Open Access
Table 1
Results of electrofishing, trapping and manual searching of spiny-cheek crayfish (Orconectes limosus) (water body type: GP − gravel pit, O − oxbow, sex ratio (male:female), CPUE − number of crayfish caught per trap per night, CL range − carapace length (mm) range).
| ID number (Fig. 2) | 1 | 2 | 3 | 4 | 5 | 6 | 7 | Sum/total |
|---|---|---|---|---|---|---|---|---|
| Water type | GP | GP | O | O | GP | O | O | |
| Electrofishing | x | x | x | x | x | x | ||
| Number of crayfish | 6 | 2 | 1 | 9 | ||||
| Sex ratio | 1:2 | |||||||
| CL range | 28–49 | |||||||
| Trapping | x | x | x | x | x | x | x | |
| Number of crayfish | 68 | 12 | 0 | 0 | 14 | 0 | 0 | 94 |
| CPUE | 3.58 | 0.75 | 1.56 | |||||
| Sex ratio | 12.6:1 | 2:1 | 1:2.5 | 3.9:1 | ||||
| CL range | 20–52 | 33–50 | 26–49 | 20–52 | ||||
| Manual searching | x | |||||||
| Number of crayfish | 19 | 19 | ||||||
| Sex ratio | 1.38:1 | 1.38:1 | ||||||
| CL range | 20–45 | 20–45 | ||||||
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