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利用显微技术连续观察了背瘤丽蚌(Lamprotula leai)稚蚌发育、行为、生长和壳型变化等重要生物学特征。结果表明,刚脱落的稚蚌平均壳长208.5μm,在水温23.9～32.8℃条件下,经过75 d生长发育,进入幼蚌阶段,此时幼蚌平均壳长10.12 mm。壳长(L)、壳高(H)与日龄(t)的关系分别为L=0.220 4 e0.051 2t(R2=0.993 5)和H=0.227 7 e0.041 8t(R2=0.994 2),壳高(H)与壳长(L)的关系为H=0.781 5 L0.814(R2=0.998 1)。以稚蚌行为特征变化为依据,将背瘤丽蚌稚蚌发育划分为爬行期和埋栖期,再以稚蚌壳形状变化为依据,将爬行期稚蚌发育分为稚蚌脱落期、背部平直期、壳顶突出期,反映了背瘤丽蚌稚蚌生长与发育过程的动态变化。
The microscopic techniques were used to continuously observe the important biological characteristics of the development, behavior, growth and shell change of the genus Lamprotula leai. The results showed that the juvenile fresh shell had an average shell length of 208.5μm. After the water temperature was 23.9 ~ 32.8 ℃, the juvenile clam entered the juvenile mussel stage after 75 days of growth. At this time, the average shell length of juvenile mussel was 10.12 mm. The relationship between shell length (L), shell height (H) and age (t) was respectively L = 0.220 4 e0.051 2t (R2 = 0.993 5) and H = 0.227 7 e0.041 8t (R2 = 0.994 2) , The relationship between shell height (H) and shell length (L) is H = 0.781 5 L0.814 (R2 = 0.998 1). Based on the change of behavioral characteristics of juvenile clam, the development of juvenile clam was divided into crawling and burying habitat. Based on the change of shape of juvenile clam shell, the development of juvenile clam was divided into exfoliation stage, Flat, shell top outburst, reflecting the growth of the anemone anemone growth and development of dynamic process.