Table 2.

Catch per unit effort over time (CPUE) in Pampa del Indio, Chaco, Argentina, 2008–2011

Date of survey	National traps			Sherman traps
	No. trap-nights	No. captured	CPUE* ± SE	No. trap-nights	No. captured	CPUE* ± SE
August 2008	1,599	23	1.44 ± 0.29	440	13	2.95 ± 0.80
August 2009	1,660	11	0.66 ± 0.20	1,413	12	0.85 ± 0.24
August 2010	226	5	2.21 ± 0.97	–	–	–
March 2011	1,130	28	2.48 ± 0.46	1,278	31	2.43 ± 0.43
Total	4,615	67	1.45 ± 0.18	3,131	56	1.79 ± 0.23

^*Animals per 100 trap-nights.