CAJ | 학술논문

采用突变和渐变两种实验方法检验了盐度对波部东风螺幼虫存活、生长和变态的影响．这两个实验，在盐度21.0～27.5的范围内，幼虫均有较高的存活率、变态率和较快的生长速度．其中，在盐度24.0处，幼虫的存活率和变态率都最高，生长速度也最大．不管盐度如何，幼虫较快的生长速度总是和自发变态前较短的浮游期相联系的．尽管渐变盐度没能使幼虫的存活率、变态率、生长速度、变态个体的大小以及浮游期的长度得到显著的改变，却明显地加宽了幼虫存活和变态的盐度范围．渐变盐度的实验方法优于突变盐度的实验方法．
채용돌변화점변량충실험방법검험료염도대파부동풍라유충존활、생장화변태적영향．저량개실험，재염도21.0～27.5적범위내，유충균유교고적존활솔、변태솔화교쾌적생장속도．기중，재염도24.0처，유충적존활솔화변태솔도최고，생장속도야최대．불관염도여하，유충교쾌적생장속도총시화자발변태전교단적부유기상련계적．진관점변염도몰능사유충적존활솔、변태솔、생장속도、변태개체적대소이급부유기적장도득도현저적개변，각명현지가관료유충존활화변태적염도범위．점변염도적실험방법우우돌변염도적실험방법．
Effects of salinity on larval survival, growth and metamorphosis of Babylonia formosae habei were examined by using two experimental approaches,gradually changed and abruptly changed. In both experiments, larval survival rates and metamorphosis rates were higher and larval growth were faster in salinity from　21.0 to 27.5. Moreover, the highest rates of both survival and metamorphosis which were observed was at salinity 24.0，so was the fastest growth rate. Regardless of salinity, faster growth was associated with a shorter planktonic stage prior to spontaneous metamorphosis. Although gradually changed salinity could insignificantly alter larval survival rates, metamorphosis rates, sizes of metamorphosis and length of larval planktonic stage, apparently widen salinity range of larval survival and metamorphosis. The experimental method of gradually changed salinity was better than that of abruptly changed salinity.