. 2020 Apr 20;21(3):e41. doi: 10.4142/jvs.2020.21.e41

Table 1. The average number of Dermanyssus gallinae collected from corrugated cardboard traps located in three different horizontal zones, vertical levels, and rows in caged-layer poultry houses with either low (n = 3) or moderate to heavy (n = 3) infestation.

D. gallinae infestation	Variable	Sampling zones	Mean ± SEM^*	p value
Low infestation level using the MMS method (level I)	Horizontal positions	Adjacent to entrance zone	53.48 ± 12.73^a	0.009
		Center zone	55.85 ± 9.32^a
		Distant from entrance zone	109.07 ± 19.85^b
	Vertical levels	High level zone	77.96 ± 13.52^a	0.190
		Medium level zone	87.70 ± 19.05^a
		Low level zone	52.74 ± 12.18^a
	Selected rows	Left-most row zone	51.96 ± 8.80^a	0.047
		Middle row zone	66.15 ± 14.79^ab
		Right-most row zone	100.30 ± 19.38^b
Moderate to heavy infestation level using the MMS method (level II–III)	Horizontal positions	Adjacent to entrance zone	463.33 ± 114.68^a	0.031
		Center zone	445.37 ± 106.76^a
		Distant from entrance zone	182.15 ± 40.71^b
	Vertical levels	High level zone	202.56 ± 43.58^a	0.060
		Medium level zone	426.85 ± 123.05^a
		Low level zone	461.44 ± 97.74^a
	Selected rows	Left-most row zone	231.48 ± 47.06^a	0.050
		Middle row zone	339.93 ± 83.09^ab
		Right-most row zone	519.44 ± 55.19^b

MMS, mite monitoring score.

^*Means within a column followed by the same superscript are not significantly different at the 5% level of significance (Duncan test).