Journal article
Neuroendocrinology of reproduction in teleost fish
General and Comparative Endocrinology, Vol.165(3), pp.438-455
2010
Abstract
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 StatesJ A Munoz-Cueto (Author) - Universidad de Cádiz. SpainAbigail Elizur (Author) - University of the Sunshine Coast - Faculty of Science, Health and EducationO 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; 0016-6480
- Organisation Unit
- University of the Sunshine Coast, Queensland; Centre for Bioinnovation
- Language
- English
- Record Identifier
- 99449421502621
- Output Type
- Journal article
Metrics
6 File views/ downloads
555 Record Views
InCites Highlights
These are selected metrics from InCites Benchmarking & Analytics tool, related to this output
- Collaboration types
- Domestic collaboration
- International collaboration
- Web Of Science research areas
- Endocrinology & Metabolism
- Zoology
UN Sustainable Development Goals (SDGs)
This output has contributed to the advancement of the following goals:
Source: InCites