钉螺有聚集性,服从负二项分布规律,已被不少学者所证实。钉螺系卵生繁殖,螺卵的分布性质是否受钉螺分布所影响,有利于对钉螺生态习性和行为的进一步了解和对“螺口”消长的研究,然尚未见有报道,为此,我们进行了实验观察和现场调查。 Snails have aggregated, subject to the negative distribution of the second law, has been confirmed by many scholars. Snail oviparous reproduction, snail eggs distribution nature is affected by snail distribution is conducive to Snail ecological habits and behavior of the further understanding and the “screw mouth” the growth and decline, however, have not been reported, for which we conducted Experimental observation and field investigation.