{"refrec":{"BRefID":238041,"RR":"<b>Claes, J.M.; Nilsson, D.E.; Straube, N.; Collin, S.P.; Mallefet, J.</b> (2014). Iso-luminance counterillumination drove bioluminescent shark radiation. <i>NPG Scientific Reports 4(4328)</i>: 7 pp. <a href=\"http://dx.doi.org/10.1038/srep04328\" target=\"_blank\">dx.doi.org/10.1038/srep04328</a>","BEntID":229728,"PublicFlag":1,"CheckedFlag":1,"wosflag":1,"vabbflag":1,"RefStringPartII":". <i>NPG Scientific Reports 4(4328)</i>: 7 pp. <a href=\"https://dx.doi.org/10.1038/srep04328\" target=\"_blank\">https://dx.doi.org/10.1038/srep04328</a>","DocTypID":8,"DocType":"Journal article","MarineFlag":0,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Claes, J.M.; Nilsson, D.E.; Straube, N.; Collin, S.P.; Mallefet, J.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Claes, J.M. <i>et al.</i>","Englishabstract":"Counterilluminating animals use ventral photogenic organs (photophores) to mimic the residual downwelling light and cloak their silhouette from upward-looking predators. To cope with variable conditions of pelagic light environments they typically adjust their luminescence intensity. Here, we found evidence that bioluminescent sharks instead emit a constant light output and move up and down in the water column to remain cryptic at iso-luminance depth. We observed, across 21 globally distributed shark species, a correlation between capture depth and the proportion of a ventral area occupied by photophores. This information further allowed us, using visual modelling, to provide an adaptive explanation for shark photophore pattern diversity: in species facing moderate predation risk from below, counterilluminating photophores were partially co-opted for bioluminescent signalling, leading to complex patterns. In addition to increase our understanding of pelagic ecosystems our study emphasizes the importance of bioluminescence as a speciation driver.","AbstractOtherLang":null,"BibLvlCode":"AS","StandardTitle":"Iso-luminance counterillumination drove bioluminescent shark radiation","OrigTitleLangCode":"en","OrigTitleLangCodeExtended":"eng","OrigTitleLangID":15,"DateLastModified":{"date":"2024-12-10 01:33:17.368041","timezone_type":1,"timezone":"+01:00"},"UserAccessRight":null,"UserAccID":null,"AuthorKeywords":null,"OtherDescriptors":null,"Notes":null,"AnaPub":2014,"MonPub":null,"DateUpdate":"2014-05-22","DateCreate":"2014-05-18","SecASFANote":null,"ConfID":null,"PeerRev":1,"VlizCoreFlag":1,"WoScode":"WOS:000332452700002","VABBcode":null,"OpenAcc":1,"DOI":"10.1038/srep04328"},"refs":null,"anarec":{"AnaID":238041,"PubliDate":2014,"Pagination":"7 pp","XtraPublOfAnaID":null,"ISBN":null,"Volume":"4","Issue":"4328","BRefMon":null,"BRefMonRR":null,"BRefXtra":null,"BRefXtraRR":null,"SerBRefID":208093,"SerRR":"Scientific Reports (Nature Publishing Group). 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