| Effect of temperature and photoperiod on maturation of Cephalothrix hongkongiensis （Nemertea： Palaeonemertea） |
| |
| 引用本文： | 李应东,宋肖跃,张珊珊,朱林,孙世春.Effect of temperature and photoperiod on maturation of Cephalothrix hongkongiensis （Nemertea： Palaeonemertea）[J].中国海洋与湖沼学报,2014,32(4):764-772. |
| |
| 作者姓名： | 李应东 宋肖跃 张珊珊 朱林 孙世春 |
| |
| 作者单位： | Institute of Evolution and Marine Biodiversity, Ocean University of China, Qingdao 266003, China |
| |
| 基金项目： | Supported by the National Natural Science Foundation of China(Nos.30970333,31172046) |
| |
| 摘 要： | The limited knowledge about the relationships between environmental factors and the maturation and reproductive seasonality of nemerteans is mostly obtained from field studies, and in many cases is conjectural. Few species have been studied under well-controlled laboratory conditions. In this work, the effects of temperature and photoperiod on gonad development and spawning of Cephalothrix hongkongiensis were observed by rearing worms under different temperatures and photoperiods. Worms reared at 4℃ and 6℃ showed no growth or gonadal development, and all died within 109 days. At 8℃ and 12℃, gonads could be seen from 90 days to the termination of the 360-day experiment, but no spawning was observed. Worms maintained at 16, 24, and 28℃ showed both gonadal development and spawning, and matured faster at higher temperatures. Under a fixed temperature(16℃), photoperiod did not have any significant impact on maturation and spawning. It is likely that temperature plays a major role in regulating the maturation and reproductive cycle of C. hongkongiensis.
|
| 关 键 词： | 温度 成熟 光照 实验室条件 性腺发育 环境因素 生殖周期 光周期 |
Effect of temperature and photoperiod on maturation of Cephalothrix hongkongiensis (Nemertea: Palaeonemertea) |
| |
| Yingdong Li,Xiaoyue Song,Shanshan Zhang,Lin Zhu,Shichun Sun.Effect of temperature and photoperiod on maturation of Cephalothrix hongkongiensis (Nemertea: Palaeonemertea)[J].Chinese Journal of Oceanology and Limnology,2014,32(4):764-772. |
| |
| Authors: | Yingdong Li Xiaoyue Song Shanshan Zhang Lin Zhu Shichun Sun |
| |
| Institution: | 1. Institute of Evolution and Marine Biodiversity, Ocean University of China, Qingdao, 266003, China
|
| |
| Abstract: | The limited knowledge about the relationships between environmental factors and the maturation and reproductive seasonality of nemerteans is mostly obtained from field studies, and in many cases is conjectural. Few species have been studied under well-controlled laboratory conditions. In this work, the effects of temperature and photoperiod on gonad development and spawning of Cephalothrix hongkongiensis were observed by rearing worms under different temperatures and photoperiods. Worms reared at 4°C and 6°C showed no growth or gonadal development, and all died within 109 days. At 8°C and 12°C, gonads could be seen from 90 days to the termination of the 360-day experiment, but no spawning was observed. Worms maintained at 16, 24, and 28°C showed both gonadal development and spawning, and matured faster at higher temperatures. Under a fixed temperature (16°C), photoperiod did not have any significant impact on maturation and spawning. It is likely that temperature plays a major role in regulating the maturation and reproductive cycle of C. hongkongiensis. |
| |
| Keywords: | temperature photoperiod gonad development reproduction Cephalothrix hongkongiensis Nemertea |
| 本文献已被 CNKI 维普 SpringerLink 等数据库收录！ |
|
