饱食后的水螅经创伤及修复后体细胞有丝分裂频率的研究  

A STUDY ON SOMATIC MITOTIC FREQUENCY OF WOUDED HYDRA AND REPAIRED HYDRA AFTER FEEDING

作　　者：孙国娜[1] 张彦帅[1] 楼柏丹[1] 范学铭[1] 

机构地区：[1]哈尔滨师范大学

出　　处：《哈尔滨师范大学自然科学学报》2004年第1期71-73,共3页Natural Science Journal of Harbin Normal University

基　　金：黑龙江省自然科学基金资助项目

摘　　要：分别将饱食后 1 2h、2 4h、36h的水螅于胃腔中部横切 :1 )检查了下段横切面一定重量组织内有丝分裂处于中期的细胞数目 ;2 )经 1 2h、2 4h、36h修复后检查了上段一定重量愈合组织内有丝分裂处于中期的细胞数目 .结果表明 :1 )水螅在饱食1 2h、2 4h、36h后 ,同一单位重量组织内有丝分裂处于中期的细胞数目以饱食 2 4h时为最高 ;2 )其创伤面经 1 2h、2 4h、36h修复后 ,同一单位重量组织内有丝分裂处于中期的细胞数目以修复 36h为最高 ;3)The hydra were cut transversely at the middle of their column 12 hours, 24 hours and 36 hours after feeding: 1) The number of metaphase cell was counted by examining the upper organisms, which were cut along the section and then were weighed; 2)The number of metaphase cell was counted in the lower organisms by the same method, when the animals had recovered for 12 hours, 24 hours and 36 hours. The results indicate that: 1) In the same weght after feeding, the number of metaphase cell in the organisms which were cut 24 hours after feeding is the most; 2) In the same weight after repairing, the number of metaphase cell in the organisms which were cut 36 hours after repairing is the most; 3)The number of metaphase cell in the organisms after repairing is accfordingly more than in the organisms which was just examined after being cut.

关 键 词：饱食 水螅 创伤 修复 体细胞 有丝分裂频率 腔肠动物 

分 类 号：Q959.131.1[生物学—动物学] Q253