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Scientific Reports logoLink to Scientific Reports
. 2021 Oct 26;11:21399. doi: 10.1038/s41598-021-00571-5

Publisher Correction: Diet and trophic niche of the invasive signal crayfish in the first invaded Italian stream ecosystem

Fabio Ercoli 1,2,, Daniela Ghia 3, Laura Gruppuso 4, Gianluca Fea 3, Tiziano Bo 5, Timo J Ruokonen 2,6
PMCID: PMC8548545  PMID: 34702892

Correction to: Scientific Reports https://doi.org/10.1038/s41598-021-88073-2, published online 22 April 2021

The original version of this Article contained errors in Table 1 and Table 2.

In Table 1, the division lines between Sites (“S1”, “S2” and “S3”) and Age class (“Adults” and “Juveniles”) was not clear. Each Site had to contain the Age class “Adults” and “Mean”, and “Juveniles” and “Mean” values.

In Table 2, the division lines between Sites (“S1”, “S2” and “S3”) and Food sources was incorrectly placed. Each Site had to contain five Food sources: “Macroinvertebrates”, “Crayfish”, “Detritus”, “Periphyton” and “Macrophytes”.

The original Table 1 and Table 2 and accompanying legends appear below.

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

Table 2.

Mean (± SD) stable isotope values of carbon and nitrogen of food sources at each site in Valla Stream in summer and autumn.

Sites Food sources Summer Autumn
N δ13C δ15N N δ13C δ15N
Macroinvertebrates 3 − 26.74 ± 1.11 3.08 ± 1.28 3 − 29.53 ± 2.33 2.31 ± 0.99
S1 Crayfish − 26.34 ± 0.60 4.66 ± 0.30 − 26.15 ± 0.86 4.71 ± 0.41
Detritus 3 − 28.01 ± 0.05 − 1.57 ± 0.10 3 − 30.01 ± 0.62 − 2.44 ± 0.63
Periphyton − 26.88 ± 1.99 1.91 ± 1.46 3 − 27.32 ± 0.30 0.88 ± 0.12
Macrophytes 3 − 39.61 ± 0.20 1.92 ± 0.35 3 − 39.20 ± 0.10 0.86 ± 0.16
Macroinvertebrates 3 − 27.92 ± 1.89 2.60 ± 1.30 3 − 30.41 ± 2.88 2.72 ± 0.82
S2 Crayfish − 26.47 ± 0.60 4.97 ± 0.55 − 26.76 ± 0.32 4.81 ± 0.54
Detritus 3 − 28.92 ± 0.36 − 2.07 ± 0.03 3 − 29.06 ± 0.46 − 2.62 ± 0.24
Periphyton − 26.88 ± 1.99 1.91 ± 1.46 3 − 28.24 ± 2.16 1.89 ± 1.38
Macrophytes 3 − 40.52 ± 0.72 0.42 ± 0.17 3 − 39.59 ± 0.08 1.10 ± 0.21
Macroinvertebrates 3 − 27.83 ± 1.34 3.95 ± 2.24 3 − 29.52 ± 1.65 3.77 ± 1.08
S3 Crayfish − 26.55 ± 0.76 6.11 ± 1.69 − 26.42 ± 0.52 6.42 ± 0.97
Detritus 3 − 29.18 ± 0.38 − 1.53 ± 0.31 3 − 29.76 ± 0.73 − 2.15 ± 0.31
Periphyton − 26.88 ± 1.99 1.91 ± 1.46 3 − 24.26 ± 0.74 2.65 ± 0.45
Macrophytes 3 − 39.15 ± 0.49 0.34 ± 0.038 3 − 38.85 ± 0.03 0.85 ± 0.18

The original Article has been corrected.


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