Table 3. Alpha-diversity indices of intestinal microbial flora of Planorbella trivolvis.

Estimators	HV-Mean	HV-Sd	NHV-Mean	NHV-Sd	P-value
OUT number	307.60	25.71	90.00	46.67	0
Sequences number	54277.60	6298.01	39606.6	6846.06	0.008
sobs	305.2	24.56	87.00	46.67	1.513e−05
shannon	3.42	0.19	1.00	0.50	7.253e−06
simpson	0.09	0.03	0.61	0.17	0.000133
ace	379.08	29.34	118.69	47.56	6.243e−06
chao	375.04	26.28	105.4	47.40	3.809e−06
coverage	0.9976	0.0003	0.9992	0.0003	4.689e−05

Note:

HV, the herbivorous snails reared with alflafa; NHV, the non-herbivorous snails reared with pellet feed. P-values were from a t-test.