Information
Ecological parameter: swimming factor
Parameter group: life & body related parameters
Explanation:
The swimming factor is defined as the ratio of the minimum depth of the caudal peduncle to the maximum caudal fin depth. A small ratio indicates a strong swimming capability (thunniform fishes). Three categories are defined.
Poff, N.L.,and J.D. Allan. 1995. Functional organization of stream fish assemblages in relation to hydrologic variability. Ecology 76:606-627.
Type of assignment: single category assignment system ()
A description of the coding system can be found here Abbreviations/Coding Systems
Abbreviations:
| Category name: | Abbreviations: | Explanation: |
|---|---|---|
| < = 0.38 | sw1 | ratio is less than or equal 0.38 (swimming factor 1) |
| 0.38 - 0.43 | sw2 | ratio is between 0.38 and 0.43 (swimming factor 2) |
| > 0.43 | sw3 | ratio is more than 0.43 (swimming factor 3) |
| Taxagroup | Number of assigned taxa / total number of taxa - percentage |
|---|---|
| Acipenseriformes | 3 / 13 - 23% |
| Anguilliformes | 1 / 1 - 100% |
| Atheriniformes | 2 / 4 - 50% |
| Clupeiformes | 2 / 18 - 11.1% |
| Cypriniformes | 35 / 313 - 11.1% |
| Cyprinodontiformes | 2 / 12 - 16.6% |
| Esociformes | 2 / 3 - 66.6% |
| Gasterosteiformes | 2 / 9 - 22.2% |
| Perciformes | 16 / 94 - 17% |
| Petromyzontiformes | 3 / 13 - 23% |
| Pleuronectiformes | 2 / 3 - 66.6% |
| Salmoniformes | 11 / 125 - 8.7% |
| Scorpaeniformes | 1 / 16 - 6.2% |
| Siluriformes | 4 / 7 - 57.1% |