2006
DOI: 10.1590/s1679-62252006000400007 View full text |Buy / Rent full text
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Abstract: Low dissolved oxygen levels in the water (hypoxia) can be provoked by oxygen consumption by fish and other organisms, organic matter decomposition, phytoplankton blooms, and temperature increase. The objective of the present study was to investigate Na + , Cl -, K + , and ammonia fluxes in silver catfish (Rhamdia quelen) exposed to different dissolved oxygen levels. Juveniles (9 ± 1g) maintained at 6.0 mg.L -1 dissolved oxygen were transferred to four 40 L aquaria with different dissolved oxygen levels (in mg.… Show more

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