Cited by 34Circadian rhythm and melatoninReproductive biology and impacts on aquatic speciesHypothalamic control of reproductive hormones

Cloning and expression of melatonin receptors in the mudskipper Boleophthalmus pectinirostris: their role in synchronizing its semilunar spawning rhythm

Hong, Lu Yan, Hong, Wan Shu, Zhu, Wen Bo, Shi, Qiong, You, Xin Xin, Chen, Shi Xi·2014·General and Comparative Endocrinology

Abstract

The mudskipper Boleophthalmus pectinirostris, a burrow-dwelling fish inhabiting intertidal mudflats, spawns only once during the spawning season around either the first or last lunar quarters. To understand the molecular mechanisms regulating this semilunar spawning rhythm, we cloned all melatonin receptor subtypes (mtnr1a1.4, mtnr1a1.7, mtnr1b, and mtnr1c). Expression of three melatonin receptor subtypes (except mtnr1c) was found in the ovaries. In contrast, the expression of all receptor subtypes was found in the diencephalon and the pituitary. In the fully-grown follicles, only mtnr1a1.7 mRNA was detected in both the isolated follicle layers and denuded oocytes. Interestingly, the transcript levels of both mtnr1a1.4 in the diencephalon and mtnr1a1.7 in the ovary displayed two cycles within one lunar month, and peaked around the first and last lunar quarters. We used 17α,20β-dihydroxy-4-pregnen-3-one (DHP), a maturation-inducing hormone, as a biomarker to examine the involvement of melatonin receptors in the control of the spawning cycle. Melatonin significantly increased the plasma DHP level 1h post intraperitoneal injection. Melatonin also directly stimulated ovarian fragments in vitro to produce a significantly higher amount of DHP. Taken together, these results provided the first evidence that melatonin receptors were involved in the synchronization of the semilunar spawning rhythm in the female mudskipper by acting through the HPG axis and/or directly on ovarian tissues to stimulate the production of DHP.

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Crossref · 10.1016/j.ygcen.2013.11.004

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  • At least two melatonin receptors in the mudskipper Boleophthalmus pectinirostris fluctuate with semilunar periodicity, in phase with the aanat2 gene in the pineal.

    “Moreover, at least two of the melatonin receptors in the mudskipper, Boleophthalmus pectinirostris fluctuate with semilunar periodicity, in phase with the aanat2 gene in the pineal of that species (40).”

    From An Overview of Monthly Rhythms and Clocks (2017) · cites this paper as [40]

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Authors
Hong, L. Y., Hong, W. S., Zhu, W. B., Shi, Q., You, X. X., & Chen, S. X.
Affiliations
  • Xiamen University (CN)
  • BGI Group (China) (CN)
Corresponding author
Chen, Shi Xi
Venue
General and Comparative Endocrinology
Publisher
Elsevier BV
Published
2014-01
Volume
195
Pages
138-150
ISSN
0016-6480 (ISSN-L)
OpenAlex
W2031912633
Cited by
34
References
62
Citations by year
2026: 1 · 2025: 3 · 2024: 3 · 2023: 5 · 2022: 4 · 2021: 6 · 2020: 3 · 2019: 3 · 2018: 1 · 2017: 1 · 2016: 1 · 2015: 2 · 2014: 1
FWCI
0.72
Type
journal article
Language
en
Open access
closed
Locations
  • General and Comparative Endocrinology (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • National Natural Science Foundation of China (40976095, 31201977)
  • Key Project of Science and Technology of Fujian Province (2008N0041)
  • Xiamen University President Research Award (2013121044)
  • Shenzhen R & D Foundation for Science and Technology (CXB201108250095A)
Topics
  • Life Sciences › Neuroscience › Endocrine and Autonomic Systems › Circadian rhythm and melatonin
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Physiology › Reproductive biology and impacts on aquatic species
  • Health Sciences › Medicine › Reproductive Medicine › Hypothalamic control of reproductive hormones
Keywords
melatonin receptors, Boleophthalmus pectinirostris, mudskipper, MTNR1B, ovarian follicle maturation, DHP, hypothalamic-pituitary-gonadal axis, diencephalon, pituitary gland
MeSH terms
Amino Acid Sequence, Animals, Cloning, Molecular, Female, Molecular Sequence Data, Ovary, Perciformes, Periodicity, Phylogeny, Reproduction, RNA, Messenger, Seasons, Tissue Distribution, Moon, Sequence Homology, Amino Acid, Reverse Transcriptase Polymerase Chain Reaction, Receptors, Melatonin, Real-Time Polymerase Chain Reaction

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