Ability of salmon growth hormone to accelerate somatic growth of juvenile abalone Haliotis discus hannai
Article first published online: 3 AUG 2008
© 2008 Japanese Society of Fisheries Science
Volume 74, Issue 4, pages 860–866, August 2008
How to Cite
MORIYAMA, S., TASHIRO, K., FURUKAWA, S. and KAWAUCHI, H. (2008), Ability of salmon growth hormone to accelerate somatic growth of juvenile abalone Haliotis discus hannai. Fisheries Science, 74: 860–866. doi: 10.1111/j.1444-2906.2008.01600.x
- Issue published online: 3 AUG 2008
- Article first published online: 3 AUG 2008
- Received 26 November 2007. Accepted 21 January 2008.
- growth hormone;
- salmon pituitary
ABSTRACT: The ability of salmon growth hormone (sGH) to accelerate the somatic growth of juvenile abalone Haliotis discus hannai by immersion was examined. After immersion for one hour into a sGH-rich solution at a concentration of 30 mg/L, the sGH immunoreactivity in the body fluid of abalone was maximal after one day, and levels were still detectable at two days. No immunoreactivity was observed in the control group. Following immersion for one hour at one or two-week intervals for 120 weeks into the sGH-rich solution at 30 mg/L, the sGH-immersed abalone exhibited a significant increase in shell length and body weight. On the other hand, abalone immersed into a salmon prolactin (sPRL)-rich solution at 30 mg/L for one hour showed a lower increase in both shell length and body weight than the sGH-immersed abalone. No increases in shell length and body weight were observed in either the bovine serum albumin-immersed abalone or untreated controls. These results provide evidence that sGH can be transported from ambient water into the circulatory system of abalone, and can subsequently improve the somatic growth of juveniles.