Physiological Respones of Yeast （Debaryomyces hensenii）Infected Giant Freshwater Prawn, Macrobrachium rosenbergii.

• Main Authors: Hsu-Tung Yi, 徐東儀
• Other Authors: Winton Cheng
• Format: Others
• Language: zh-TW
• Published: 2006
• Online Access: http://ndltd.ncl.edu.tw/handle/40963123911368148896

碩士 === 國立屏東科技大學 === 水產養殖系 === 94 === This present study profiles the physiological metabolism of giant freshwater prawn (Macrobrachium rosenbergii) infected with yeast (Debaromyces hansenii). The relationship between the concentration of yeast in prawn hemolymph and physiological parameters, which including hemolymph osmolality, sodium, potassium, chloride, calcium, magnesium, ammonia, glucose, lactate, partial pressure of oxygen (pO2), partial pressure of carbon dioxide (pCO2), acid-base balance and the concentration of glycogen in muscle and hepatopancreas, were analyzed after prawn were injected with yeast at 3x105 cfu/ml. Hemolymph potassium, pH, pCO2 and glycogen of hepatocancreas content of prawn were no significantly different while the concentration of yeast in hemolymph were up to109 cfu/ml. The hemolymph osmolality, sodium and chloride of prawn were significantly decreased while the concentration of yeast in hemolymph was higher than 105 cfu/ml. The hemolymph calcium and magnesium of prawn were significant increased while the concentration of yeast in hemolymph were 109 cfu/ml and 107 cfu/ml, respectively. The hemolymph glucose and lactate content of prawn were significant increase while the prawn infected with yeast at more than 103 cfu/ml. The concentration of hemolymph ammonia was significantly increased following prawn infected with yeast at more than 103 cfu/ml. The hemolymph pO2 of prawn was decreased significantly while prawn infected with yeast at more than 104 cfu/ml. The glycogen of muscle content of prawn was significantly increased while the concentration of yeast in hemolymph was more than 109 cfu/ml. The regulation physiological metabolism of prawn was influenced after prawns infected with yeast due to some organs of prawn were damaged.