Table 1 Signal crayfish mean (± SD) stable isotope values of carbon and nitrogen, carapace length (CL), number of sampled individuals between sexes, age classes, and sites in Valla Stream in summer and autumn.
Seasons | Sites | Age class | Sex | N | CL | δ13C | δ15N |
|---|---|---|---|---|---|---|---|
Summer | Adults | M | 7 | 47.17 ± 14.3 | − 26.38 ± 0.84 | 4.63 ± 0.27 | |
F | 5 | 39.63 ± 10.3 | − 26.53 ± 0.50 | 4.73 ± 0.36 | |||
S1 | Mean values | 44.03 ± 13.3 | − 26.44 ± 0.72 | 4.67 ± 0.32 | |||
Juveniles | M | 5 | 26.41 ± 2.6 | − 26.16 ± 0.30 | 4.89 ± 0.12 | ||
F | 5 | 25.95 ± 2.6 | − 26.28 ± 0.43 | 4.42 ± 0.21 | |||
Mean | 26.18 ± 2.6 | − 26.22 ± 0.38 | 4.65 ± 0.29 | ||||
Adults | M | 9 | 49.53 ± 12.0 | − 26.58 ± 0.70 | 4.91 ± 0.62 | ||
F | 10 | 47.34 ± 7.3 | − 26.67 ± 0.61 | 5.00 ± 0.34 | |||
S2 | Mean | 48.38 ± 9.9 | − 26.62 ± 0.66 | 4.96 ± 0.50 | |||
Juveniles | M | 8 | 25.39 ± 2.9 | − 26.28 ± 0.43 | 5.03 ± 0.56 | ||
F | 12 | 21.58 ± 7.5 | − 26.36 ± 0.56 | 4.95 ± 0.64 | |||
Mean | 23.10 ± 6.4 | − 26.33 ± 0.51 | 4.98 ± 0.61 | ||||
Adults | M | 13 | 43.03 ± 9.0 | − 27.08 ± 0.80 | 6.25 ± 1.60 | ||
F | 12 | 41.63 ± 5.2 | − 26.42 ± 0.44 | 5.13 ± 0.99 | |||
S3 | Mean | 42.36 ± 7.5 | − 26.76 ± 0.73 | 5.71 ± 1.46 | |||
Juveniles | M | 7 | 26.21 ± 2.5 | − 26.53 ± 0.37 | 6.60 ± 1.80 | ||
F | 11 | 21.28 ± 8.8 | − 26.10 ± 0.82 | 6.72 ± 1.86 | |||
Mean | 23.20 ± 7.5 | − 26.27 ± 0.71 | 6.67 ± 1.84 | ||||
Autumn | Adults | M | 3 | 48.97 ± 8.18 | − 27.10 ± 0.88 | 5.03 ± 0.26 | |
F | 3 | 39.38 ± 3.16 | − 26.41 ± 0.21 | 4.69 ± 0.38 | |||
S1 | Mean | 44.18 ± 7.84 | − 26.76 ± 0.72 | 4.86 ± 0.37 | |||
Juveniles | M | 1 | 26.57 | − 25.95 | 4.36 | ||
F | 4 | 19.26 ± 3.78 | − 25.30 ± 0.09 | 4.56 ± 0.43 | |||
Mean | 20.72 ± 4.47 | − 25.43 ± 0.27 | 4.52 ± 0.40 | ||||
Adults | M | 4 | 37.80 ± 4.32 | − 26.77 ± 0.29 | 4.77 ± 0.40 | ||
F | – | – | – | – | |||
S2 | Mean | 37.80 ± 4.32 | − 26.77 ± 0.29 | 4.77 ± 0.40 | |||
Juveniles | M | 3 | 25.76 ± 1.42 | − 26.38 ± 0.28 | 4.75 ± 0.53 | ||
F | 10 | 25.29 ± 2.77 | − 26.86 ± 0.29 | 4.85 ± 0.61 | |||
Mean | 25.40 ± 2.53 | − 26.75 ± 0.34 | 4.82 ± 0.58 | ||||
Adults | M | 4 | 51.38 ± 9.89 | − 26.86 ± 0.70 | 5.97 ± 1.21 | ||
F | 2 | 44.24 ± 11.57 | − 26.50 ± 0.11 | 6.05 ± 1.19 | |||
S3 | Mean | 49.00 ± 11.01 | − 26.74 ± 0.53 | 5.99 ± 0.99 | |||
Juveniles | M | 4 | 24.29 ± 5.34 | − 26.11 ± 0.49 | 6.55 ± 0.85 | ||
F | 5 | 22.97 ± 6.65 | − 26.28 ± 0.42 | 6.83 ± 1.03 | |||
Mean | 23.56 ± 6.14 | − 26.21 ± 0.40 | 6.71 ± 0.86 |
