Table 1 Commercial compositions by time (number of insects %)
Class | Order | Species | 1934 [34] | 1988 [29] | 2007 Kaneman (can) [25] | 2014 Tsukahara (bottle) | 2014 Green Farm (bottle) |
|---|---|---|---|---|---|---|---|
Insects | Ephemeroptera | 0.6 | 0.9 | − | |||
Trichoptera | 98.2a | ||||||
S. marmorata | 74.2 | 62.3 | 91.7 | 100 | |||
Others | 34.1 | − | − | ||||
Plecoptera | 21 | − | − | − | − | ||
Megaloptera | P. grandis | 3.2 | 2.6 | 1.2 | 1.8b | − | |
Others | 1.6 | − | − | − | |||
Coleoptera | − | − | 5.5c | ||||
Others | − | 1.0 | − | − | − |