Neuroendocrinology of reproduction in teleost fish

Y Zohar; J A Munoz-Cueto; Abigail Elizur; O Kah

doi:10.1016/j.ygcen.2009.04.017

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Neuroendocrinology of reproduction in teleost fish

Journal article

Peer reviewed

Neuroendocrinology of reproduction in teleost fish

Y Zohar, J A Munoz-Cueto, Abigail Elizur and O Kah

General and Comparative Endocrinology, Vol.165(3), pp.438-455

2010

DOI: https://doi.org/10.1016/j.ygcen.2009.04.017

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Abstract

neuroendocrinology

teleost fish

This review aims at synthesizing the most relevant information regarding the neuroendocrine circuits controlling reproduction, mainly gonadotropin release, in teleost fish. In teleosts, the pituitary receives a more or less direct innervation by neurons sending projections to the vicinity of the pituitary gonadotrophs. Among the neurotransmitters and neuropeptides released by these nerve endings are gonadotrophin-releasing hormones (GnRH) and dopamine, acting as stimulatory and inhibitory factors (in many but not all fish) on the liberation of LH and to a lesser extent that of FSH. The activity of the corresponding neurons depends on a complex interplay between external and internal factors that will ultimately influence the triggering of puberty and sexual maturation. Among these factors are sex steroids and other peripheral hormones and growth factors, but little is known regarding their targets. However, very recently a new actor has entered the field of reproductive physiology. KiSS1, first known as a tumour suppressor called metastin, and its receptor GPR54, are now central to the regulation of GnRH, and consequently LH and FSH secretion in mammals. The KiSS system is notably viewed as instrumental in integrating both environmental cues and metabolic signals and passing this information onto the reproductive axis. In fish, there are two KiSS genes, KiSS1 and KiSS2, expressed in neurons of the preoptic area and mediobasal hypothalamus. Pionneer studies indicate that KiSS and GPR54 expression seem to be activated at puberty. Although precise information as to the physiological effects of KiSS-1 in fish, notably on GnRH neurons and gonadotropin release, is still limited, KiSS neurons may emerge as the "gatekeeper" of puberty and reproduction in fish as in mammals.

Details

Title: Neuroendocrinology of reproduction in teleost fish
Authors: Y Zohar (Author) - University of Maryland Biotechnology Institute, United States
J A Munoz-Cueto (Author) - Universidad de Cádiz. Spain
Abigail Elizur (Author) - University of the Sunshine Coast - Faculty of Science, Health and Education
O Kah (Author) - Université de Rennes, France
Publication details: General and Comparative Endocrinology, Vol.165(3), pp.438-455
Publisher: Academic Press
Date published: 2010
DOI: 10.1016/j.ygcen.2009.04.017
ISSN: 0016-6480
Organisation Unit: University of the Sunshine Coast, Queensland; Centre for Bioinnovation
Language: English
Record Identifier: 99449421502621
Output Type: Journal article

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Collaboration types: Domestic collaboration; International collaboration
Web Of Science research areas: Endocrinology & Metabolism; Zoology

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