Effect of ¥â-glucan on immune parameters in the Manila clam Ruditapes philippinarum
Ki-Woong Nam and Kyung-il Park
Faculty of Applied Marine Biosciences, Kunsan National University, Gunsan 573-701, Republic of Korea

¥â-Glucan is a polysaccharide that is widely used as an adductive in fish feed to facilitate immune stimulation. This study aimed to investigate the effect of ¥â-glucan on immune responses in the Manila clam Ruditapes philippinarum. For this purpose, three groups of R. philippinarum were exposed to 0%, 0.1%, or 1% ¥â-glucan in sea water for 1 hr/day for 2 weeks using an immersion method. Thereafter, two immune parameters-phagocytic rate and antibacterial activity-were measured. R. philippinarum exposed to 1% ¥â-glucan showed an approximate 30% significant increase in phagocytic rate. In addition, ¥â-glucan significantly limited the growth of the pathogenic bacteria Vibrio tapetis, V. parahaemolyticus, and V. ordalii. Moreover, the mortality rates of ¥â-glucan-treated clams decreased during a 17-day experiment. Our study suggests that treatment with ¥â-glucan significantly increases the immune responses in R. philippinarum, and that immersion is a simple and effective method for immune stimulation in this species.

  
v31_2_123-127.pdf (460.1K), Down : 135, 2015-07-16 14:53:30

   

»ç¹«±¹ & ÆíÁý±¹ : Ãæ³² ¾Æ»ê½Ã ½Åâ¸é ¼øõÇâ·Î 22 ÀÚ¿¬°úÇдëÇР3317È£ / Tel: 041-530-3040 / E-mail : malacol@naver.com