{"refrec":{"BRefID":348288,"RR":"<b>Gushi, M.; Ishibashi, H.; Takayama, K.; Yamashiro, H.; Takeuchi, I.</b> (2021). Changes in the colour and photosynthetic efficiency of the hermatypic coral <i>Acropora tenuis</i> exposed to Irgarol 1051 at 30 °C seawater temperature. <i>Regional Studies in Marine Science 47</i>: 101957. <a href=\"https://dx.doi.org/10.1016/j.rsma.2021.101957\" target=\"_blank\">https://dx.doi.org/10.1016/j.rsma.2021.101957</a>","BEntID":344982,"PublicFlag":1,"CheckedFlag":0,"wosflag":1,"vabbflag":0,"RefStringPartII":". <i>Regional Studies in Marine Science 47</i>: 101957. <a href=\"https://dx.doi.org/10.1016/j.rsma.2021.101957\" target=\"_blank\">https://dx.doi.org/10.1016/j.rsma.2021.101957</a>","DocTypID":8,"DocType":"Journal article","MarineFlag":1,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Gushi, M.; Ishibashi, H.; Takayama, K.; Yamashiro, H.; Takeuchi, I.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Gushi, M. <i>et al.</i>","Englishabstract":"Besides global warming, coral reefs face various anthropogenic threats, including watershed-based and marine-based contaminants. Recently, Irgarol 1051, a photosystem II herbicide, has been introduced as a “booster” agent in copper-based antifouling paints after global ban of tributyltin (TBT) in January 2008. Irgarol is considered to pose a potential risk to corals. In this study, a clone of <i>Acropora tenuis</i> separated from the colony collected from Sesoko Island, Okinawa, southern Japan, was exposed to 1.0 μg L<sup>−1</sup> Irgarol at 27.5 °C and 30.0 °C (higher than the temperature in the warmest month in southern Japan) for 7 d. The coral colour was converted to RGB values, ranging from 0 (darkest) to 255 (brightest). The RGB values under both temperature treatments slightly decreased in the control (no herbicide exposure), but those in both 27.5 °C and 30.0 °C Irgarol treatments increased after day 3. The maximum effective quantum yield (ΔF/Fm′) slightly increased in both 27.5 °C and 30.0 °C control treatments, but decreased in 27.5 °C and 30.0 °C Irgarol treatments after day 1. The exposure to 1.0 μg L<sup>−1</sup> Irgarol induced significant differences in RGB values and ΔF/Fm′ compared with those in the control at the same temperature. Regarding the temperature difference (27.5 °C vs. 30.0 °C), no significant differences in RGB values and ΔF/Fm′ were detected in both control and Irgarol treatments. Our results revealed no significant combined effect of Irgarol exposure and 30.0 °C on <i>A. tenuis</i>. These findings suggest that 30.0 °C is a normally inhabitable environmental temperature for <i>A. tenuis</i>. The bleaching of <i>A. tenuis</i> is more likely caused by the exposure to 1.0 μg L<sup>−1</sup> Irgarol than by the exposure to high seawater temperature of 30.0 °C.","AbstractOtherLang":null,"BibLvlCode":"AS","StandardTitle":"Changes in the colour and photosynthetic efficiency of the hermatypic coral <i>Acropora tenuis</i> exposed to Irgarol 1051 at 30 °C seawater temperature","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":"Substance; Acropora tenuis; Coral colour; Hermatypic coral; High seawater temperature; Photosynthetic efficiency","OtherDescriptors":null,"Notes":null,"AnaPub":2021,"MonPub":null,"DateUpdate":"2021-12-20","DateCreate":"2021-12-16","SecASFANote":null,"ConfID":null,"PeerRev":1,"VlizCoreFlag":1,"WoScode":"WOS:000697015300003","VABBcode":null,"OpenAcc":0,"DOI":"10.1016/j.rsma.2021.101957"},"refs":null,"anarec":{"AnaID":348288,"PubliDate":2021,"Pagination":"101957","XtraPublOfAnaID":null,"ISBN":null,"Volume":"47","Issue":null,"BRefMon":null,"BRefMonRR":null,"BRefXtra":null,"BRefXtraRR":null,"SerBRefID":259094,"SerRR":"Regional Studies in Marine Science. 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