Science. 1984 Jul 27;225(4660):442-3. doi: 10.1126/science.225.4660.442.
Competent larvae are induced to undergo metamorphosis by sand from a sand dollar bed or an aqueous extract of the sand. Gel permeation chromatography and high-performance liquid chromatography of the extract yielded a 980-dalton peptide that will induce metamorphosis between 10(-6) and 10(-5) molar. Extracts of whole adults and gonads were also able to induce metamorphosis, and adults can condition substrates to induce metamorphosis. Therefore, the initiation of metamorphosis in Dendraster excentricus is controlled by a pheromone released by adult sand dollars.
有能力的幼虫可以通过来自砂钱床的沙子或沙子的水提物来诱导变态。该提取物的凝胶渗透色谱和高效液相色谱得到一种 980 道尔顿的肽，其在 10(-6) 到 10(-5) 摩尔之间诱导变态。整个成虫和性腺的提取物也能够诱导变态，并且成虫可以调节基质来诱导变态。因此，偏心砂海星变态的开始是由成年砂钱释放的信息素来控制的。
