Table 1. Characteristics of the methods used to capture and describe the diet of Xenopus laevis.

	South Africa	Wales	France	Chile	Portugal	USA
Population status	Native	Extincta	Invasive	Invasive	Invasive	Invasive
Period of capture	From 06/2014 To-09/2014	From 05/1995 To 08/1996	From 05/2014 To 10/2014	01/1998 03/2001	From 06/2014 To 08/2014	1975–1976
Geographical coordinates
Latitude/Longitude NWb	S34°18′24″ E18°25′35″	N51°27′33″ W3°33′11″	N47°16′14″ W0°33′56″	S33°29′ W70°54′	N38°45′09″ W9°17′27″	See McCoid & Fritts (1980)
Latitude/Longitude SEb	S34°20′06″ E19°04′29″	NA	N46°53′41″ W0°31′11″	S33°37′ W70°39′	N38°42′35″ W9°16′25″	See McCoid & Fritts (1980)
Sampling design
Method	Trap	Trap	Trap	Trap	Electrofishing	NA
Capture occasion/site	From 1 to 4	29	3	1	From 1 to 4	1
Number of sites	8	1	26	2	12	1
Number of individuals	164	375	438	48	352	81
Prey availability	Yes	Yes	Yes	No	No	No
Habitat type	Ponds	Pond	Ponds	Ponds	Streams	Streams
Prey collection method	Flushing/ Dissection	Flushing	Dissection	Dissection	Dissection	Dissection
Published data
Prey frequency in stomachs	Yes	Yes	No	Yes	No	Yes
Niche breadth	Yes	No	No	No	No	No
Electivity	Yes	Yes	No	No	No	No
Individual data
	Yes	No	Yes	Yes	Yes	No

Notes.

^aThe population introduced in Wales went extinct twenty years after the data collection used in our study (Tinsley et al., 2015).

^bGeographical coordinates (WGS 84), northwestern (NW) and southeastern corners (SE), of the minimum rectangle encompassing all sampled sites for N_s > 1.