Circadian rhythms of melatonin in haemolymph and optic lobes of Chinese mitten crab (<i>Eriocheir sinensis</i>) and Chinese grass shrimp (<i>Palaemonetes sinensis</i>)

Han, Zhibin; Li, Xiaodong; Xu, Wei‐Bin; Li, Yingdong

doi:10.1080/09291016.2018.1452592

Cited by 13 publications

(6 citation statements)

References 31 publications

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“…For gene expression, molt stage (eyestalk CasMIH and hepatopancreas CasEcR ) or their interaction (eyestalk CasEcR ) showed significant results. Eyestalk holds the visual ganglia and is responsible for the synthesis of circadian molecules such as melatonin in many crustaceans, for example, Eriocheir sinensis and Palaemonetes sinensis ( Han et al, 2018 ), and Neohelice granulata ( Maciel et al, 2008 ). The X-organ-sinus gland complex seems to be the master of this rhythmicity ( Aréchiga et al, 1985 ; 1993 ) and it is under the direct influence of light ( Glantz et al, 1983 ), which would impact the daily variation of the hormones and gene expression evaluated in this work.…”

Section: Discussionmentioning

confidence: 99%

“…In Crustaceans, on the other hand, there is no consensus as the time of the day at which melatonin peaks in the various species as well as if this hormone displays an oscillatory pattern ( Agapito et al, 1995 ; Tilden et al, 1997 ; Maciel et al, 2008 ; Markowska et al, 2009 ; Sainath et al, 2013 ; Han et al, 2018 ). As to melatonin actions in crustaceans, it has already been demonstrated that the indoleamine plays a role in limb regeneration ( Tilden et al, 1997 ), ecdysteroid production ( Sainath S. B. and Reddy P. S., 2010 ; Girish et al, 2015 ), antioxidant defense ( Maciel et al, 2010 ; Geihs et al, 2016 ; She et al, 2019 ), color change ( Nery et al, 1999 ), locomotor activity ( Geihs et al, 2010 ), and hyperglycemia ( Sainath SB.…”

Section: Introductionmentioning

confidence: 99%

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CasEcR and CasMIH Genes in the Blue Crab, Callinectes sapidus: A Temporal Evaluation and Melatonin Effects

David

Assis²,

Moraes³

et al. 2022

Front. Physiol.

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Environmental cues synchronize endogenous rhythms of many physiological processes such as hormone synthesis and secretion. Little is known about the diurnal pattern of hormones and gene expression of the Callinectes sapidus molt cycle. We aimed to investigate in the eyestalk and hepatopancreas of premolt and intermolt C. sapidus the following parameters: 1) the diurnal expression of the ecdysteroid receptor CasEcR isoforms, and the molt inhibiting hormone CasMIH; 2) the diurnal hemolymph ecdysteroid and melatonin levels; and 3) melatonin effects on the transcripts of the above-mentioned genes in intermolt C. sapidus. Ecdysteroid levels were higher in the premolt than the intermolt animals at all time points evaluated (ZTs). Premolt crabs displayed a variation of ecdysteroid concentration between time points, with a reduction at ZT17. No difference in the melatonin level was seen in either molt stage or between stages. In the eyestalk of intermolt animals, CasEcR expression oscillated, with a peak at ZT9, and premolt crabs have a reduction at ZT9; CasMIH transcripts did not vary along 24 h in either molt stage. Moreover, the evaluated eyestalk genes were more expressed at ZT9 in the intermolt than the premolt crabs. In the hepatopancreas, CasEcR expression showed a peak at ZT9 in premolt crabs. Exogenous melatonin (10−7 mol/animal) reduced the expression of both genes in the eyestalk at ZT17. In the hepatopancreas, melatonin markedly increased the expression of the CasEcR gene at ZT9. Taken altogether, our results are pioneer in demonstrating the daily oscillation of gene expression associated to molt cycle stages, as well as the daily ecdysteroid and melatonin levels and the remarkable influence of melatonin on the molt cycle of C. sapidus.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

CasEcR and CasMIH Genes in the Blue Crab, Callinectes sapidus: A Temporal Evaluation and Melatonin Effects

David

Assis²,

Moraes³

et al. 2022

Front. Physiol.

