The effects of temperature and moulting on metal concentrations in decapod crustaceans

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dc.contributor.authorHill, Den_AU
dc.contributor.authorCresswell, Ten_AU
dc.contributor.authorSeery, Cen_AU
dc.contributor.authorTaylor, Jen_AU
dc.contributor.authorMahoney, Pen_AU
dc.date.accessioned2021-09-22T01:32:32Zen_AU
dc.date.available2021-09-22T01:32:32Zen_AU
dc.date.issued2019-09-03en_AU
dc.date.statistics2021-09-20en_AU
dc.description.abstractThe predicated rise in sea surface temperature due to climate change may affect the uptake and depuration of contaminants by crustaceans, affecting their survival and reproductive success. Decapod crustaceans are routinely used as bioindicators in environmental research as they are commonly found in aquatic environments, have an omnivorous diet and an important position in food webs. They may also be exposed to a wide range of contaminants present in aquatic ecosystems from urban and industrial processes. Both ambient temperature and moulting of the exoskeleton are known to influence contaminant regulation in these taxa. This study used the radiotracers 109Cd, 54Mn and 65Zn to investigate the internal concentrations of these metals in three ambient temperature treatments, 21 ˚C, 23 ˚C and 25 ˚C, based on predicted increases in sea surface temperatures for Australia. Spotted shore crabs (Paragrapsus laevis) were exposed to two pulses of a mixed radiotracer solution, each followed by a depuration stage of five days. We found no significant effect of ambient temperature on uptake or depuration rates of the three metals. However, across temperatures the rate of uptake was significantly higher than that of depuration for 54Mn and 65Zn. Of 21 crabs, 15 moulted throughout the study and no significant difference was found in the amount of metal taken up pre and post-moult. However, there was a significant difference in whole-body metal burden between non-moulted crabs and moulted crabs immediately after moult. It was determined there was no significant difference in internal metal concentrations of 109Cd, 54Mn and 65Zn over the elevated sea surface temperatures predicted by climate change models and that moulting only significantly affected depuration of the metals.en_AU
dc.identifier.citationHill, D., Cresswell, T., Seery, C., Taylor, J. & Mahoney, P. (2019). The effects of temperature and moulting on metal concentrations in decapod crustaceans. Paper presented at the ANSTO Young Researchers' Conference, Lucas Heights, NSW, Australia, 3 Sep 2019. Retrieved from: https://events01.synchrotron.org.au/event/98/book-of-abstracts.pdfen_AU
dc.identifier.conferencenameANSTO Young Researchers' Conferenceen_AU
dc.identifier.conferenceplaceLucas Heights, NSWen_AU
dc.identifier.conferencestartdate3 September 2019en_AU
dc.identifier.urihttps://events01.synchrotron.org.au/event/98/book-of-abstracts.pdfen_AU
dc.identifier.urihttps://apo.ansto.gov.au/dspace/handle/10238/11787en_AU
dc.language.isoenen_AU
dc.publisherAustralian Nuclear Science and Technology Organisationen_AU
dc.subjectMetalsen_AU
dc.subjectPollutionen_AU
dc.subjectClimatic changeen_AU
dc.subjectDecapodsen_AU
dc.subjectCrustaceansen_AU
dc.subjectMoltingen_AU
dc.titleThe effects of temperature and moulting on metal concentrations in decapod crustaceansen_AU
dc.typeConference Abstracten_AU
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