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Skin permeability of the amphibious mangrove rivulus Kryptolebias marmoratus in response to emersion

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dc.contributor.advisor Wright, Patricia
dc.contributor.author Heffell, Quentin
dc.date.accessioned 2016-01-15T14:16:29Z
dc.date.available 2016-01-15T14:16:29Z
dc.date.copyright 2016-01
dc.date.created 2016-01-11
dc.date.issued 2016-01-15
dc.identifier.uri http://hdl.handle.net/10214/9491
dc.description.abstract The skin of the amphibious fishes is known to be a physiologically important tissue for maintaining homeostasis during emersion. I tested the hypothesis that skin permeability would be altered to maintain water balance during salinity acclimation and/or emersion. Osmotic permeability of the skin was assessed using 3H2O fluxes, and bulk osmotic flow was quantified using a novel dye-dilution technique. No regional variability between the dorsal and ventral skin region was found, although fish more often positioned themselves on the ventral surface when emersed. Hypersaline acclimation resulted in a decrease in 3H2O influx across the skin relative to hyposaline acclimation. Acute emersion (1 day) induced a decrease in bulk osmotic water loss in hypersaline-acclimated fish, whereas prolonged emersion (7 days) resulted in an increase in 3H2O influx. These findings suggest that K. marmoratus alter skin permeability to maximize water uptake and minimize water loss while emersed in hypersaline conditions. en_US
dc.language.iso en en_US
dc.subject Osmoregulation en_US
dc.subject Membrane transport en_US
dc.subject Amphibious fish en_US
dc.subject Skin permeability en_US
dc.title Skin permeability of the amphibious mangrove rivulus Kryptolebias marmoratus in response to emersion en_US
dc.type Thesis en_US
dc.degree.programme Integrative Biology en_US
dc.degree.name Master of Science en_US
dc.degree.department Department of Integrative Biology en_US
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