Study of the Effect of the Earthworm (Aporrectodea molleri) Cutaneous Excreta on Bacterial Growth

Table 4

Growth of Pseudomonas fluorescens in solid media based on cutaneous excreta of earthworm Aporrectodea molleri (CEX) at different concentrations (C_n: g/100 ml).

		Solid media based on cutaneous excreta of earthworm (CEX) at different concentrations (Cn)								NA
		C1 = 1%	C2 = 0.5%	C3 = 0.25%	C4 = 0.12%	C5 = 0.06%	C6 = 0.03%	C7 = 0.015%	C8 = 0.0075%
NCF		70.67 ± 11.56^a	172.33 ± 3.92^b	299.67 ± 26.52^c	293 ± 29.3^c	275 ± 14.5^c	272.67 ± 8.19^c	258.67 ± 19.36^c	230.33 ± 3.1^bc	67.7 ± 1.2^a
ECEX/NA	RC (%)	50.00	25.00	12.50	6.00	3.00	1.50	0.75	0.39	100
	RG (%)	104.38	254.55	442.64	432.79	406.20	402.76	382.08	340.23	100

The growth is expressed by the average number (±standard error) of colonies formed (NCF) at each concentration. The letters are significantly different at the confidence level of 0.05 between the culture media (degree of significance by the Tukey test ( ≤ 0.05)). The effectiveness of the CEX extract (E_CEX/NA) is evaluated in relation to the conventional NA medium by, simultaneously, the relative concentration (RC) and the relative growth (RG).