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大连湾双齿围沙蚕属于一生一次性生殖类型。每年１～３月，是动物卵原细胞增殖时期；种群卵母细胞卵黄合成开始于３～４月，经历４～６月快速生长之后，种群卵母细胞同步性成熟，并于６月底～７月初进入产卵期。在沙蚕生殖周期中，水温和光照时间是控制配子发育的重要外源性因子，回归分析显示，低温和延长的日照时间（１２～３月）促进卵原细胞增殖；高温和长日照（４～６月）促进卵母细胞生长。野外调查和室内实验结果都表明，种群卵细胞发有的起点温度为５℃；环境水温的低温效应对沙蚕生殖周期和卵母细胞同步性成熟具有深刻影响。
Dalian Bay bisexual Nereis belong to a one-time sexual reproduction type. From January to March every year, it is the period of animal egg cell proliferation. The egg yolk synthesis of the population began from March to April. After rapid growth from April to June, the oocyte of the population matured synchronously, and at the end of June ~ 7 Enter the spawning period early in the month. In the reproductive cycle of Nereis, the water temperature and light time were the important exogenous factors controlling the development of gametes. Regression analysis showed that hypothermia and prolonged sunshine duration (December-March) promoted the proliferation of oogonium cells. High temperature and long-day sunshine ~ June) to promote oocyte growth. The results of field investigation and laboratory experiments show that the onset temperature of egg population is 5 ℃, and the low temperature effect of environmental water temperature has a profound impact on the reproductive cycle and oocyte synchronization.