Effect of melatonin on GnIH precursor gene expression in Nile tilapia, Oreochromis niloticus SCIE SCOPUS

Cited 2 time in WEB OF SCIENCE Cited 2 time in Scopus
Title
Effect of melatonin on GnIH precursor gene expression in Nile tilapia, Oreochromis niloticus
Author(s)
Kim, Jung-Hyun; Park, Jin Woo; Jin, Ye Hwa; Kim, Dae-Jung; Kwon, Joon Yeong
Publication Year
2018
Abstract
Sexual maturation and gonadal development of fish is greatly influenced by photic information, an external environmental factor, and melatonin mediates this information to regulate gonadotropin (GTH) secretion and gonadal activation. The relationship between gonadotropin inhibiting hormone (GnIH) and melatonin in fish, however, has not been studied to date. Here, the GnIH expression pattern and daily change of melatonin levels were compared to each other in mature tilapia (body length 16.1 +/- 0.2cm, body weight 77.7 +/- 3.43g), and the effect of melatonin injection on GnIH gene expression was investigated. GnIH gene expression increased at night when the secretion of melatonin increased, whereas gene expression decreased during the day when melatonin secretion decreased. Injecting tilapia intraperitoneally with melatonin increased GnIH gene expression and decreased the expression of gonadotropin releasing hormone (GnRH) and GTH. Furthermore, the injection decreased the 11-KT concentration in male tilapia. These results indicate that melatonin is likely to suppress the hypothalamus-pituitary-gonad (HPG) axis via the action of GnIH in this species.
ISSN
0929-1016
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/1069
DOI
10.1080/09291016.2017.1357336
Bibliographic Citation
BIOLOGICAL RHYTHM RESEARCH, v.49, no.2, pp.303 - 313, 2018
Publisher
TAYLOR & FRANCIS LTD
Subject
GONADOTROPIN-INHIBITORY HORMONE; HETEROPNEUSTES-FOSSILIS BLOCH; MALE MASU SALMON; STEROID-HORMONES; SEED PRODUCTION; SEA BASS; PLASMA; PHOTOPERIODISM; MATURATION; DISCOVERY
Keywords
Melatonin; Nile tilapia; gonadotropin inhibiting hormone; gonadotropin releasing hormone
Type
Article
Language
English
Document Type
Article
Publisher
TAYLOR & FRANCIS LTD
Files in This Item:
There are no files associated with this item.

qrcode

Items in ScienceWatch@KIOST are protected by copyright, with all rights reserved, unless otherwise indicated.

Browse