TY - JOUR
T1 - The relative importance of skin oxygen uptake in the naturally buried plaice, Pleuronectes platessa, exposed to graded hypoxia.
AU - Steffensen, J F
AU - Lomholt, J P
AU - Johansen, K
N1 - Keywords: Animals; Anoxia; Fishes; Gills; Oxygen Consumption; Skin
PY - 1981
Y1 - 1981
N2 - Cutaneous O2-uptake has been estimated in plaice, Pleuronectes platessa, naturally buried in sediment as the difference between total O2-uptake, measured in a flow-through respirometer, and branchial O2-uptake calculated from direct and continuous recordings of gill water flow and O2-extraction from the ventilatory current. At conditions of aerated water cutaneous O2-uptake made up 27% of total uptake. During exposure to hypoxic water, cutaneous O2-uptake declined less than O2-uptake across the gills. Hence the relative importance of cutaneous O2-uptake increased with progressive hypoxia, making up 37% of total at a water PO2 of 40 mm Hg. Factors are discussed which may affect the level of cutaneous O2-uptake at changing conditions of ambient O2-availability.
AB - Cutaneous O2-uptake has been estimated in plaice, Pleuronectes platessa, naturally buried in sediment as the difference between total O2-uptake, measured in a flow-through respirometer, and branchial O2-uptake calculated from direct and continuous recordings of gill water flow and O2-extraction from the ventilatory current. At conditions of aerated water cutaneous O2-uptake made up 27% of total uptake. During exposure to hypoxic water, cutaneous O2-uptake declined less than O2-uptake across the gills. Hence the relative importance of cutaneous O2-uptake increased with progressive hypoxia, making up 37% of total at a water PO2 of 40 mm Hg. Factors are discussed which may affect the level of cutaneous O2-uptake at changing conditions of ambient O2-availability.
M3 - Journal article
C2 - 7268219
SN - 1569-9048
VL - 44
SP - 269
EP - 275
JO - Respiratory Physiology & Neurobiology
JF - Respiratory Physiology & Neurobiology
IS - 3
ER -