中文摘要：

在环境因素和成熟和 nemerteans 的繁殖 seasonality 之间的关系的有限知识主要从领域研究被获得，并且在许多情况中是推测的。很少种类在控制得好的实验室条件下面被学习了。在这个工作，在性腺开发的温度和光周期的效果并且 Cephalothrix hongkongiensis 孵化被在不同温度和光周期下面饲养蠕虫观察。蠕虫在 4 点高耸了 ?? 贌踎??? 輖逘吗？？

英文摘要：

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~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℃）, 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.