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dc.contributor.authorDurrant, J
dc.contributor.authorMichaelides, EB
dc.contributor.authorRupasinghe, T
dc.contributor.authorTull, D
dc.contributor.authorGreen, MP
dc.contributor.authorJones, TM
dc.date.available2016-09-08T08:23:30Z
dc.date.available2015-06-12
dc.date.available2015-06-12
dc.date.available2015-06-12
dc.date.available2015-06-12
dc.date.issued2015-07-16
dc.identifierpii: 1075
dc.identifier.citationDurrant, J., Michaelides, E. B., Rupasinghe, T., Tull, D., Green, M. P. & Jones, T. M. (2015). Constant illumination reduces circulating melatonin and impairs immune function in the cricket Teleogryllus commodus. PEERJ, 3 (7), https://doi.org/10.7717/peerj.1075.
dc.identifier.issn2167-8359
dc.identifier.urihttp://hdl.handle.net/11343/115970
dc.description.abstractExposure to constant light has a range of negative effects on behaviour and physiology, including reduced immune function in both vertebrates and invertebrates. It is proposed that the associated suppression of melatonin (a ubiquitous hormone and powerful antioxidant) in response to the presence of light at night could be an underlying mechanistic link driving the changes to immune function. Here, we investigated the relationship between constant illumination, melatonin and immune function, using a model invertebrate species, the Australian black field cricket, Teleogryllus commodus. Crickets were reared under either a 12 h light: 12 h dark regimen or a constant 24 h light regimen. Circulating melatonin concentration and immune function (haemocyte concentration, lytic activity and phenoloxidase (PO) activity) were assessed in individual adult crickets through the analysis of haemolymph. Constant illumination reduced melatonin and had a negative impact on haemocyte concentrations and lytic activity, but its effect on PO activity was less apparent. Our data provide the first evidence, to our knowledge, of a link between exposure to constant illumination and variation in haemocyte concentration in an invertebrate model, while also highlighting the potential complexity of the immune response following exposure to constant illumination. This study provides insight into the possible negative effect of artificial night-time lighting on the physiology of invertebrates, but whether lower and potentially more ecologically relevant levels of light at night produce comparable results, as has been reported in several vertebrate taxa, remains to be tested.
dc.languageEnglish
dc.publisherPEERJ INC
dc.rights.urihttps://creativecommons.org/licenses/by/4.0
dc.titleConstant illumination reduces circulating melatonin and impairs immune function in the cricket Teleogryllus commodus
dc.typeJournal Article
dc.identifier.doi10.7717/peerj.1075
melbourne.affiliation.departmentBio21
melbourne.affiliation.departmentSchool of BioSciences
melbourne.affiliation.departmentZoology
melbourne.source.titlePeerJ
melbourne.source.volume3
melbourne.source.issue7
dc.rights.licenseCC BY
melbourne.elementsid986982
melbourne.openaccess.pmchttp://www.ncbi.nlm.nih.gov/pmc/articles/PMC4558066
melbourne.contributor.authorDurrant, Joanna
melbourne.contributor.authorJones, Theresa
melbourne.contributor.authorRupasinghe, Thusitha
melbourne.contributor.authorTull, Dedreia
melbourne.contributor.authorGreen, Mark
dc.identifier.eissn2167-8359
melbourne.accessrightsOpen Access


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