中华绒螯蟹血淋巴钙离子和17β-雌二醇浓度与性早熟的关系

The relationships between Ca^(2+) , 17β-estradiol levels in the hemolymph and precociousness of Eriocheir sinensis

中华绒螯蟹的性腺发育与血淋巴钙离子浓度相关。性早熟雌性扣蟹 (一秋龄 )血淋巴钙离子浓度为 2 1.2 5± 11.89mmol·L-1,明显高于正常发育的 13 .70± 1.17mmol·L-1;雄性扣蟹 (一秋龄 )则相反 ,性早熟扣蟹血淋巴钙离子浓度为 16 .33± 1.38mmol·L-1,低于正常发育的 2 0 .13± 2 .37mmol·L-1。二秋龄雄性成蟹的血淋巴钙离子指标与性早熟雄性扣蟹相当 ,无显著差异。随着个体的生长发育 ,雌性中华绒螯蟹血淋巴 17β -E2浓度逐步提高 ,正常发育扣蟹为 0 .15± 0 .0 5pg·mL-1,性早熟扣蟹为 0 .5 9± 0 .15ng·mL-1,二秋龄成蟹为 2 .31± 1.0 8pg·mL-1。

The gonadal development of Chinese mitten handed crab(Eriocheir sinensis) is correlative with the Ca 2+ level in the hemolymph. For the one autumn Chinese mitten handed crab (so called buttony crab), the hemolymph Ca 2+ level of the precocious female buttony crab is much higher than that of the normal female buttony crab (21.25±11.89 mmol·L -1 for the former and 13.70±1.17 mmol·L -1 for the latter). On the contrary, the hemolymph Ca 2+ level of the precocious male buttony crab is only 16.33± 1.38 mmol·L -1 , which is lower than that of 20.13±2.37mmol·L -1 of the normal male buttony crab. The Ca 2+ level in the hemolymph of male adult crab (two autumn crab) is almost the same as that of the male precocious buttony crab. With the growing and maturating, the hemolymph 17β estradiol (17β E 2) concentration of the female crab rises gradually, 0.15±0.05ng·ml -1 for the normal female buttony crab, 0.59±0.15ng·ml -1 for the precocious female buttony crab and 2.31±1.08ng·ml -1 for the female adult crab (two autumn crab), respectively.