Journal article
Effects of dietary phospholipid and highly unsaturated fatty acid on the gonadal development, tissue proximate composition, lipid class and fatty acid composition of precocious Chinese mitten crab, Eriocheir sinensis
Aquaculture Nutrition, Vol.16(1), pp.25-36
2010
Abstract
Precocious puberty is a major constraint to the economical rearing Eriocheir sinensis farming. Although dietary phospholipid (PL) and highly unsaturated fatty acids (HUFA) reportedly enhanced ovarian development in normal adult E. sinensis, it had opposite effects of reducing precocity in juveniles. This study investigated the effects of dietary PL and HUFA on survival, gonadal development and biochemical composition of precocious E. sinensis. Two diets with PL and HUFA supplementation (diet A) and deficient (diet B) were formulated and fed to precocious E. sinensis. Although no significant differences were found on survival and gonadosomatic index of crabs fed both diets, crabs fed diet B had significantly higher hepatosomatic index and hepatopancrean lipid content than crabs fed diet A. The percentages, 14:0, 18:1n-9, 20:5n-3 and 22:6n-3, in hepatopancreas, muscle and gonads were positively correlated to the diets. Interestingly, the crabs fed diet B accumulated significantly higher 18:2n-6 in gonads and muscle than those fed diet A. Furthermore, substantially higher 20:4n-6 was detected in the gonad and muscle than in the diets. These results suggested that dietary PL and HUFA had limited effects on male gonad biochemical composition. Meanwhile, the precocious E. sinensis may be capable of negating the negative effects of HUFA deficiency by enhanced tissue 18:2n-6 accumulation and converting 18:2n-6 to 20:4n-6. © 2008 Blackwell Publishing Ltd.
Details
- Title
- Effects of dietary phospholipid and highly unsaturated fatty acid on the gonadal development, tissue proximate composition, lipid class and fatty acid composition of precocious Chinese mitten crab, Eriocheir sinensis
- Authors
- X Wu (Author) - Shanghai Ocean University, ChinaG Chang (Author) - Shanghai Ocean University, ChinaY Cheng (Author) - Shanghai Ocean University, ChinaC Zeng (Author) - James Cook UniversityPaul C Southgate (Author) - James Cook UniversityJ Lu (Author) - Hefei University of Technology, China
- Publication details
- Aquaculture Nutrition, Vol.16(1), pp.25-36
- Publisher
- Wiley-Blackwell Publishing Ltd.
- Date published
- 2010
- DOI
- 10.1111/j.1365-2095.2008.00637.x
- ISSN
- 1353-5773
- Organisation Unit
- School of Science and Engineering - Legacy; Australian Centre for Pacific Islands Research; University of the Sunshine Coast, Queensland; School of Science, Technology and Engineering
- Language
- English
- Record Identifier
- 99449380902621
- Output Type
- Journal article
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