| 摘要 |
PROBLEM TO BE SOLVED: To provide a method and an apparatus for anesthetizing a seafood safely for a long time and practically simple under an environment containing dissolved carbon dioxide.SOLUTION: By bringing oxygen air bubbles containing gaseous oxygen into contact with the surfaces of the gill-epithelial cell membrane of a seafood, a partial pressure difference of [gaseous oxygen partial pressure]-[oxygen gas partial pressure in capillary vessels of gills] exceeding [partial pressure of oxygen dissolved in water]-[partial pressure of oxygen dissolved in capillary vessels of gills], so that the quantity of oxygen to be taken into the gill sheet capillary vessels is prominently increased. As a result, the respiratory failure, which might occur under a voluntary breathing movement suppressed by an anesthetization, is avoided so that a long-term carbon-dioxide anesthetization can be performed under a water temperature (about 20°C), at which the seafood is usually handled. |
