Simultaneous external and internal marking of Triatoma sordida nymphs: trace element efficacy and microgeographic dispersal in a peridomestic Brazilian Cerrado rural household

Table 1 Mean ± standard deviation of natural concentration (as μg/l) of 13 chemical elements in wild Triatoma sordida adults and nymphs (N2–N5) collected in the field site of Posse, Goiás, Brazil

Trace element	Triatoma sordida					Wavelength (nm)	R
	N2	N3	N4	N5	Adult
As	< 0.01	< 0.01	< 0.01	< 0.01	< 0.01	193.759	0.9997
Cd^a	< 0.01	< 0.01	< 0.01	< 0.01	< 0.01	226.502	0.9998
Cr^a	< 0.01	< 0.01	0.01 ± 0.01	0.01 ± 0.01	0.03 ± 0.01	283.563	0.9998
Cu^a	< 0.01	< 0.01	< 0.01	< 0.01	0.08 ± 0.10	324.754	0.9998
Mn	0.04 ± 0.02	0.03 ± 0.01	0.04 ± 0.02	0.03 ± 0.02	0.03 ± 0.01	257.610	0.9999
P	16.35 ± 7.12	42.7 ± 18.8	45.7 ± 31.58	58.6 ± 39.1	102.4 ± 29.04	214.914	0.9998
Pb	0.03 ± 0.01	0.03	0.04 ± 0.01	0.04 ± 0.01	0.06 ± 0.02	220.353	0.9997
Rb	0.08 ± 0.04	0.19 ± 0.09	0.12 ± 0.06	0.26 ± 0.24	0.33 ± 0.17	780.023	0.9997
S	39.7 ± 14.67	109.19 ± 49.72	107.56 ± 80.8	156.71 ± 95	247 ± 129.32	180.731	0.9997
Sb	0.01	0.01	0.01	0.01	0.01	206.833	0.9997
Se	< 0.02	< 0.02	< 0.02	< 0.02	< 0.02	196.090	0.9996
Si	0.32 ± 0.04	0.40 ± 0.08	0.33 ± 0.06	0.38 ± 0.08	0.38 ± 0.06	251.611	0.9999
Zn	0.15 ± 0.06	0.31 ± 0.21	0.56 ± 0.34	0.60 ± 0.46	2.24 ± 0.51	213.856	0.9997

The appropriate wavelength and the fit of the standard curve (R) for each chemical element tested are indicated. Ten specimens were tested per developmental stage. When all ten specimens had the same element concentration, no standard deviation was produced
^aDenotes trace elements selected for the MRR experiment

ISSN: 1756-3305