The role of photoperiod and melatonin in the control of seasonal reproduction in mammals
<b>Melatonin secreted by pineal cells is a hormone whose biosynthesis is coordinated by neurons of the master clock located in the hypothalamic suprachiasmatic nuclei (SCN), characterized by the generation of a 24-hour rhythm. In many species of mammals, fluctuations in melatonin secretion aff...
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Polish Society of Animal Production
2020
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oai:doaj.org-article:b5dab2997edd4836a28baabe4421c0da2021-11-10T16:43:59ZThe role of photoperiod and melatonin in the control of seasonal reproduction in mammals1733-73052719-393410.5604/01.3001.0014.6071https://doaj.org/article/b5dab2997edd4836a28baabe4421c0da2020-12-01T00:00:00Zhttp://zootechnical.com/gicid/01.3001.0014.6071http://zootechnical.com/gicid/pdf/01.3001.0014.6071https://doaj.org/toc/1733-7305https://doaj.org/toc/2719-3934<b>Melatonin secreted by pineal cells is a hormone whose biosynthesis is coordinated by neurons of the master clock located in the hypothalamic suprachiasmatic nuclei (SCN), characterized by the generation of a 24-hour rhythm. In many species of mammals, fluctuations in melatonin secretion affect reproductive functions, e.g. by regulating the frequency and amount of pulsatile secretion of hypothalamic and gonadotropic hormones. Seasonal breeding is a common adaptive strategy among mammals, allowing them to reproduce during the periods of the year that are most favourable for the later survival and growth of the offspring. This type of reproduction is characteristic of sheep, with winter reproductive activity, and hamsters, with summer reproductive activity. In these animals, melatonin synthesis is largely regulated by the photoperiod, which indirectly influences the period of reproductive activity or passivity. The aim of this study was to gather available knowledge on melatonin as a key element controlling seasonal reproduction. The paper presents the general shape of the circadian rhythm and the neuroendocrine mechanism regulating animal reproduction depending on the variable photoperiod. The collected results suggest that melatonin, kisspeptins, gonadotropin-releasing hormone (GnRH), sex hormones and thyroid hormones participate in the regulation of seasonal reproduction in mammals. </b> Izabela SzpręgielDanuta WronskaPolish Society of Animal Productionarticlemelatoninphotoperiodseasonal reproductionsheephamsterZoologyQL1-991ENPLRoczniki Naukowe Polskiego Towarzystwa Zootechnicznego, Vol 16, Iss 4, Pp 39-47 (2020) |
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DOAJ |
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EN PL |
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melatonin photoperiod seasonal reproduction sheep hamster Zoology QL1-991 |
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melatonin photoperiod seasonal reproduction sheep hamster Zoology QL1-991 Izabela Szpręgiel Danuta Wronska The role of photoperiod and melatonin in the control of seasonal reproduction in mammals |
| description |
<b>Melatonin secreted by pineal cells is a hormone whose biosynthesis is coordinated by neurons of the master clock located in the hypothalamic suprachiasmatic nuclei (SCN), characterized by the generation of a 24-hour rhythm. In many species of mammals, fluctuations in melatonin secretion affect reproductive functions, e.g. by regulating the frequency and amount of pulsatile secretion of hypothalamic and gonadotropic hormones. Seasonal breeding is a common adaptive strategy among mammals, allowing them to reproduce during the periods of the year that are most favourable for the later survival and growth of the offspring. This type of reproduction is characteristic of sheep, with winter reproductive activity, and hamsters, with summer reproductive activity. In these animals, melatonin synthesis is largely regulated by the photoperiod, which indirectly influences the period of reproductive activity or passivity. The aim of this study was to gather available knowledge on melatonin as a key element controlling seasonal reproduction. The paper presents the general shape of the circadian rhythm and the neuroendocrine mechanism regulating animal reproduction depending on the variable photoperiod. The collected results suggest that melatonin, kisspeptins, gonadotropin-releasing hormone (GnRH), sex hormones and thyroid hormones participate in the regulation of seasonal reproduction in mammals. </b>
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| format |
article |
| author |
Izabela Szpręgiel Danuta Wronska |
| author_facet |
Izabela Szpręgiel Danuta Wronska |
| author_sort |
Izabela Szpręgiel |
| title |
The role of photoperiod and melatonin in the control of seasonal reproduction in mammals |
| title_short |
The role of photoperiod and melatonin in the control of seasonal reproduction in mammals |
| title_full |
The role of photoperiod and melatonin in the control of seasonal reproduction in mammals |
| title_fullStr |
The role of photoperiod and melatonin in the control of seasonal reproduction in mammals |
| title_full_unstemmed |
The role of photoperiod and melatonin in the control of seasonal reproduction in mammals |
| title_sort |
role of photoperiod and melatonin in the control of seasonal reproduction in mammals |
| publisher |
Polish Society of Animal Production |
| publishDate |
2020 |
| url |
https://doaj.org/article/b5dab2997edd4836a28baabe4421c0da |
| work_keys_str_mv |
AT izabelaszpregiel theroleofphotoperiodandmelatonininthecontrolofseasonalreproductioninmammals AT danutawronska theroleofphotoperiodandmelatonininthecontrolofseasonalreproductioninmammals AT izabelaszpregiel roleofphotoperiodandmelatonininthecontrolofseasonalreproductioninmammals AT danutawronska roleofphotoperiodandmelatonininthecontrolofseasonalreproductioninmammals |
| _version_ |
1718439909632507904 |