Steroid sex hormone dynamics during estradiol-17 beta induced gonadal differentiation in Paralichthys olivaceus (Teleostei)
文献类型：期刊论文
| 作者 | Sun Peng1,2; You Feng1; Liu Mengxia3; Wu Zhihao1; Wen Aiyun1; Li Jun1; Xu Yongli1; Zhang Peijun1 |
| 刊名 | CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY
 |
| 出版日期 | 2010-03-01 |
| 卷号 | 28期号:2页码:254-259 |
| 关键词 | olive flounder gonadal differentiation estradiol-17 beta (E2) testosterone (T) exogenous E2 treatment |
| 英文摘要 | Steroid sex hormones, such as estradiol-17 beta (E2) and testosterone (T), are important regulators of sex change in fish. In this study, we examined the effects of E2 treatment on the dynamics of E2 and T during gonadal differentiation in the olive flounder Paralichthys olivaceus using histology and radioimmunoassay (RIA). Flounder larvae were divided into five groups (G0-G4), and fed with 0 (control), 0.2, 2, 20 and 100 mg E2/kg feed from 35 to 110 day post hatching (dph). Fish growth in the G1 and G2 groups was not significantly different from that of the control group (P > 0.05), while fish in the G3 and G4 groups were less active and showed growth depression and high mortality. The gonads of fish in the G3 and G4 groups were smaller and surrounded by hyperplastic connective tissue. The frequency of females in the G0-G4 groups was 54.5%, 75.0%, 100%, 100% and 93.3%, respectively. The RIA analyses of E2 and T showed that T levels decreased during gonadal differentiation, and increased slightly at the onset of ovarian differentiation, while E2 levels increased gradually and peaked at the onset of ovarian differentiation in the control group. In the E2-treated groups, T levels decreased before the onset of ovarian differentiation. E2 levels were high on the 48 dph, but declined to a lower level on the 54 dph, and then increased gradually during gonadal differentiation. And a sharp increase of E2 levels were observed in all E2-treated groups at the onset of ovarian differentiation. The data suggest that T and E2 play important roles during gonadal differentiation, and an E2 dose of 2 mg/kg feed could induce sex reversal in P. olivaceus. |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000275781400008 |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/32872]  |
| 专题 | 海洋研究所_实验海洋生物学重点实验室 |
| 作者单位 | 1.Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China 3.Shandong Prov Mari Culture Inst, Qingdao 266002, Peoples R China |
| 推荐引用方式 GB/T 7714 | Sun Peng,You Feng,Liu Mengxia,et al. Steroid sex hormone dynamics during estradiol-17 beta induced gonadal differentiation in Paralichthys olivaceus (Teleostei)[J]. CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY,2010,28(2):254-259. |
| APA | Sun Peng.,You Feng.,Liu Mengxia.,Wu Zhihao.,Wen Aiyun.,...&Zhang Peijun.(2010).Steroid sex hormone dynamics during estradiol-17 beta induced gonadal differentiation in Paralichthys olivaceus (Teleostei).CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY,28(2),254-259. |
| MLA | Sun Peng,et al."Steroid sex hormone dynamics during estradiol-17 beta induced gonadal differentiation in Paralichthys olivaceus (Teleostei)".CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY 28.2(2010):254-259. |
入库方式： OAI收割
来源：海洋研究所
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