Lesions of Gonadotropin-Releasing Hormone-lmmunoreactive Terminal Nerve Cells: Effects on the Reproductive Behavior of Male Dwarf Gouramis

Yamamoto, Naoyuki; Oka, Yoshitaka; Kawashima, Seiichiro

doi:10.1159/000127203

Cited by 171 publications

(106 citation statements)

References 30 publications

Supporting

Mentioning

101

Contrasting

Order By: Relevance

“…The correlation between GnRH1 and GnRH3 with sexual behavior and nest-building was previously reported for blue gourami and other fish [44,45]. Thus, it is suggested that in non-reproductively active males, an increase in water salinity and conductivity induces GnRH1gene expression, which in turn increases GtH and PRL synthesis.…”

Section: Discussionsupporting

confidence: 58%

Underground water affects sexual behavior and gene expression of hormones related to reproduction in blue gourami males

Degani¹,

Lévy²

2013

ABC

View full text Add to dashboard Cite

This study examined the effect of underground water on reproduction-and growth-related hormones in blue gourami males under non-reproductive and reproductive conditions. An increase in the percentage of males building nests under the highest percentage of underground water were compared to fish that maintained a lower percentage of underground water in the first two days. The % Gonado-somatic index (GSI) of males building nests was higher than nonreproductively active males in water containing the lowest concentration of underground water. In nonreproductively active males, brain gonadotropin releasing hormone 1 (GnRH1) and pituitary β subunit of gonadotropins (GtHs) and prolactin (PRL) mRNA levels were significantly higher in males maintained in underground water. In reproductively active males, mRNA levels of brain GnRH1, gonadotropin releasing hormone 3 (GnRH3) and pituitary PRL mRNA levels were significantly higher than males maintained in underground water. Thus, it is suggested that underground water with high salinity and conductivity levels affects the gene expression of reproduction-related hormones; in reproductively active males, it shortened the duration of nest-building by blue gourami males.

show abstract

Section: Discussionsupporting

confidence: 58%

Underground water affects sexual behavior and gene expression of hormones related to reproduction in blue gourami males

Degani¹,

Lévy²

2013

ABC

View full text Add to dashboard Cite

show abstract

“…The TN-GnRH system has been suggested to affect the motivational or arousal state of the animal (Oka and Matsushima, 1993;Yamamoto et al, 1997;Abe and Oka, 2007). If GnRH enhances odorant contrast in general, a motivated animal can respond more appropriately to the external environment.…”

Section: What Is the Function Of Gnrh In The Olfactory System?mentioning

confidence: 99%

Ontogenic Development of Three GnRH Systems in the Brain of a Pleuronectiform Fish, Barfin Flounder

Amano

Okubo²,

Yamanome³

et al. 2004

Zoological Science

Self Cite

View full text Add to dashboard Cite

“…Recently, Yamamoto et al (1997) reported that lesioning the terminal nerve GnRH neurons changes the threshold for nest-building behavior in the dwarf gourami (Colisa lalia), but does not influence other reproductive behaviors. Their data imply that 5Trp 7 Leu 8 6GnRH may indeed be related to reproductive motivation.…”

Section: Fig 2 Expression Of the Threementioning

confidence: 99%

Genomic Structure and Expression Sites of Three Gonadotropin-Releasing Hormone Genes in One Species

White

Fernald

1998

General and Comparative Endocrinology

View full text Add to dashboard Cite

In the teleost fish, Haplochromis burtoni, gonadotropinreleasing hormone (GnRH) peptide has been localized to three distinct regions in the brain. Each GnRH population is associated with expression of a distinct cDNA as previously described. Here we report the complete genomic sequences encoding these three forms and compare their structural organization, putative regulatory elements, and expression patterns in the body. All three genes share a common structure of four exons: the first exon encodes the 5Ј untranslated region; the second exon encodes the signal sequence, GnRH decapeptide, and the 5Ј end of the GnRH-associated peptide (GAP); the third exon consists entirely of GAP coding sequence; and the fourth exon encodes the 3Ј end of GAP and the 3Ј untranslated region. Each of the three GnRH genes has been shown previously to have a distinct spatial expression pattern in the brain, and here we use reverse transcription and cDNA amplification to demonstrate that each gene is expressed in the body. The gene encoding the releasing form, 5Ser 8 6GnRH, is expressed in the heart, liver, spleen, kidney, and testis, as well as in the preoptic area. The 5His 5 Trp 7 Tyr 8 6GnRH gene is expressed in the testis as well as in the midbrain. The 5Trp 7 Leu 8 6GnRH gene is expressed in the testis and the terminal nerve area. We examined the 500 bp upstream of exon 1 in all three H. burtoni genes and identified putative binding sites for glucocorticoid receptor, androgen receptor, and progesterone receptor, as well as the transcription factors Ap-1 and Sp-1. The genomic sequence encoding the terminal nerve form of GnRH (i.e., 5Trp 7 Leu 8 6GnRH) in H. burtoni is remarkably similar to that encoding the presumed releasing form of GnRH in salmonids, especially in the 3Ј intergenic region. Taken together with phylogenetic and mRNA localization data in salmonids, these data suggest that the gene encoding the releasing form of GnRH in salmonids may not yet be described.

show abstract

Lesions of Gonadotropin-Releasing Hormone-lmmunoreactive Terminal Nerve Cells: Effects on the Reproductive Behavior of Male Dwarf Gouramis

Cited by 171 publications

References 30 publications

Underground water affects sexual behavior and gene expression of hormones related to reproduction in blue gourami males

Underground water affects sexual behavior and gene expression of hormones related to reproduction in blue gourami males

Ontogenic Development of Three GnRH Systems in the Brain of a Pleuronectiform Fish, Barfin Flounder

Genomic Structure and Expression Sites of Three Gonadotropin-Releasing Hormone Genes in One Species

Contact Info

Product

Resources

About