Part one of term paper
Introduction The purpose of this lab experiment was to observe and measure the effect of depleting oxygen content in water on the opercular beats and on the gulp trips of Trichogaster trichopterus. Oxygen is an essential element in the daily lives of most organisms. A continuous supply of oxygen is needed for all organisms for cellular res ...

Part two of term paper
... terrestrial animals do not have any problems obtaining sufficient oxygen amounts for cellular respiration. Aquatic animals, however, obtain oxygen from a different aquatic respiratory medium---water. The dissolved oxygen concentrations in an aquatic environment is much lower than the 21% oxygen concentration available in the atmosphere (Barstow et al. 1999), hence special problems pertaining to the acquisition of sufficient amounts of oxygen arise for aquatic organisms---namely fish. Fishes hav ...