温度和光照对食蚊鱼寄生百慕大伴盐虫孵化的影响  

Influence of temperature and illumination on egg embryonation and hatching of Salsuginus bermudae from Gambusia affinis

作　　者：熊向英 蔡星[1,3] 丁雪娟 XIONG Xiangying1, 2, CAI Xing1, 3, DING Xuejuan1(1. Guangdong Provincial Key Laboratory for Healthy and Safe Aquacultrue, School of Life Science, South China NormalUniversity, Guangzhou 510631, China; 2. Guangxi Key Laboratory of Marine Biotechnology, Guangxi Institute of Oceanology,Beihai 536000, China; 3. School of Information Technology, Beijing Normal University Zhuhai Campus, Zhuhai 519087, Chin)

机构地区：[1]华南师范大学生命科学学院广东省水产健康安全养殖重点实验室,广东广州510631 [2]广西海洋研究所广西海洋生物技术重点实验室,广西北海536000 [3]北京师范大学珠海分校信息技术学院,广东珠海519087

出　　处：《南方水产科学》2018年第3期107-112,共6页South China Fisheries Science

基　　金：国家自然科学基金项目(31572232); 广东省2016年省级渔港建设和渔业发展专项资金(粤财农[2016]11号)资助

摘　　要：为研究温度和光照对寄生于食蚊鱼(Gambusia affinis)鳃的百慕大伴盐虫(Salsuginus bermudae)虫卵孵化的影响,将收集到的虫卵分别置于35℃、30℃、25℃、20℃、15℃、10℃的梯度温度中以及全光照、12 h光照和12 h黑暗交替的节律光照(6:00开灯,18:00关灯)、全黑暗的条件下,记录其孵化率和幼虫孵出所需时间。结果表明,在10~35℃的温度范围内,百慕大伴盐虫孵化的最适温度为35℃,孵化率与温度呈极显著的正相关,同时温度显著影响百慕大伴盐虫的胚胎发育阶段,35℃时虫卵产出第2天即开始有钩毛蚴孵出,而10℃时第7天才开始有幼虫孵出。不同的光照条件对百慕大伴盐虫虫卵的孵化率影响不大,表明光照不是其孵化的必需条件,但节律光照对虫卵的孵化具有延滞作用。To investigate the effect of temperature and illumination on egg embryonation of Salsuginus bermudae, we collected the eggs of S.bermudae from the gills of Gambusia affinis and put them at temperatures of 35 ℃, 30 ℃, 25 ℃, 20 ℃, 15 ℃ and 10 ℃,exposing to complete illumination, alternation of 12-hour illumination and darkness（light on 06：00; light off 18：00）, and complete darkness, and then recorded the hatchability and the time needed for larva hatching. The results show that the optimum incubation temperature was 35℃, and the correlation between the hatching rate and incubation temperature was significantly positive. Besides,temperature influenced the embryonation period obviously： coracidium appeared on the 2^（nd） day after the eggs being laid at 35 ℃, but the larvae only appeared on the 7^（th） day after the eggs being laid at 10 ℃. Effect of different illumination conditions on the hatching rate was not remarkable, indicating that light is not a necessary factor for egg hatching, but 12-hour illumination and darkness can delay the embryonic period.

关 键 词：食蚊鱼 百慕大伴盐虫 单殖吸虫 虫卵孵化 

分 类 号：S941[农业科学—水产养殖]