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International Introductions of
Umbra krameri Introductions as compiled by FAO |
| Main Ref.: | FAO 1997 | ||||
| To | Poland | ||||
| FAO area | Europe - Inland waters | ||||
| от: | Danube river basin | ||||
| FAO area | Europe - Inland waters | ||||
| год | 1921 | ||||
| Range | - | ||||
| Period | 1950-1974 | ||||
| Established in the wild | probably established, natural reproduction | ||||
| Established in aquaculture | - rarely used | ||||
| Significant ecological interactions | some - adverse | ||||
| Significant socio-economic effects | unknown - | ||||
| Introduced by: | other introducer | ||||
| Reason | accidental | ||||
| Other reason | angling/sport | ||||
| комментарии | Present in a few localities. Invaded small water reservoirs, slowly flowing sections of watercourses, including canals and ditches. Prefers muddy bottom. Tolerates oxygen deficit. Scale of impact is weak however it has displaced several species of limnophilous fishes. Wild population numbers are difficult to estimate because only a few individuals were recorded (Ref. 55773). Also introduced in 1967 (Ref. 92885). Ref: FAO, 1997 | ||||
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