鲤鱼年生殖周期斯坦尼氏小体重量和超微结构的变化

Changes in the Weight and Ultrastructure of the Corpuscles of Stannius in a Reproductive Cycle of Carps Cyprinus carpio

摘要: 对鲤鱼(Cyprinus carpio)性腺指数［GI，(性腺重/体重)×102］和斯坦尼氏小体(corpuscle of Stannius，CS)指数［CSI，(CS重/体重)×106］，以及CS超微结构的变化做了一个年周期的跟踪观察。CSI与GI呈正相关；按囊泡和分泌细胞超微结构的变化，CS的生长期、分泌期和萎缩期在年周期中逐步演替。这种演替与光镜观察结果一致，提示与鲤鱼的繁殖周期密切相关。

Abstract: The gonad index［GI,(gonad weight/body weight)×102］,the corpuscle of Stannius (CS) index［CSI,(CS weight/ body weight)×106］,and the ultrastructure of CS were observed in a reproductive cycle of carps Cyprinus carpio.CSI was positively correlated with the GI;according to the ultrastructure of follicles and secretory cells,the growth phase,secretory phase and atrophy phase of CS were in succession in an annual cycle.Such a change is in accordance with those observed with light microscope,and likely related to the reproductive cycle of carps.