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番红砗磲Tridacna crocea Lamarck由D形幼虫发育至幼苗(第26天),壳长净生长106.62μm,壳高净生长104.41μm。其生长过程可分为三个时期:面盘期幼虫生长快,壳高的增长大于壳长的增长;变态期幼虫生长平缓,壳长与壳高的增长接近均衡;两者之间的足面盘过渡期幼虫生长出现两个停滞期。壳长与壳高的关系可以H=0.99998L-21.81275表示,它们分别与铰合部长度的变化有联系。壳长/壳高和(1/2)壳高/铰合部长度两个比率呈现一定的规律性,并可预测幼虫足的发生。
Tridacna crocea Lamarck developed from D larvae to seedlings (day 26) with a net long shell growth of 106.62 μm and a high net shell growth of 104.41 μm. The growth process can be divided into three stages: the larvae grow fast on the faceplate, the growth of the shell height is larger than the growth of shell length; the growth of metamorphosis larvae is gentle, the growth of shell length and shell height are close to equilibrium; There are two stagnant phases of disk transitional larval growth. The relationship between the shell length and shell height can be expressed as H = 0.99998L-21.81275, which are respectively related to the change of the length of the hinge. Shell length / shell height and (1/2) shell height / hinge length of the two ratios showed a certain regularity, and can predict the occurrence of larvae feet.