眼柄切除及注射黄体酮对中华绒螯蟹幼蟹卵巢发育的影响

Effects of eyestalk-ablated and injecting progesterone on the Chinese Mitten-Handed juvenile crab ovarian development

采用切除单侧、双侧眼柄及注射黄体酮药物的方法研究对幼蟹卵巢发育的影响。结果表明 ,切除双侧眼柄可明显增加幼蟹体重、蜕壳频率 ,极显著提高卵巢指数、肝胰腺指数和卵巢 /肝胰腺质量比 ,极显著增大卵母细胞直径 ;切除单侧眼柄可极显著增加卵巢指数和卵巢 /肝胰腺质量比 ,极显著增大卵母细胞直径 ;注射黄体酮药物可极显著增大卵母细胞直径 ,卵巢指数、卵巢 /肝胰腺质量比增加未达统计学上的显著水平。

The effects of unilateral,double eyestalk-ablated and injecting progesterone on the juvenile crab ovarian development were studied. The results showed that double eyestalk-ablated can effectively increase the weight and molting frequency of the juvenile crab, significantly improve the ovarian index, hepatopancreas index and ovary/hepatopancreas mass ratio, significantly incease the oocyte diameter; unilateral eyestalk-ablated can significantly improve the ovarian index and ovary/hepatopancreas mass ratio, significantly incease the oocyte diameter; injecting progesterone can significantly incease the oocyte diameter;the increment of the ovarian index and ovary/hepatopancreas mass ratio can not reach significant level statistically.