文章摘要
魏薇.中华绒螯蟹体内的雌二醇对性早熟的影响[J].水产学报,2005,29(6):
中华绒螯蟹体内的雌二醇对性早熟的影响
Effect of estradiol in hemolymph and gonad on precociousness of Eriocheir sinensis
投稿时间:2014-03-09  修订日期:2014-03-09
DOI:
中文关键词: 中华绒螯蟹 性早熟 雌二醇
英文关键词: Eriocheir sinensis precociousness estradiol
基金项目:上海市高等学院科研和教改项目,上海市学科科研项目
作者单位地址
魏薇 上海水产大学生命科学与技术学院 上海水产大学生命科学与技术学院 上海200090 上海200090 上海水产大学生命科学与技术学院; 上海水产大学生命科学与技术学院 上海200090; 上海200090
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中文摘要:
      中华绒螯蟹(Eriocheir sinensis)的大规模人工养殖生产中存在1龄蟹种的性早熟现象.性早熟蟹是指幼蟹培育过程中性腺当年发育成熟,比正常的性成熟年龄提早1年,在生产上具有相当的普遍性.性早熟蟹当年即加入生殖洄游的行列,第2年生长缓慢,甚至停止,死亡率高,并且不可能再继续饲养到2秋龄成蟹规格,严重影响了养殖效益,限制了成蟹养殖业的发展,具有极大的危害性.
英文摘要:
      The precociousness of Chinese mitten-handed crab ( Eriocheir sinensis ) is correlative with the level of estradiol in the hernolymph and gonad. In female, the hemolymph estradiol level of immature crab was ( 118.75 ? 11.25 ) pg. mL^-1, which was much lower than those of precocious and mature crab ( ( 291.84?33.71 ) pg?mL^-1 for the former and ( 261.01 ? 54.49 ) pg?mL^-1 for the latter) ( P 〈 0.01 ). The estradiol levels in the hemolymph of female crab with precocious gonad was higher than those of female crab with mature gonad while ovarian estradiol level of female crab with precocious gonad was lower than the latter( (232.16?32.40) pg?g^-1 for the precocious crab and (257.77 ? 39.40) pg?g^-1 for the mature crab)( P 〈 0.05). And in male, the estradiol concentration in the hemolymph of immature crab was ( 122.66 ?17.43 ) pg?mL^-1, which was significantly lower than those of precocious and mature crab( (234.75?22.91 ) pg?mL^-1 for the precocious gonad and ( 237.62?23.51 ) pg?mL^-1 for the mature gonad)(P〈0.01). The hemolymph estmdiol level of male precocious crab was almost the same as that of the male mature crab, though the estradiol level in the testes of the former was higher than the latter( 149.96 ? 23.23) pg?g^-1 for the precocious crab and (128.48?26.05)pg?g^-1 for the mature crab)(P 〈 0.05). These results revealed that estradiol plays a prominent role in the precociousness of Chinese mitten-handed crab ( Eriocheir sinensis ) and the increases of the estradiol level in the crab probably lead to the precociousness of the crab.
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