Table 2.
Numbers of marked, and recaptured, signal crayfish, as well as sex ratios and summary statistics for carapace length.
| Stream and site | Total crayfish marked | Recaptured crayfish | ||||
|---|---|---|---|---|---|---|
| N | Sex ratio (M:F) | Carapace length (mm; Mean ± SD and range) | N | Sex ratio (M:F) | Carapace length (mm; Mean ± SD and range) | |
|
Westholme, Fully-established |
130 | 1:1.20 |
33.1 ± 5.6 (23.0–55.6) |
41 | 1:0.58 |
31.8 ± 4.6 (23.4–48.2) |
|
Thorsgill, Newly-established |
90 | 1:0.80 |
35.7 ± 6.4 (24.5–59.1) |
32 | 1:1.13 |
35.2 ± 5.7 (24.5–47.5) |
|
Thorsgill, Invasion front |
90 | 1:0.58 |
38.6 ± 7.9 (25.9–59.8) |
25 | 1:0.67 |
39.9 ± 7.8 (31.2–59.8) |
| Overall | 310 | 1:0.87 |
35.44 ± 6.9 (23.0–59.8) |
98 | 1:0.78 |
35.24 ± 6.9 23.4–59.8 |