摘要
通过恒温箱与温棚设置不同温度水平，测试结果表明：福寿螺卵发育的适宜温度为２０～３５℃，发育历期与温度相关系数ｒ＝－０．９４２。夏季卵的发育起点温度为１４．７℃，有效积温为１４１．４３５日度。福寿螺能生存的水温范围为１０～３０℃，最适水温范围为２０～２５℃；同一级螺，水温越高，长速越快。福寿螺在长沙地区的自然生态条件下不能越冬，冬季死亡率达１００％。福寿螺在无水条件下有休眠现象，冬季室温２～１７℃时，连续休眠３个月，成螺、中螺存活率达５７．６％。
The best water
temperature ranges from 20 to 25 for Ampullaria gigas culture, and the suitable air temperature
ranges from 20 to 35 for ova hatching. There is extremely great negative correlation between
hatching time and average temperature of ova with correlation coefficient r=-0.942. Ampullaria
gigas can not live through winter under natural ecological conditions north to Changsha, but
can live if the temperature of water is kept above 10 in winter. Mature and young Ampullaria
gigas can lie dormant for three months with 57.6% of survival rate without water in laboratory
under air temperature 2-17,but can not survive out of laboratory in winter.
出处
《水产学报》
CAS
CSCD
北大核心
1999年第1期20-26,共7页
Journal of Fisheries of China
关键词
福寿螺
温度
生长
发育
休眠
越冬
养殖
Ampullaria
gigas, Temperature, Growth, Development, Lie dormant, Living through winter, Ova