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“…The eyestalk in crustaceans serves as the central hub of the circadian system, orchestrating key physiological events such as molting, growth, and reproduction [10]. Recent studies highlight the involvement of eyestalk neuroendocrine hormones in circadian rhythms [11,12]. Among the neuroendocrine factors regulating crustacean reproduction, molt-inhibiting hormone (MIH), gonad/vitellogenesis-inhibiting hormone (GIH/VIH), melatonin, crustacean hyperglycemic hormone (CHH), and mandibular organ-inhibiting hormone (MOIH) are crucial for molting, growth, and gonadal development [13][14][15].…”

Section: Introductionmentioning

confidence: 99%

Impact Analysis of Photoperiodic Disorder on the Eyestalk of Chinese Mitten Crab (Eriocheir sinensis) through High-Throughput Sequencing Technology

Zhang,

Chai,

et al. 2024

Life

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Light is an indispensable factor in the healthy growth of living organisms, and alterations in the photoperiod can have consequences for body homeostasis. The eyestalk is a photosensitive organ that secretes various hormones to regulate the Chinese mitten crab (Eriocheir sinensis). However, the photoperiod-dependent eyestalk patterns of gene expression that may underlie changes in body homeostasis are unknown. In this study, we investigated the molecular mechanisms involved in eyestalk transcriptomic responses in E. sinensis under different photoperiod regimes on days 2, 4, and 6. The photoperiods tested were 12, 24, and 0 h light/day. In total, we obtained 110, 958, 348 clean datasets and detected 1809 differentially expressed genes (DEGs). Genes involved in the crustacean hyperglycemic hormone superfamily and juvenile hormones were observed, which play important roles in gonadal development, growth, and immunity in E. sinensis and may also be involved in photoperiod adaptation. In addition, the MAPK signaling pathway was the only signaling pathway identified in the continuous light group but was absent in the continuous darkness group. We suggest that the MAPK pathway is highly responsive to light input during the subjective night and insensitive to light during the middle of the subjective day. These results provide insight into the molecular mechanisms underlying the effects of photoperiod on the immune regulation of E. sinensis.

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“…Homology cloning and RNA‐sequencing approaches have been used to sequence and identify the core circadian clock and clock‐related genes in crustaceans (Chesmore et al, 2016; Hunt, 2016; Min et al, 2017; O’Grady et al, 2016). The circadian rhythms of crustaceans are closely related to their immune function and the release of several molecular substances (Han et al, 2019; Mendoza‐Vargas et al, 2017). Immune parameters in the haemolymph of the Chinese mitten crab ( Eriocheir sinensis ), such as the total haemolymph count and phenoloxidase activity, have been examined for their bimodal patterns, according to the activities of some immune enzymes in the 24‐h diurnal cycle.…”

Section: Introductionmentioning

confidence: 99%

Comparative metabolomic analysis of Chinese mitten crab (Eriocheir sinensis) during the daily cycle

Zhang

et al. 2022

Aquaculture Research

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The circadian rhythm of aquatic animals has been a subject of research in a diverse range of studies. However, research on the circadian rhythm of the economically important crustacean Eriocheir sinensis is scarce although this species exhibits an obvious circadian rhythm. In this study, we applied liquid chromatography–mass spectrometry‐based metabolomics to identify key metabolites in the hepatopancreas of E. sinensis under the 24‐h circadian rhythm. Through comparative analysis of the metabolites obtained at different time points (06:00 vs. 12:00 h, 06:00 vs. 18:00 h, and 06:00 vs. 24:00 h), 431 differentially expressed metabolites were identified and classified. The Kyoto Encyclopedia of Genes and Genomes pathway analysis showed that the differentially expressed metabolites were enriched in some circadian rhythm‐related pathways, especially metabolic pathways related to nutrient digestion and absorption. Moreover, several pathways with high impact factors such as “Intestinal immune network for IgA production” were identified, and their functions were mostly related to immunity. This is the first study to identify the metabolites in the hepatopancreas of a crustacean through metabolomic analysis. It provides novel insights into the circadian rhythm of E. sinensis, which could benefit its culture and further increase its economic value.

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Circadian rhythms of melatonin in haemolymph and optic lobes of Chinese mitten crab (Eriocheir sinensis) and Chinese grass shrimp (Palaemonetes sinensis)

Cited by 13 publications

References 31 publications

CasEcR and CasMIH Genes in the Blue Crab, Callinectes sapidus: A Temporal Evaluation and Melatonin Effects

CasEcR and CasMIH Genes in the Blue Crab, Callinectes sapidus: A Temporal Evaluation and Melatonin Effects

Impact Analysis of Photoperiodic Disorder on the Eyestalk of Chinese Mitten Crab (Eriocheir sinensis) through High-Throughput Sequencing Technology

Comparative metabolomic analysis of Chinese mitten crab (Eriocheir sinensis) during the daily cycle

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