Melatonin and its possible role in mediating seasonal metabolic changes of Antarctic krill, Euphausia superba

Pape, Carsten; Teschke, Mathias; Meyer, Bettina

doi:10.1016/j.cbpa.2008.02.001

Cited by 32 publications

(7 citation statements)

References 37 publications

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“…The hormone melatonin does not seem to play a role in the control of seasonal metabolic changes in krill (Pape et al 2008), even though it is involved in vertebrate and numerous nonvertebrate taxa in the transduction of photoperiodic information (e.g. Tilden et al 2001).…”

Section: Reduction In Physiological Function In Adultsmentioning

confidence: 99%

The overwintering of Antarctic krill, Euphausia superba, from an ecophysiological perspective

2011

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A major aim of this review is to determine which physiological functions are adopted by adults and larvae to survive the winter season with low food supply and their relative importance. A second aim is to clarify the extent to which seasonal variation in larval and adult krill physiology is mediated by environmental factors with a strong seasonality, such as food supply or day light. Experimental studies on adult krill have demonstrated that speciWc physiological adaptations during autumn and winter, such as reduced metabolic rates and feeding activity, are not caused simply by the scarcity of food, as was previously assumed. These adaptations appear to be inXuenced by the local light regime. The physiological functions that larval krill adopt during winter (reduced metabolism, delayed development, lipid utilisation, and variable growth rates) are, in contrast to the adults, under direct control by the available food supply. During winter, the adults often seem to have little association with sea ice (at least until early spring). The larvae, however, feed within sea ice but mainly on the grazers of the ice algal community rather than on the algae themselves. In this respect, a miss-match in timing of the occurrence of the last phytoplankton blooms in autumn and the start of the sea ice formation, as has been increasingly observed in the west Antarctic Peninsula (WAP) region, will impact larval krill development during winter in terms of food supply and consequently the krill stock in this region.

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Section: Reduction In Physiological Function In Adultsmentioning

confidence: 99%

The overwintering of Antarctic krill, Euphausia superba, from an ecophysiological perspective

2011

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“…Pape and colleagues (85) reported the absence of a daily variation in melatonin levels in the eyestalks and hemolymph of the Antarctic krill Euphausia superba. Variations in melation levels were not seen in animals collected in summer (6.1 ρg.eyestalk -1 and 2.4 ρg.ml -1 ) or in winter (6.3 ρg.eyestalk -1 and 2.9 ρg.ml -1 ).…”

Section: Melatonin Variations In Crustaceansmentioning

confidence: 99%

Antioxidant defense system rhythms in crustaceans and possible roles for melatonin

Maciel¹

2010

Front Biosci

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Animals in their habitats are subject to many cyclical patterns for different environmental parameters, resulting in selective pressure to develop biological rhythms for metabolism. To avoid oxidative stress, a rhythmic variation in the antioxidant defense system (ADS) should be associated with aerobic metabolic rhythms. In this review, we summarize and discuss the latest findings on rhythmic variations of the ADS in different tissues of crustaceans, as well as possible mechanisms for their regulation. In vertebrates, melatonin has been shown to be an important molecule in the regulation of the ADS and to be a high-capacity scavenger of reactive oxygen species. Given that this indoleamine has been identified in crustaceans, we also discuss the possible implications of this molecule in crustacean ADS regulation.

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“…Melatonin has also been observed in the hemolymph, eyestalks, and nervous system of crustaceans like Carcinus maenas (Vivien‐Roels and Pevet, ), Penaeus monodon (Withyachumnarnkul et al, ), Procambarus clarkii (Agapito et al, ; Balzer et al, ), Uca pugilator (Tilden et al, ), Macrobrachium rosenbergii (Withyachumnarnkul et al, ), Astacus fluviatilis (Meyer‐Rochow, ), Saduria entomon (Meyer‐Rochow, ), Neohelice granulata (Maciel et al, ), and Euphausia superba (Pape et al, ).…”

Section: Discovery and Quantification Of Melatonin In Crustaceansmentioning

confidence: 99%

“…Melatonin has been identified in a various species by use of many detection methods. Melatonin was quantified by using HPLC and ELISA in the hemolymph of Antarctic krill, E. superba (Pape et al, ). Radioimmunoassay (RIA) was performed to quantify the levels of melatonin in the optic lobes of crab, N. granulata (Maciel et al, ) and in the eyestalks and hemolymph of freshwater crayfish, P. clarkii (Agapito et al, ).…”

Section: Discovery and Quantification Of Melatonin In Crustaceansmentioning

confidence: 99%

What Do We (Need to) Know About the Melatonin in Crustaceans?

2013

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Melatonin (N-acetyl-5-methoxy-tryptamine) was first discovered from the bovine pineal gland extract in 1958. Since then, its synthesis, metabolism, physiological, and patho-physiological functions are well studied in vertebrates; there is an increasing recognition of melatonin in invertebrates and especially in crustaceans. The presence of melatonin in crustaceans is now well documented and some functional aspects in the framework of crustacean biology have been demonstrated. This review aims at giving a comprehensive overview of the various physiological events regulated by this pleiotropic hormone. Topics include: glucose homeostasis, regulation of reproduction, molting, limb regeneration, and antioxidant properties. Finally, perspectives on current and possible research are offered.

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Melatonin and its possible role in mediating seasonal metabolic changes of Antarctic krill, Euphausia superba

Cited by 32 publications

References 37 publications

The overwintering of Antarctic krill, Euphausia superba, from an ecophysiological perspective

The overwintering of Antarctic krill, Euphausia superba, from an ecophysiological perspective

Antioxidant defense system rhythms in crustaceans and possible roles for melatonin

What Do We (Need to) Know About the Melatonin in Crustaceans?

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