Table 2 Identifiable black amur bream prey in each size group sorted by taxa. Items with a percentage by weight over 0.1% and percentage by number over 1% are listed.
Food item | Small juvenile (N = 9) | Large juvenile (N = 6) | Sub-adult (N = 15) | Adult (N = 7) |
|---|---|---|---|---|
Percent by weight % (%W, mean ± SD) | ||||
Detritus | 94.1 ± 16.4 | 84.5 ± 33.3 | 96.8 ± 7.0 | 92.7 ± 14.8 |
Chaetophorales | 5.5 ± 16.4 | 1.4 ± 3.0 | 0 | 0 |
Mytiloida | 0 | 13.8 ± 33.9 | 3.1 ± 7.1 | 7.2 ± 14.9 |
Coscinodiscales | 0.2 ± 0.2 | 0.02 ± 0.04 | 0.08 ± 0.15 | 0.05 ± 0.08 |
Araphidiales | 0.2 ± 0.5 | 0.05 ± 0.12 | 0.04 ± 0.08 | 0.01 ± 0.01 |
Ulvales | 0 | 0.1 ± 0.3 | 0 | 0 |
Percent by number % (%N, mean ± SD) | ||||
Coscinodiscales | 53.6 ± 39.3 | 9.4 ± 22.6 | 45.0 ± 32.6 | 50.2 ± 36.7 |
Chaetophorales | 12.5 ± 35.3 | 43.4 ± 49.1 | 0 | 0 |
Chlorococcales | 11.7 ± 26.0 | 0.1 ± 0.3 | 16.0 ± 29.7 | 14.4 ± 21.1 |
Mytiloida | 0 | 16.7 ± 40.8 | 0.02 ± 0.03 | 0.02 ± 0.04 |
Araphidiales | 5.9 ± 12.6 | 2.4 ± 5.8 | 11.7 ± 11.2 | 6.7 ± 7.9 |
Chroococcales | 0.1 ± 0.3 | 0 | 0 | 26.2 ± 38.7 |
Osillatoriales | 1.0 ± 2.9 | 0 | 9.9 ± 17.5 | 0 |
Ulvales | 0 | 6.1 ± 13.5 | 0 | 0 |
Biraphidinales | 4.4 ± 6.5 | 21.8 ± 36.0 | 15.5 ± 30.3 | 1.1 ± 1.7 |
Aulonoraphidinales | 9.3 ± 20.5 | 0 | 0.5 ± 1.5 | 0.4 ± 0.6 |
