| 早熟期间中华绒螯蟹肝胰腺指数、肝脂含量及脂肪酸组成的变化 |
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| 引用本文： | 陈再忠.早熟期间中华绒螯蟹肝胰腺指数、肝脂含量及脂肪酸组成的变化[J].水产学报,2003,27(1):57-61. |
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| 作者姓名： | 陈再忠 |
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| 作者单位： | 上海水产大学渔业学院,上海,200090 |
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| 基金项目： | 上海市教育委员会重点学科项目 |
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| 摘 要： | 实验采用称量法和气相色谱法分别测定了性早熟前后中华绒螯蟹的肝胰腺指数(HI)、肝脂含量(LC)和肝胰腺脂肪酸组成。雌雄蟹的HI和LC在早熟前后的变化趋势一致,都是早熟个体低于未成熟个体。在性早熟前,雌雄蟹的肝胰腺脂肪酸组成基本一致,只是雌蟹中C20∶5n-3较高(P<0.05)。然而,对早熟前后的个体作比较时,发现雌雄蟹变化情况有很大差异:(1)早熟雌蟹中C16∶1n-7、C16∶0和C18∶0高于未成熟雌蟹(P<0.01),而C20∶5n-3、C20∶4n-6和C22∶6n-3则低于后者(P<0.01);(2)早熟雄蟹中C18∶1高于未成熟雄蟹(P<0.05),而C14∶0(P<0.05)、C16∶1n-7(P<0.05)和C20∶5n-3(P<0.01)皆低于后者。以上结果表明:雌雄蟹在性早熟前后存在肝胰腺脂肪酸组成变化的差异,且C20∶5n-3可能主要参与成熟蜕壳和膜的构建,而C22∶6n-3可能主要参与卵巢发育和卵黄的发生。
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| 关 键 词： | 中华绒螯蟹 性早熟 肝胰腺 肝胰腺指数 肝脂含量 脂肪酸组成 |
| 文章编号： | 1000-0615(2003)01-0057-05 |
| 收稿时间： | 2014/3/20 0:00:00 |
| 修稿时间： | 2002年2月26日 |
Changes of hepatopancreas index, lipid content and fatty acid composition in Eriocheir sinensis during precocity |
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| CHEN Zai zhong.Changes of hepatopancreas index, lipid content and fatty acid composition in Eriocheir sinensis during precocity[J].Journal of Fisheries of China,2003,27(1):57-61. |
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| Authors: | CHEN Zai zhong |
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| Institution: | Fisheries College,Shanghai Fisheries University,Shanghai200090,China |
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| Abstract: | The hepatopancreas index ( HI) , lipid content ( LC) and fatty acid composition in Eriocheir sinensis
before and after the precocity, were compared by gravimetry and gas chromatography. The results showed that HI
and lipid content both decreased after the precocious molt, regardless of their sex. As for fatty acid composition
of hepatopancreas, immature male and female individuals were very similar, except for C20..5n- 3 significantly
higher in the latter ( P < 0. 05) . However, it varied with the sex when the precocious and immature crabs were
compared. In female, the percentage content of C16..1n- 7, C16..0 and C18..0 were signif icantly higher in precocious
individuals, but that of C20..4n- 6, C20..5n- 3( EPA) and C22..6n- 3( DHA) signif icant ly lower( P < 0. 01) . And in
male, there was only C18..1 signif icant ly higher ( P < 0. 05) in precocious individuals while C14..0 ( P < 0. 05) ,
C16..1n- 7( P < 0. 05) and C20..5n- 3( P< 0. 01) lower. According to the results, it might come to the conclusions that EPA is very important during precocious molt and construction of membranes, while DHA mainly participates
in the development of ovary and vitellogenesis. |
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| Keywords: | Eriocheir sinensis precocity hepatopancreas hepatopancreas index lipid content fatty acid composition |
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