Date of Award
Master of Science
Lepomis macrochirus (bluegill) were exposed, in small containers, to homogenates of Lophopodella carteri, an ectoproct that contains substances toxic to gilled vertebrates. Blood pH, pco2, and po2 were determined with a blood gas analyzer. Blood carbonic anhydrase activity was measured manometrically.
The ectoproct toxins caused significant decreases in blood pH and po2 and a significant increase in blood pco2 and carbonic anhydrase activity. It is proposed that these changes in blood properties were initiated by a film of mucus covering the gill epithelium. The secretion of mucus is thought to be a response to irritation of the gills by the ectoproct toxins.
May, Robert Allen, "The effects of the toxins of Lophopodella carteri (ectoprocta) on the blood gas properties of the bluegill Lepomis macrochirus" (1974). Master's Theses. 372.