Table 1 Result of fecal analysis. FO, frequency of occurrence of items and NI, number of prey items.

From: Predation on endangered species by human-subsidized domestic cats on Tokunoshima Island

Items FO (%) NI Contribution to DCB (%) body weight (g) IUCN Red List 2017 Reference for
body weight
TOTAL
(n = 198)
feral
(n = 174)
stray
(n = 24)
TOTAL
(n = 198)
feral
(n = 174)
stray
(n = 24)
Forest species 17.7 20.1 0.0 40 40 0 15.5    
Diplothrix legata 6.1 6.9 0.0 12 12 0 7.7 483 EN 27
Pentalagus furnessi 4.0 4.6 0.0 8 8 0 6.7 2880* EN 75
Tokudaia tokunoshimensis 3.0 3.4 0.0 6 6 0 1.3 162.4 EN Yamada (unpublished)
Erithacus komadori komadori 0.5 0.6 0.0 1 1 0 0.0 22.4 VU 55
Turdus pallidus 0.5 0.6 0.0 1 1 0 0.1 78   27
Odorrana amamiensis 0.5 0.6 0.0 1 1 0 0.1 60 VU 76
Diestrammena gigas 5.1 5.7 0.0 10 10 0 0.0 3   76
Thereuopoda clunifera 0.5 0.6 0.0 1 1 0 0.0 3.5   27
Farmland species 30.8 31.6 20.8 70 65 5 8.7    
Rattus rattus 24.2 26.4 20.8 53 48 5 6.9 98   **
Crocidura spp. 6.6 7.5 0.0 15 15 0 0.1 7 (C. orii) EN
(C. watase) NT
77
Gallus gallus domesticus 1.0 1.1 0.0 2 2 0 1.7 1500-*   78
Unknown        
Horornis diphone 1.0 1.1 0.0 2 2 0 0.0 15.8   79
Unidentified birds 15.7 17.8 0.0 31 31 0  
Amphibians/Reptiles 3.5 4.0 0.0 7 7 0  
Orthoptera 8.6 6.3 25.0 17 11 6  
Mantodea 1.0 1.1 0.0 2 2 0  
Coleoptera 3.0 2.9 4.2 6 5 1  
Unidentified insects 41.4 46.6 4.2 82 81 1  
Crustacea 1.5 1.7 0.0 3 3 0  
Gastropods 0.5 0.0 4.2 1 0 1  
Artificial objects 23.7 24.1 20.8 47 42 5  
Plants 42.4 32.2 50.0 84 72 12  
  1. *As these species (Pentalagus furnessi and Gallus domesticus) were heavier than the max DCB, we used max DCB to calculate the contribution to DCB.
  2. **We calculated the mean body weight of the captured Rattus rattus (n = 12).