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Appetite-Controlling Endocrine Systems in Teleosts.

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This review explores endocrine appetite control in fish, highlighting key hormones and pathways. Understanding these systems is vital for fish growth, survival, and adaptation to diverse feeding environments.

Keywords:
adaptationsappetite controlfastingfeed intakehormonesneuropeptidesteleostsvoracious feeding

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Area of Science:

  • Comparative endocrinology
  • Neuroendocrinology
  • Fish biology

Background:

  • Mammalian studies provide a model for vertebrate appetite and body weight regulation.
  • The hypothalamus and peripheral signals (hormones) are key in appetite control.
  • Knowledge of endocrine appetite control in fish is limited despite their diversity.

Purpose of the Study:

  • To review current findings on endocrine appetite control systems in fish.
  • To highlight the role of these systems in fish growth and survival.
  • To discuss future research directions in fish appetite regulation.

Main Methods:

  • Literature review of recent findings on fish appetite control.
  • Analysis of endocrine and neuroendocrine signaling pathways in fish.
  • Comparison with mammalian appetite control mechanisms.

Main Results:

  • Mammalian-like appetite control networks exist in some fish models (zebrafish, goldfish).
  • Fish exhibit unique adaptations for managing starvation and food abundance.
  • Key neuropeptides and hormones involved in fish appetite are being identified.

Conclusions:

  • Endocrine appetite control is crucial for fish adaptation, growth, and survival.
  • Further research is needed to understand the diversity of these systems across fish species.
  • Investigating fish appetite control offers insights into vertebrate endocrinology.