| 主な資料 | Scott, W.B. and E.J. Crossman, 1973 |
|---|---|
| 意見 | Inhabits gravel and rubble riffles of medium to large rivers and rocky shores of lakes (Ref. 5723). Occasionally enters estuaries (Ref. 5723). Feeds mostly at night and mostly on aquatic insects and benthic invertebrates (Ref. 27547). Generally solitary but large aggregations have been noted (Ref. 27547). Makes regular seasonal migrations associated with spawning (Ref. 27547). Considered a forage fish for some salmonids (Ref. 1998). |
| Marine - Neritic | Marine - Oceanic | Brackishwater | Freshwater | |
|---|---|---|---|---|
| Marine zones / Brackish and freshwater bodies |
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| 基板 | Hard Bottom: rocky; rubble; |
|---|---|
| 基板参照 | Page, L.M. and B.M. Burr, 1991 |
| 特別な生息地 | |
| 特別な習慣 参照 |
| 参照 | |
|---|---|
| 協会 | |
| 関連 | |
| 協会備考 | |
| 寄生 |
| 供給様式 | mainly animals (troph. 2.8 and up) |
|---|---|
| 給餌タイプ 参照 | Scott, W.B. and E.J. Crossman, 1973 |
| 食性 | hunting macrofauna (predator) |
| 食性 参照。 |
| Estimation method | 原本のサンプル | 未漁獲人口 | 意見 | ||
|---|---|---|---|---|---|
| Troph | s.e. | Troph | s.e. | ||
| 餌料組成から | 3.20 | 0.26 | 3.09 | 0.36 | Troph of juv./adults from 1 study. |
| 個々の食物品目から | 3.35 | 0.46 | Trophic level estimated from a number of food items using a randomized resampling routine. | ||
| 参照 | Brown, L.R., S.A. Matern and P.B. Moyle, 1995 | ||||