Photoperiodic Regulation of Reproduction in Vertebrates

Nakane, Yusuke; Yoshimura, Takashi

doi:10.1146/annurev-animal-020518-115216

Cited by 90 publications

(70 citation statements)

References 140 publications

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“…In both vole species Tsh expression is higher under LP conditions during all stages of 427 development ( Fig. 3C,D), which is in agreement with previous studies in other mammals, 428 birds and fish (for review see Dardente et al, 2014;Nakane and Yoshimura, 2019). We 429 sampled 16 hours after lights off, when Tsh expression is peaking.…”

supporting

confidence: 85%

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Gonads or body? Differences in gonadal and somatic photoperiodic growth response in two vole species

Rosmalen

Dalum

Hazlerigg

et al. 2020

Preprint

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statement: Development of the neuroendocrine system driving photoperiodic 34 responses in gonadal and somatic growth differ between the common and the tundra vole, 35 indicating that they use a different breeding strategy. 36 37 List of abbreviations: 38 ARC -arcuate nucleus 39 Dio2 -iodothyronine-deiodinase 2 40 Dio3 -iodothyronine-deiodinase 3 41 Dnmt1 -DNA methyltransferase 1 42 Dnmt3a -DNA methyltransferase 3a 43 GH -growth hormone 44 GnRH -gonadotropin-releasing hormone 45 Kiss1 -Kisspeptin 46 KNDy -kisspeptin/neurokininB/Dynorphin 47 PNESphotoperiodic neuroendocrine system 50 PTpars tuberalis 51 SCN -suprachiasmatic nucleus 52 SPshort photoperiod 53 Tsh -thyroid-stimulating-hormone- subunit 54 55 56 57 58 59 60 61 62 63 64 65 66 Abstract 67To optimally time reproduction, seasonal mammals use a photoperiodic neuroendocrine 68 system (PNES) that measures photoperiod and subsequently drives reproduction. To adapt to 69 late spring arrival at northern latitudes, a lower photoperiodic sensitivity and therefore a 70 higher critical photoperiod for reproductive onset is necessary in northern species to arrest 71 reproductive development until spring onset. Temperature-photoperiod relationships, and 72 hence food availability-photoperiod relationships, are highly latitude dependent. Therefore, 73we predict PNES sensitivity characteristics to be latitude-dependent. Here, we investigated 74 photoperiodic responses at different times during development in northern-(tundra/root vole, 75Microtus oeconomus) and southern vole species (common vole, Microtus arvalis) exposed to 76 constant short (SP) or long photoperiod (LP). 77 M. oeconomus grows faster under LP, whereas no photoperiodic effect on somatic 78 growth is observed in M. arvalis. Contrastingly, gonadal growth is more sensitive to 79 photoperiod in M. arvalis, suggesting that photoperiodic responses in somatic and gonadal 80 growth can be plastic, and might be regulated through different mechanisms. In both species, 81 thyroid-stimulating-hormone- subunit (Tsh) and iodothyronine-deiodinase 2 (Dio2) 82 expression is highly increased under LP, whereas Tshr and Dio3 decreases under LP. High 83 Tshr levels in voles raised under SP may lead to increased sensitivity to increasing 84 photoperiods later in life. The higher photoperiodic induced Tshr response in M. oeconomus 85 suggests that the northern vole species might be more sensitive to TSH when raised under SP. 86 Species differences in developmental programming of the PNES, which is dependent 87 on photoperiod early in development, may form part divergent breeding strategies evolving 88 as part of latitudinal adaptation. 89 90

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supporting

confidence: 85%

“…In mammals, the photoperiodic neuroendocrine system (PNES) measures photoperiod 101 and subsequently drives annual rhythms in physiology and reproduction (for review see 102 Dardente et al, 2018;Nakane and Yoshimura, 2019). Light is perceived by retinal 103 photoreceptors that signal to the suprachiasmatic nucleus (SCN).…”

Section: Lplong Photoperiod 48mentioning

confidence: 99%

Gonads or body? Differences in gonadal and somatic photoperiodic growth response in two vole species

