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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.)

Cortisol influences the antipredator behavior induced by chemical alarm cues in the Frillfin goby

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Barreto, Rodrigo Egydio [1] ; Barbosa-Junior, Augusto [2] ; Urbinati, Elisabeth Criscuolo [3] ; Hoffmann, Anette [2]
Total Authors: 4
[1] UNESP Univ Estadual Paulista, Inst Biociencias, Dept Fisiol, BR-18618970 Botucatu, SP - Brazil
[2] Univ Sao Paulo, Fac Med Ribeirao Preto, Dept Fisiol, Lab Neurofisiol Comparada, BR-14049900 Ribeirao Preto, SP - Brazil
[3] UNESP Univ Estadual Paulista, Fac Ciencias Agr & Vet, Dept Morfol & Fisiol Anim, Sao Paulo - Brazil
Total Affiliations: 3
Document type: Journal article
Source: Hormones and Behavior; v. 65, n. 4, p. 394-400, APR 2014.
Web of Science Citations: 15

We evaluated the effect of increased plasma cortisol levels on fish antipredator behavior induced by conspecific chemical alarm cues. The experimental model for the study was the Frillfin goby Bathygobius soporator. We first confirmed that the alarm substance induces typical defensive antipredator responses in Frillfin gobies and described their alarm substance cells (epidermal `club' cells). Second, we confirmed that intraperitoneal cortisol implants increase plasma cortisol levels in this species. We then demonstrated that exogenous cortisol administration and subsequent exposure to an alarm substance decreased swimming activity to a greater extent than the activity prompted by either stimulus alone. In addition, cortisol did not abolish the sheltering response to the alarm chemical cue even though it decreased activity. As predators use prey movements to guide their first contact with the prey, a factor that decreases swimming activity clearly increases the probability of survival. Consequently, this observation indicates that cortisol helps improve the antipredator response in fish. (C) 2014 Elsevier Inc. All rights reserved. (AU)