Grazing Effects of Xenocypris davidi Bleeker (Cyprinidae, Cypriniformes) on Filamentous Algae and the Consequent Effects on Intestinal Microbiota

Table 1

Water chemical indices of three experimental groups (G, S1, and S2) on days 0–9.

Group	Culturing time (day)	TN (mg·L^−1)	TP (mg·L^−1)	NO2-N (mg·L^−1)	NH4^+-N (mg·L^−1)
G	0	1.515 ± 0.286^d	0.013 ± 0.005^f	0.009 ± 0.004^d	0.202 ± 0.037^ab
	1	1.563 ± 0.123^d	0.023 ± 0.005^e	0.115 ± 0.010^b	0.236 ± 0.024^a
	3	2.031 ± 0.205^c	0.070 ± 0.007^d	0.211 ± 0.028^a	0.193 ± 0.014^ab
	5	2.498 ± 0.540^b	0.086 ± 0.003^c	0.101 ± 0.019^b	0.206 ± 0.017^ab
	7	2.794 ± 0.170^ab	0.140 ± 0.007^b	0.055 ± 0.007^c	0.132 ± 0.019^c
	9	3.138 ± 0.071^a	0.172 ± 0.006^a	0.018 ± 0.007^d	0.158 ± 0.006^bc
S1	0	1.360 ± 0.058^e	0.001 ± 0.000^d	0.001 ± 0.001^e	0.164 ± 0.026^c
	1	2.008 ± 0.184^d	0.059 ± 0.005^c	0.068 ± 0.011^a	0.258 ± 0.054^bc
	3	2.214 ± 0.109^d	0.055 ± 0.006^c	0.005 ± 0.003^de	0.858 ± 0.122^b
	5	2.443 ± 0.209^c	0.099 ± 0.012^b	0.024 ± 0.010^bc	1.262 ± 0.151^b
	7	2.730 ± 0.304^b	0.114 ± 0.022^b	0.034 ± 0.019^b	1.032 ± 0.175^b
	9	2.994 ± 0.043^a	0.140 ± 0.023^a	0.015 ± 0.007^cd	0.084 ± 0.006^a
S2	0	1.550 ± 0.128^d	0.034 ± 0.012^d	0.011 ± 0.007^b	0.264 ± 0.061^b
	1	1.825 ± 0.142^cd	0.036 ± 0.007^cd	0.018 ± 0.012^b	0.366 ± 0.034^a
	3	1.815 ± 0.369^cd	0.046 ± 0.020^bcd	0.036 ± 0.025^a	0.088 ± 0.016^c
	5	2.161 ± 0.228^ab	0.058 ± 0.012^bc	0.014 ± 0.011^b	0.077 ± 0.040^c
	7	2.097 ± 0.306^bc	0.066 ± 0.012^b	0.028 ± 0.010^ab	0.253 ± 0.018^b
	9	2.479 ± 0.286^a	0.088 ± 0.022^a	0.036 ± 0.004^a	0.217 ± 0.036^b

Note. Different letters indicate significant differences based on ANOVA () (internal comparison of each group). Mean ± SD (n = 3).