水生生物学报Issue(6)：1177-1183,7.DOI:10.7541/2015.154
温度对坏鳃指环虫产卵、孵化和发育的影响
THE EFFECTS OF TEMPERATURE ON EGG LAYING, EGG HATCHING AND LARVAL DEVELOPMENT OFDACTYLOGYRUS VASTATOR
摘要
Abstract
The effects of water temperature on egg laying and hatching in vitrowere investigated, and egg laying and development in vivo at 20℃ were also characterised. The results indicated a positive correlation between mean egg production and temperature in vitro, and the mean egg production was 5.9, 9.1, 9.2 and 13.4 eggs/worm at 10, 20, 30 and 35℃, respectively. Except 4℃, majority of the eggs were laid during the first 5h. However, egg laying of the mature worms was continuous and uniform, with a mean 6.5 eggs/worm at 20℃ per day. Although the hatching time and the duration of hatching declined with increasing temperature, with 19d, 3d, 2d, 36h and 24d, 5d, 5d, 3d at 10℃, 20℃, 30℃ and 35℃, respectively, the highest hatching success was observed at 30℃. Ninety percent of worms reached maturity within 7 days post-infection when exposed to 20℃. The life-cycle ofD. vas-tatorfrom egg to sexual maturity lasted for 8 to 11 days which indicated that a second treatment should be admi-nistered a week later at 20℃.关键词
坏鳃指环虫/温度/产卵/孵化/幼虫发育Key words
Dactylogyrus vastator/Temperature/Egg laying/Egg hatching/Larval development分类
农业科技引用本文复制引用
张效平,商宝娣,王桂堂,李文祥,杨兴,李正友..温度对坏鳃指环虫产卵、孵化和发育的影响[J].水生生物学报,2015,(6):1177-1183,7.基金项目
the Earmarked Fund for China Agriculture Research System (CARS-46-49) （CARS-46-49）
the National Natural Science Foundation of China (No.31272695) （No.31272695）
the science and techndogy fund of Guizhou provime (QKH-LH, NO.[2014]7698) （QKH-LH, NO.[2014]7698）
