The immune system in black tiger shrimp, Penaeus monodon Fabricius :
V. Effect of water temperature, DO and pH on immuno-physiological
functions in black tiger shrimp (Penaeus monodon Fabricius)
ระบบภูมิคุ้มกันโรคในกุ้งกุลาดำ : V. ผลของอุณหภูมิ ปริมาณออกซิเจนละลายน้ำและความ
เป็นกรด-ด่างของน้ำต่อระบบภูมิคุ้มกันโรคและองค์ประกอบเลือดในกุ้งกุลาดำ
Kidchakan Supamattaya, Assoc. Prof., D. of Aquatic Sci., F. of Natural Resources, PSU.
Jareeporn Ruangsri, Aquatic Animal Health Research Center, F. of Natural Resources, PSU.
Suphada Kiriratnikom, Aquatic Animal Health Research Center, F. of Natural Resources, PSU.
Naraid Suanyuk, Aquatic Animal Health Research Center, F. of Natural Resources, PSU.
Corresponding e-mail : skidchak@ratree.psu.ac.th
Grant : BIOTEC
Published : Songklanakarin J Sci Technol 2000, 22(Suppl.) : 605-613
Key words : pH, DO, temperature, hemocyte, black tiger shrimp, immune system,
Penaeus monodon
Effects of some environmental factors on blood parameters change and the immune system
in black tiger shrimp (Penaeus monodon) were investigated. The results showed that total hemocyte count and phenoloxidase activating system were not effected at pH 6.0 However, clearance ability of hemolymph was reduced in comparison with the control group which was kept at pH 7.8. Low concentration of dissolved oxygen at 0.9-1.2 ppm resulted in reduction of total hemocyte count, pheno-loxidase activity, clearance ability and phagocytic activity when compared with normal dissolved oxygen value at 5.0-5.8 ppm. The reduction of the above parameters was also found in shrimp kept
at 25oC in comparison with the control group at 30oC.
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