAL, VOCAL BEHAVIOR AND CONSTRUCTION OF NEST IN THE FROG HAMMER (Hypsiboas faber).
Grantee:Vania Regina de Assis
Support Opportunities: Scholarships in Brazil - Master
FAPESP's process: 03/01577-8 - Causes and correlations of physiological variation: role of environmental and behavioral gradients at different levels of organization
Grantee:Carlos Arturo Navas Iannini
Support Opportunities: Research Projects - Thematic Grants