Table 4.

Seasonal fluctuation of infestations of the Southeast Asian house rat (R. brunneusculus) with five main chigger species at Jingha village in southern Yunnan of China (2016–2017).

Years		2017			2016									Total
Months		1	2	3	4	5	6	7	8	9	10	11	12
Examined hosts		182	167	182	168	184	150	152	151	141	190	197	189	2053
W. (W.) micropelta	mites	2332	3337	4375	3101	4979	2314	3777	1408	1775	2239	1501	1257	32395
	Cr (%)	7.20	10.30	13.51	9.57	15.37	7.14	11.66	4.35	5.48	6.91	4.63	3.88	100.00
	PM (%)	77.47	77.84	78.02	79.76	73.91	78.00	84.21	75.50	81.56	74.74	65.99	65.61	75.65
	MA	12.81	19.98	24.04	18.46	27.06	15.43	24.85	9.32	12.59	11.78	7.62	6.65	15.78
	MI	16.54	25.67	30.81	23.14	36.61	19.78	29.51	12.35	15.43	15.77	11.55	10.14	20.86
A. indica	mites	1860	486	1069	1698	2494	1268	2457	4956	2861	3324	1639	378	24490
	Cr (%)	7.59	1.98	4.37	6.93	10.18	5.18	10.03	20.24	11.68	13.57	6.69	1.54	100.00
	PM (%)	67.58	49.10	66.48	60.71	67.93	68.00	78.95	86.75	89.36	76.84	66.50	53.97	68.73
	MA	10.22	2.91	5.87	10.11	13.55	8.45	16.16	32.82	20.29	17.49	8.32	2.00	11.93
	MI	15.12	5.93	8.83	16.65	19.95	12.43	20.48	37.83	22.71	22.77	12.51	3.71	17.36
L. (L.) deliense	mites	183	11	303	719	1186	3445	4553	927	1136	2605	2315	1484	18867
	Cr (%)	0.97	0.06	1.61	3.81	6.29	18.26	24.13	4.91	6.02	13.81	12.27	7.87	100.00
	PM (%)	43.96	6.59	56.59	61.90	67.39	90.00	88.82	80.13	85.82	85.79	80.71	82.01	68.73
	MA	1.01	0.07	1.66	4.28	6.45	22.97	29.95	6.14	8.06	13.71	11.75	7.85	9.19
	MI	2.29	1.00	2.94	6.91	9.56	25.52	33.73	7.66	9.39	15.98	14.56	9.57	13.37
W. (W.) turmalis	mites	118	165	293	626	1443	367	487	231	435	71	225	136	4597
	Cr (%)	2.57	3.59	6.37	13.62	31.39	7.98	10.59	5.03	9.46	1.54	4.89	2.96	100.00
	PM (%)	33.52	41.32	53.85	57.74	63.04	51.33	65.13	50.33	73.05	23.16	39.59	33.33	47.78
	MA	0.65	0.99	1.61	3.73	7.84	2.45	3.20	1.53	3.09	0.37	1.14	0.72	2.24
	MI	1.93	2.39	2.99	6.45	12.44	4.77	4.92	3.04	4.22	1.61	2.88	2.16	4.69
L. (L.) scutellare	mites	1060	1051	956	10	1	0	1	0	30	0	0	689	3798
	Cr (%)	27.91	27.67	25.17	0.26	0.03	0.00	0.03	0.00	0.79	0.00	0.00	18.14	100.00
	PM (%)	66.48	61.68	67.58	2.38	0.54	0.00	0.66	0.00	16.31	0.00	0.00	59.26	23.77
	MA	5.82	6.29	5.25	0.06	0.01	0.00	0.01	0.00	0.21	0.00	0.00	3.65	1.85
	MI	8.76	10.20	7.77	2.50	1.00	–	1.00	–	1.30	–	–	6.15	7.78