Salinity can change the lipid composition of adult Chinese mitten crab after long-term salinity adaptation

Long, Xiaowen, Wu, Xugan, Zhu, Shaicheng, Ye, Haihui, Cheng, Yongxu, and Zeng, Chaoshu (2019) Salinity can change the lipid composition of adult Chinese mitten crab after long-term salinity adaptation. PLoS ONE, 14 (7). e0219260.

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Abstract

The Chinese mitten crab (Eriocheir sinensis) is an euryhaline crustacean, whose adults migrate downstream to estuaries for reproduction. Lipids are believed to be involved in salinity adaptation during migration. This study investigated the effects of different salinities (0, 6, 12, and 18‰) on the total lipids, neutral lipids, and polar lipids contents, and fatty acid profiles in the gonads, hepatopancreas, and muscles of adult E. sinensis after 40 days of salinity adaptation. The results showed that the males and females from 12‰ treatment had the highest contents of total lipids and neutral lipids in their hepatopancreas and total lipids in the muscles. Notably, salinity had a greater effect on the fatty acid profiles in the hepatopancreas compared to that in the gonads and muscles. The male hepatopancreas treated with 18‰ salinity had the highest percentage of total n-6 polyunsaturated fatty acid (∑n-6PUFA) in both neutral lipids and polar lipids, while the percentage of total n-3 polyunsaturated fatty acid (∑n-3PUFA) in neutral lipids and polar lipids decreased significantly with increasing salinity in males. In females, the 0‰ treatment had the highest percentages of total saturated fatty acids in neutral lipids and polar lipids in the hepatopancreas, while the highest ∑n-3PUFA and ∑n-6PUFA in neutral lipids and polar lipids were detected in the 12‰ treatment group. In conclusion, brackish water could promote the accumulations of total lipids and neutral lipids in the hepatopancreas and change the fatty acid profiles of adult E. sinensis, particularly in the hepatopancreas after long-term salinity adaptation.

Item ID: 60544
Item Type: Article (Research - C1)
ISSN: 1932-6203
Copyright Information: © 2019 Long et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
Funders: Natural Science Foundation of China (NSFC), Ministry of Agriculture, China (MA), Shanghai Municipal Science and Technology Commission (SMSTC), Shanghai Education Commission (SEC), Shanghai Collaborative Innovation Center for Aquatic Animal Genetics and Breeding (SCICAAGB)
Projects and Grants: NSFC no. 41876190, MA CARS-48, SMSTC No. 19DZ2284300, SEC no.A1-2801-18-1003, SCICAAGB A1-2041-18-0003
Date Deposited: 02 Oct 2019 07:31
FoR Codes: 07 AGRICULTURAL AND VETERINARY SCIENCES > 0704 Fisheries Sciences > 070401 Aquaculture @ 100%
SEO Codes: 83 ANIMAL PRODUCTION AND ANIMAL PRIMARY PRODUCTS > 8301 Fisheries - Aquaculture > 830101 Aquaculture Crustaceans (excl. Rock Lobster and Prawns) @ 100%
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