Journal of Tropical Oceanography ›› 2011, Vol. 30 ›› Issue (1): 144-151.doi: 10.11978/j.issn.1009-5470.2011.01.144cstr: 32234.14.j.issn.1009-5470.2011.01.144

• Marine biology • Previous Articles     Next Articles

Fatty acid composition of wild female Penaeus monodon broodstock from the northern South China Sea during ovarian development

HUANG Jian-hua, YANG Qi-bin, LIN Hei-zhao, CHEN Xu, ZHOU Fa-lin, WEN Wei-geng, JIANG Shi-gui   

  1. Aquaculture and Biotechnology Division, South China Sea Fisheries Research Institute, CAFS, Guangzhou 510300, China
  • Received:2009-12-29 Revised:2010-09-06 Online:2011-03-17 Published:2011-03-16
  • Contact: 江世贵。E-mail: jiangsg@21cn.com
  • About author:黄建华(1972—), 男, 湖南省常宁市人, 副研究员, 主要从事水产基础生物学研究。E-mail: hjh210440@sina.com.cn
  • Supported by:

    国家高技术研究发展计划(2006AA10A406); 农业科技成果转化项目(2009326048); 国家支撑计划(2006BAD01A13, 2007BAD29B01-9); 公益性行业(农业)专项(nyhyzx07-042); 广东省科技计划项目(2006A20204001,2007A020400001); 广东省科技兴海项目(A200601A04, A200701A01),广东省海洋渔业推广专项(A200899A06,A200901B02)

Abstract:

Fatty acid (FA) composition of ovary, midgut gland and muscle of wild female Penaeus monodon from the northern South China Sea in different stages of ovary development was determined. Results showed that the main FAs were 16:0, 16:1n-7, 18:0, 18:1n-9, 20:4n-6 (arachidonic acid, ARA), 20:5n-3(eicosapntemacnioc acid, EPA) and 22:6n-3 (docosahex-aenoic acid, DHA). During sexual maturation, the percentage of 16:0 and total saturated FAs (saturation fatty acid, ∑SFA) in midgut gland increased fluctuantly. The percentage of 12:0, 14:0, 16:0, 18:0, 20:0 and ∑SFA in ovary increased (except for 22:0), and the highest percentage presented in Stage V and recovered to the level of immature stage after spawning. The per-centage of 14:0, 16:0, 18:0, 20:0 and ∑SFA in muscle decreased from Stage I to Stage IV or V, and increased after spawning. During sexual maturation, the percentage of 16:1n-7, 18:1n-9 and ∑MUFA (mono unsaturation fatty acid) in midgut gland, ovary, and muscle increased fluctuantly, and the highest percentage presented in Stage V. The percentage of 18: 2n-6, 20:4n-6 (ARA) and n-6 FA increased from Stage I to Stage III and decreased to the lowest level in Stage V. The percentage of 20:5n-3(EPA), 22:6n-3(DHA) and n-3 FA increased from Stage I to Stage III, decreased to the lowest level in Stage VI (except for EPA and n-3 FA), and decreased to the lowest level in Stage IV or V and increased after spawning. The ratios of DHA/EPA, n-3/n-6, and ∑PUFA (poly unsaturation fatty acid)/SFA increased fluctuantly from Stage I to Stage III or IV and decreased to the lowest level in Stage VI or recovered to the level of immature stage (Stage I) after spawning. The ratios of DHA/EPA, ∑n-3/n-6, and ∑PUFA/SFA in midgut gland were 0.5-1, 0.8-1.5, 0.29-0.53, respectively. Our results showed that the FA com-position in tissues of wild P. monodon broodstocks presented the balance between n-3 and n-6 FA families, ∑PUFA and ∑SFA, and EPA and DHA, and the ratio of ∑SFA:∑MUFA:∑PUFA was 35%:30%:35%. These results provide reference for making up the artificial diets for P. monodon broodstocks.

Key words: wild Penaeus monodon, ovary development, ovary, midgut gland, muscle, fatty acids