Rosmalen

Dalum

Hazlerigg

et al. 2020

Preprint

View full text Add to dashboard Cite

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“…of daily and seasonal variation in Tawny Owl vocalizations may be related to the breeding and territorial behaviors, ensuring the maximal survival of their offspring [16].…”

Section: Plos Onementioning

confidence: 99%

“…Biological timing is essential in birds. Among vertebrate species, birds have highly sophisticated photoperiodic mechanisms that detect changes in daylength to adapt to seasonal environmental variations [16]. In the circadian range, robust nocturnal elevation in vocal activity has been previously documented in several bird species [17][18][19].…”

Section: Introductionmentioning

confidence: 99%

Daily and seasonal fluctuation in Tawny Owl vocalization timing

et al. 2020

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A robust adaptation to environmental changes is vital for survival. Almost all living organisms have a circadian timing system that allows adjusting their physiology to cyclic variations in the surrounding environment. Among vertebrates, many birds are also seasonal species, adapting their physiology to annual changes in photoperiod (amplitude, length and duration). Tawny Owls (Strix aluco) are nocturnal birds of prey that use vocalization as their principal mechanism of communication. Diurnal and seasonal changes in vocalization have been described for several vocal species, including songbirds. Comparable studies are lacking for owls. In the present work, we show that male Tawny Owls present a periodic vocalization pattern in the seconds-to-minutes range that is subject to both daily (early vs. late night) and seasonal (spring vs. summer) rhythmicity. These novel theory-generating findings appear to extend the role of the circadian system in regulating temporal events in the seconds-to-minutes range to other species.

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“…Birds have different seasonal reproductive mechanisms, one of these is associated to photoperiods cycles, due to fact that they perceive light through photo receptors which are in the retina and pineal gland (Nakane and Yoshimura, 2019). Activation of photo receptors induce the secretion of thyroid stimulant hormone (TSH) which activates thyroid hormone in the hypothalamus controlling the secretion of gonadotropin release hormone (GnRH) and as a result, the secretion of luteinizing hormone (LH) and follicle stimulant hormone (FSH), which stimulate gonadal growth, as well as gametes productions (Bentley et al, 2006;Nakane and Yoshimura, 2019).…”

Section: Introductionmentioning

confidence: 99%

Testicular development induced by GnRH-IS in budgerigar (Melopsittacus undulatus)

et al. 2020

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Nowadays, the third part of parrots in the world is endangered or vulnerable; an alternative for their preservation is assisted reproduction in captivity through hormonal manipulation. In birds, GnRH is the main hormone which controls reproductive physiology, it is known there are three types: GnRH-I, GnRH-II and GnRH-III, involved in the release or inhibition of luteinizing hormone and follicle stimulant hormone to control gonadal and gametic development. The objective of this study was, to evaluate the effect of administrating synthetic GnRH-I in the testicular development of Melopsittacus undulatus. Twenty-eight adult budgerigars were randomly divided in two groups: control (n=14) and treated (n=14) with a unique dose of synthetic GnRH-I. Testicular development was assessed through ultrasonography and density was evaluated with pixels. Germinal diameter and thickness of germinal epithelium were determined with histology; there were identified and countified different cellular strains in seminiferous tubules therefore spermatobioscopy. Results. Ecographic density was: control group: 76 ± 7 pixels, treated group 41 ± 3 pixels. Thickness of germinal epitellium, 51.5 ± 2.9µm and 73.1 ± 3.1µm, for control group and treated group respectively. Sperm concentration in the treated group was 300% superior than in control group. It is concluded that the administration of synthetic GnRH-I, is a viable alternative to be used as part of the assisted reproductive techniques to induce reproduction.

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Photoperiodic Regulation of Reproduction in Vertebrates

Cited by 90 publications

References 140 publications

Gonads or body? Differences in gonadal and somatic photoperiodic growth response in two vole species

Gonads or body? Differences in gonadal and somatic photoperiodic growth response in two vole species

Daily and seasonal fluctuation in Tawny Owl vocalization timing

Testicular development induced by GnRH-IS in budgerigar (Melopsittacus undulatus)

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