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• W2739997332 abstract "MEPS Marine Ecology Progress Series Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout the JournalEditorsTheme Sections MEPS 579:67-79 (2017) - DOI: https://doi.org/10.3354/meps12275 Short larval exposure to low level of copper has long-lasting latent effects on juvenile performance in the sea urchin Evechinus chloroticus Agnes M. Rouchon*, Nicole E. Phillips School of Biological Sciences, Victoria University of Wellington, Wellington 6012, New Zealand *Corresponding author: agnes.rouchon@gmail.com ABSTRACT: Exposure to environmental stressors such as pollutants early in life may have latent effects visible only in later life stages. Sea urchin Evechinus chloroticus larvae were exposed briefly (2 d) to 4 treatments of low levels of copper (2 to 10 µg l-1). Juveniles were re-exposed to a further short pulse of copper (10 µg l-1) to investigate potential resistance to pollution. No major direct effects of larval exposure to copper were observed on larval growth, survival or settlement success. However, complex latent effects started to appear from 8 d post-settlement onwards in individuals exposed as larvae to the highest concentration of copper. Juveniles had strongly impaired growth from 8 to 25 d post-settlement, with average radial length and spine to body ratio decreasing by 24% for both variables. In addition, juveniles previously exposed to the highest tested concentration of copper as larvae were more vulnerable to a subsequent pulse, with up to 4 times higher mortality in groups previously exposed to copper during the larval stage. On the other hand, survivors had a 35% higher growth rate than naive juveniles (i.e. no previous exposure). These results demonstrate that exposure to a concentration of copper similar to that found in many polluted bays and harbours (10 µg l-1) for as little as 48 h in early life impacts juvenile performance and leaves them more vulnerable to a subsequent exposure. This highlights the importance of considering latent effects when evaluating the impacts of pollution. KEY WORDS: Latent effects · Copper toxicity · Sea urchin · Early life stages · Evechinus chloroticus Full text in pdf format Supplementary material PreviousNextCite this article as: Rouchon AM, Phillips NE (2017) Short larval exposure to low level of copper has long-lasting latent effects on juvenile performance in the sea urchin Evechinus chloroticus. Mar Ecol Prog Ser 579:67-79. https://doi.org/10.3354/meps12275 Export citation RSS - Facebook - Tweet - linkedIn Cited by Published in MEPS Vol. 579. Online publication date: September 14, 2017 Print ISSN: 0171-8630; Online ISSN: 1616-1599 Copyright © 2017 Inter-Research." @default.
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• W2739997332 date "2017-09-14" @default.
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• W2739997332 title "Short larval exposure to low level of copper has long-lasting latent effects on juvenile performance in the sea urchin Evechinus chloroticus" @default.
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