Perspectives on fish gonadotropins and their receptors

B Levavi-Sivan, J Bogerd, EL Mañanós… - General and …, 2010 - Elsevier
Teleosts lack a hypophyseal portal system and hence neurohormones are carried by nerve
fibers from the preoptic region to the pituitary. The various cell types in the teleost pituitary …

Social regulation of reproduction in male cichlid fishes

KP Maruska - General and comparative endocrinology, 2014 - Elsevier
Social interactions and relative positions within a dominance hierarchy have helped shape
the evolution of reproduction in many animals. Since reproduction is crucial in all animals …

Neurokinin Bs and neurokinin B receptors in zebrafish-potential role in controlling fish reproduction

J Biran, O Palevitch, S Ben-Dor… - Proceedings of the …, 2012 - National Acad Sciences
The endocrine regulation of vertebrate reproduction is achieved by the coordinated actions
of several peptide neurohormones, tachykinin among them. To study the evolutionary …

The assessment of different dietary selenium resources on reproductive performance, spawning indicators, and larval production of red tilapia (Oreochromis …

MAE Naiel, ESH Eissa, YM Abd El-Aziz… - Aquaculture …, 2023 - Wiley Online Library
This trial aimed to investigate whether dietary selenium form influenced the reproductive
performance of red tilapia broodfish. Four experimental broodstock diets were prepared …

Targeted Mutagenesis of the Hypophysiotropic Gnrh3 in Zebrafish (Danio rerio) Reveals No Effects on Reproductive Performance

OS Spicer, TT Wong, N Zmora, Y Zohar - PLoS One, 2016 - journals.plos.org
Gnrh is the major neuropeptide regulator of vertebrate reproduction, triggering a cascade of
events in the pituitary-gonadal axis that result in reproductive competence. Previous …

Effects of heat stress on follicular development and atresia in Nile tilapia (Oreochromis niloticus) during one reproductive cycle and its potential regulation by …

J Qiang, YF Tao, JH Zhu, SQ Lu, ZM Cao, JL Ma, J He… - Aquaculture, 2022 - Elsevier
Nile tilapia (Oreochromis niloticus) ovulates and releases eggs many times a year, and its
suitable spawning temperature is 22° C–28° C. High temperature limits its success in …

LPXRFa, the Piscine Ortholog of GnIH, and LPXRF Receptor Positively Regulate Gonadotropin Secretion in Tilapia (Oreochromis niloticus)

J Biran, M Golan, N Mizrahi, S Ogawa, IS Parhar… - …, 2014 - academic.oup.com
LPXRFamide (LPXRFa) peptides have been characterized for their ability to inhibit
gonadotropin (GTH) release in birds and stimulate growth hormone (GH) release in frogs …

cAMP signaling in ovarian physiology in teleosts: A review

T Takahashi, K Ogiwara - Cellular Signalling, 2023 - Elsevier
Ovarian function in teleosts, like in other vertebrates, is regulated by two distinct
gonadotropins, follicle-stimulating hormone (FSH) and luteinizing hormone (LH) …

Spexin and a novel cichlid-specific spexin paralog both inhibit FSH and LH through a specific galanin receptor (Galr2b) in tilapia

Y Cohen, K Hausken, Y Bonfil, M Gutnick… - Frontiers in …, 2020 - frontiersin.org
Spexin (SPX) is a 14 amino acid peptide hormone that has pleiotropic functions across
vertebrates, one of which is involvement in the brain-pituitary-gonad axis of fish. SPX (1) has …

Medaka follicle-stimulating hormone (Fsh) and luteinizing hormone (Lh): Developmental profiles of pituitary protein and gene expression levels

S Burow, R Fontaine, K von Krogh, I Mayer… - General and …, 2019 - Elsevier
The two gonadotropins follicle-stimulating hormone (Fsh) and luteinizing hormone (Lh) are
of particular importance within the hypothalamic-pituitary-gonadal (HPG) axis of vertebrates …