Sjannie Lefevre presents 'To breathe or not to breathe: Partitioning of oxygen uptake in air-breathing fish,' March 8

Friday, March 8, 3:30-4:45 p.m.
ConocoPhillips Integrated Science Building, Room 120

The Biological Sciences Department is pleased to have as our speaker Sjannie Lefevre from the University of Oslo. The topic of discussion will be "To breathe or not to breathe: Partitioning of oxygen uptake in air-breathing fish."

About the talk:
A variety of air-breathing fish species are currently being farmed in tropical areas of the world, such as Africa and Asia. Given their ability to breathe air, they have a unique advantage when faced with aquatic hypoxia, which is why they can be farmed in the simple ponds systems without aeration and recirculation, which are often used in these areas. Although air-breathing is obviously necessary to survive during hypoxia, it can be discussed if it would not be energetically beneficial for the fish (and thereby for the farmer) if oxygen levels were increased. In an attempt to answer this question, I have investigated the importance of air-breathing in a variety of situations in two Vietnamese fish species, using among other methods a state-of-the-art two-phase respirometer and acoustic telemetry.

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