Scheda di dettaglio – i prodotti della ricerca
| Dato | Valore |
|---|---|
| Title | Roach in Lake Maggiore: a peaceful invasion detected with C, N stable isotope analysis |
| Abstract | Invasions by non-native species are increasingly detected all over the World, as a consequence of globalization. Successful establishment implies the presence of unexploited niches and/or competitive advantage of invader vs. native closely related species. As a consequence, invasion also impacts functional diversity and trophic relationships in ecosystems. Feeding niche is a relevant component of ecological niche; it can be investigated by means of C, N stable isotopes analyses (SIA). Here we present results of a study in which feeding niche of the invader Rutius rutilus is compared with those of Coregone lavaretus and Alosa agone. in a deep, subalpine lake (Lago Maggiore, Italy). By applying SIA we quantified seasonal shifts in pelagic vs. littoral diet sources and in their percentage contributions for the three species. Feeding plasticity, namely spatial and temporal displacement, allowed for a peaceful coexistence of the invader and the other two potential competitors. |
| Source | Global journal of science frontier research 13 (9-1) |
| Keywords | Non-native speciesCompetitionTrophic nicheStable isotope analysisFreshwater fish |
| Journal | Global journal of science frontier research |
| Editor | Global Journals, Indore, India |
| Year | 2013 |
| Type | Articolo in rivista |
| Authors | Anna Visconti; Pietro Volta; Amedeo Fadda; Marina Manca |
| Text | 287941 2013 Non native species Competition Trophic niche Stable isotope analysis Freshwater fish Roach in Lake Maggiore a peaceful invasion detected with C, N stable isotope analysis Anna Visconti; Pietro Volta; Amedeo Fadda; Marina Manca CNR ISE VB Invasions by non native species are increasingly detected all over the World, as a consequence of globalization. Successful establishment implies the presence of unexploited niches and/or competitive advantage of invader vs. native closely related species. As a consequence, invasion also impacts functional diversity and trophic relationships in ecosystems. Feeding niche is a relevant component of ecological niche; it can be investigated by means of C, N stable isotopes analyses SIA . Here we present results of a study in which feeding niche of the invader Rutius rutilus is compared with those of Coregone lavaretus and Alosa agone. in a deep, subalpine lake Lago Maggiore, Italy . By applying SIA we quantified seasonal shifts in pelagic vs. littoral diet sources and in their percentage contributions for the three species. Feeding plasticity, namely spatial and temporal displacement, allowed for a peaceful coexistence of the invader and the other two potential competitors. 13 Published version In Global Journal of Science Frontier Research Agriculture and Veterinary, vol. 13 9 1 Global Journal of Science Frontier Research, 2013. Articolo GJFR_13_9_pag.pdf Articolo in rivista Global Journals 0975 5896 Global journal of science frontier research Global journal of science frontier research Glob. j. sci. front. res. Global journal of science frontier research. VISCONTI ANNA pietro.volta VOLTA PIETRO marinamarcella.manca MANCA MARINA MARCELLA TA.P04.016.004 Ecologia teorica e applicata degli ecosistemi acquatici |