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Table 1 Summary of trapping results and sampling for stable isotope analyses of R. rattus and R. norvegicus in the three habitat types and by site

From: Broad and flexible stable isotope niches in invasive non-native Rattus spp. in anthropogenic and natural habitats of central eastern Madagascar

Type of site

Site name

Season

R. rattus

R. norvegicus

Forest

Anthropogenic steppe

Agricultural field

Forest

Anthropogenic steppe

Agricultural field

Natural forest

Antavibe

Dry

60 (26)

Wet

15 (11)

Avondrona

Dry

11 (11)

Wet

70 (40)

Lakato

Dry

130 (1)

1 (1)

Wet

28 (26)

Sahandambo

Wet

47 (15)

Village

Ambalafary

Dry

156 (37)

16 (4)

2 (2)

Wet

66 (64)

7 (6)

Antanambao

Wet

62 (29)

21 (4)

1 (1)

Antsahatsaka

Dry

68 (3)

95 (1)

7 (7)

Wet

30 (13)

22 (8)

3 (3)

Antsirinala

Dry

22 (12)

15 (10)

1 (1)

Maridaza

Wet

82 (40)

8 (7)

2 (2)

4 (4)

Natural forest-village

Besakay

Dry

90 (0)

104 (2)

35 (0)

Wet

8 (1)

60 (16)

21 (7)

1 (1)

Dry

34 (24)

94 (38)

28 (13)

Mahatsara

Wet

3 (3)

33 (3)

31 (3)

Sahavarina

Dry

17 (10)

20 (11)

60 (43)

2 (2)

Wet

8 (8)

2 (2)

17 (13)

  1. As not all captured animals were sampled for stable isotope analyses, these different values are presented. The first figure under the habitat types is the number of captured individuals based on 600 standard live trap-nights per site and the second figure, in parentheses, is the number of individuals included in the stable isotope analyses. In the “natural forest” sites, traps were limited to forest habitat; in “village” sites, traps were in anthropogenic steppe and agricultural fields; and in “natural forest-village” sites, traps were in all three habitats. -: not present