Fiore L
Istituto di Biologia generale dell'Università di Pisa, Pisa, Italy.
Oecologia. 1971 Dec;7(4):356-360. doi: 10.1007/BF00345859.
By producing subitaneous eggs the rhabdocoel Mesostoma ehrenbergii may quickly increase the population size. The production of this kind of eggs by young worms is inhibited by the presence of adults in the culture medium. The inhibition is specific, and it is observed also if young and adult worms are not in direct contact, or if young worms are added to the water where adults had been previously kept: there is therefore evidence for a chemical mediator. The sensitivity to the inhibition occurs during the first five days after birth, with a maximum on the 2nd to 3rd day.
通过产出速生卵，扁形虫埃伦伯格中口虫（Mesostoma ehrenbergii）可以迅速增加种群数量。培养基中成年个体的存在会抑制幼体产出这种卵。这种抑制作用具有特异性，而且即使幼体和成年个体不直接接触，或者将幼体添加到成年个体先前所在的水中，也会观察到这种抑制作用：因此有证据表明存在一种化学介质。对这种抑制作用的敏感性在出生后的头五天出现，在第2至3天达到最大值。
