A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
Diet and trophic niche of the invasive signal crayfish in the first invaded Italian stream ecosystem (2021)
Ercoli, F., Ghia, D., Gruppuso, L., Fea, G., Bo, T., & Ruokonen, T. J. (2021). Diet and trophic niche of the invasive signal crayfish in the first invaded Italian stream ecosystem. Scientific Reports, 11, Article 8704. https://doi.org/10.1038/s41598-021-88073-2
JYU-tekijät tai -toimittajat
Julkaisun tiedot
Julkaisun kaikki tekijät tai toimittajat: Ercoli, Fabio; Ghia, Daniela; Gruppuso, Laura; Fea, Gianluca; Bo, Tiziano; Ruokonen, Timo J.
Lehti tai sarja: Scientific Reports
eISSN: 2045-2322
Julkaisuvuosi: 2021
Ilmestymispäivä: 22.04.2021
Volyymi: 11
Artikkelinumero: 8704
Kustantaja: Nature Publishing Group
Julkaisumaa: Britannia
Julkaisun kieli: englanti
DOI: https://doi.org/10.1038/s41598-021-88073-2
Julkaisun avoin saatavuus: Avoimesti saatavilla
Julkaisukanavan avoin saatavuus: Kokonaan avoin julkaisukanava
Julkaisu on rinnakkaistallennettu (JYX): https://jyx.jyu.fi/handle/123456789/75216
Lisätietoja: Publisher Correction: Diet and trophic niche of the invasive signal crayfish in the first invaded Italian stream ecosystem
Scientific Reports volume 11, Article number: 21399 (2021) http://dx.doi.org/10.1038/s41598-021-00571-5
Author Correction: Diet and trophic niche of the invasive signal crayfish in the first invaded Italian stream ecosystem http://dx.doi.org/10.1038/s41598-023-29693-8
Tiivistelmä
The occurrence of the signal crayfish Pacifastacus leniusculus in the Valla Stream was the first established population of this invasive species recorded in an Italian stream ecosystem. We evaluated the seasonality of diet and trophic niche of invasive signal crayfish in order to estimate the ecological role and effects on native communities of the stream ecosystem. We studied the differences in food source use between sexes, life stages and seasons using carbon and nitrogen stable isotope analyses. To supplement stable isotope analyses, we evaluated food source usage using traditional stomach content analysis. We tested the hypothesis that juveniles have a different diet, showing different trophic niches, compared to adults. Results indicated that signal crayfish adult and juvenile diets mainly rely on macroinvertebrates and periphyton in summer, shifting to mostly periphyton in autumn. Although the two age classes occupied an equivalent trophic niche, juveniles showed slightly different carbon isotope values, suggesting a somewhat ontogenetic shift consistent among seasons. No significant differences were found in adult and juvenile diets between summer and autumn seasons. Our findings suggest that signal crayfish juveniles and adults exhibited seasonal feeding habits, probably due to ecological behaviour rather than food resource availability, and that both are likely to impose similar effects on macroinvertebrate communities in this and similar stream ecosystems.
YSO-asiasanat: vesiekologia; vesiekosysteemit; purot; vieraslajit; täplärapu; ravintoverkot; ekologinen lokero; isotooppianalyysi
Vapaat asiasanat: freshwater ecology; invasive species; stable isotope analysis
Liittyvät organisaatiot
Hankkeet, joissa julkaisu on tehty
- TOWARDS RESEARCH EXCELLENCE AND INNOVATION CAPACITY IN STUDING LAKE ECOSYSTEMS FUNCTIONAL STRUCTURES AND CLIMATE CHANGE IMPACT
- Kuparinen, Anna
- Euroopan komissio
OKM-raportointi: Kyllä
Raportointivuosi: 2021
JUFO-taso: 1