About this Research Topic
The reduction of feeding levels is a generic behavioral response of stress in fish. Food intake regulation entails a highly complex network involving several peripheral and internal signals that are centrally integrated in order to generate orexigenic or anorexigenic signals that induce an increase or decrease in food intake. The physiological mechanisms underlying this effect of stress on food intake is poorly known in fish. Nevertheless, it has been proposed that some stress-related actors that could mediate this response include the melanocortin system, CRF, and other neuropeptides, and molecules such as cortisol and central monoamines.
The goal of this Research Topic is to congregate those original research works or reviews addressing the underlying mechanisms that could mediate the anorectic effect of stress in fish, and how the nutritional status of the animals may modify the stress response, thus approaching the bidirectional interaction between stress and feeding. There are some previous reports that indicate the possible role of CRF, cortisol, dopamine, serotonin or ACTH on the hypophagic effect of stress in fish. In mammals the implication of the alterations in gut-brain neuroendocrine signaling is well known, as well as the role of the central GLP-1 system in this hypophagic response, among others. However, the interaction of these mediators on the neuroendocrine signals that regulate food intake in fish are mostly unknown. Therefore, study of these interactions is of great importance, not only to expand knowledge in this field, but also for the potential applications in aquaculture.
In this Research Topic, we welcome Original Research and Review articles that address the effect of stress on specific mechanisms involved in the feeding regulation in fish, such as:
• The effect of stress on the hypothalamic appetite-related neuropeptides, and the involvement of other brain areas,
• The interaction of stress with the hedonic and temporal regulation of food intake in fish,
• The effect of stress on gut-brain neuroendocrine signaling,
• Stress effects on circadian rhythms associated to feeding…,
Other areas of interest include how food intake and its regulatory factors, both neuroendocrine (neuropeptides, monoamines) and environmental (light-dark cycle, temperature) can condition the stress response in fish.
The goal of this Research Topic is to congregate those original research works or reviews addressing the underlying mechanisms that could mediate the anorectic effect of stress in fish, and how the nutritional status of the animals may modify the stress response, thus approaching the bidirectional interaction between stress and feeding. There are some previous reports that indicate the possible role of CRF, cortisol, dopamine, serotonin or ACTH on the hypophagic effect of stress in fish. In mammals the implication of the alterations in gut-brain neuroendocrine signaling is well known, as well as the role of the central GLP-1 system in this hypophagic response, among others. However, the interaction of these mediators on the neuroendocrine signals that regulate food intake in fish are mostly unknown. Therefore, study of these interactions is of great importance, not only to expand knowledge in this field, but also for the potential applications in aquaculture.
In this Research Topic, we welcome Original Research and Review articles that address the effect of stress on specific mechanisms involved in the feeding regulation in fish, such as:
• The effect of stress on the hypothalamic appetite-related neuropeptides, and the involvement of other brain areas,
• The interaction of stress with the hedonic and temporal regulation of food intake in fish,
• The effect of stress on gut-brain neuroendocrine signaling,
• Stress effects on circadian rhythms associated to feeding…,
Other areas of interest include how food intake and its regulatory factors, both neuroendocrine (neuropeptides, monoamines) and environmental (light-dark cycle, temperature) can condition the stress response in fish.
Keywords: Fish, Stress response, HPI axis, Neuroendocrine signals, Food intake
Important Note: All contributions to this Research Topic must be within the scope of the section and journal to which they are submitted, as defined in their mission statements. Frontiers reserves the right to guide an out-of-scope manuscript to a more suitable section or journal at any stage of peer review.
