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Cicala D, Guerra MT, Bardelli R, Di Muri C, Ludovisi A, Vizzini S, Mancinelli G. Isotopic Overlap of Invasive and Native Consumers in the Food Web of Lake Trasimeno (Central Italy). BIOLOGY 2023; 12:1270. [PMID: 37759667 PMCID: PMC10525863 DOI: 10.3390/biology12091270] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/11/2023] [Revised: 09/11/2023] [Accepted: 09/18/2023] [Indexed: 09/29/2023]
Abstract
An advanced characterization of the trophic niche of non-indigenous species (NIS) may provide useful information on their ecological impact on invaded communities. Here, we used carbon and nitrogen stable isotopes to estimate pairwise niche overlaps between non-indigenous and native consumers in the winter food web of Lake Trasimeno (central Italy). Overall, a relatively low pairwise overlap of isotopic niches was observed between NIS and native species. The only exception was the Louisiana crayfish Procambarus clarkii, which showed a relatively high and diffuse overlap with other native invertebrates. Our findings highlighted a high niche divergence between non-indigenous and native species in Lake Trasimeno, suggesting a potentially low degree of interspecific competition that may facilitate coexistence and, in turn, limit the strength of impacts. The divergent results obtained for the Louisiana crayfish indicate that additional control measures for this invasive species are needed to mitigate its impact on the Lake Trasimeno system.
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Affiliation(s)
- Davide Cicala
- Department of Biology, University of Rome Tor Vergata, Via della Ricerca Scientifica 1, 00133 Rome, Italy;
| | - Maria Teresa Guerra
- Department of Biological and Environmental Sciences and Technologies—DiSTeBA, University of Salento, SP Lecce-Monteroni, 73100 Lecce, Italy;
| | - Roberta Bardelli
- Department of Earth and Marine Sciences—DiSTeM, University of Palermo, Via Archirafi 22, 90133 Palermo, Italy; (R.B.); (S.V.)
| | - Cristina Di Muri
- Italian National Research Council, Institute of Research on Terrestrial Ecosystems—CNR-IRET, University of Salento, SP Lecce-Monteroni, 73100 Lecce, Italy;
| | - Alessandro Ludovisi
- Department of Chemistry, Biology and Biotechnologies, University of Perugia, Via Elce di Sotto 8, 06123 Perugia, Italy;
| | - Salvatrice Vizzini
- Department of Earth and Marine Sciences—DiSTeM, University of Palermo, Via Archirafi 22, 90133 Palermo, Italy; (R.B.); (S.V.)
- Consorzio Nazionale Interuniversitario per le Scienze del Mare—CoNISMa, Piazzale Flaminio 9, 00196 Rome, Italy
| | - Giorgio Mancinelli
- Department of Biological and Environmental Sciences and Technologies—DiSTeBA, University of Salento, SP Lecce-Monteroni, 73100 Lecce, Italy;
- Consorzio Nazionale Interuniversitario per le Scienze del Mare—CoNISMa, Piazzale Flaminio 9, 00196 Rome, Italy
- Italian National Research Council, Institute of Marine Biological Resources and Biotechnologies—CNR-IRBIM, Via Pola 4, 71010 Lesina, Italy
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Bussmann K, Hirsch PE, Lehmann MF, Burkhardt‐Holm P. Differential habitat use of a notorious invasive fish, the round goby, in a translocation‐relevant system. Ecol Evol 2022. [DOI: 10.1002/ece3.9202] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Affiliation(s)
- Karen Bussmann
- Department Environmental Sciences, Program Man‐Society‐Environment University of Basel Basel Switzerland
| | - Philipp Emanuel Hirsch
- Department Environmental Sciences, Program Man‐Society‐Environment University of Basel Basel Switzerland
| | - Moritz F. Lehmann
- Department Environmental Sciences, Aquatic and Isotope Biogeochemistry University of Basel Basel Switzerland
| | - Patricia Burkhardt‐Holm
- Department Environmental Sciences, Program Man‐Society‐Environment University of Basel Basel Switzerland
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Paz‐Vinas I, Lang I, Millet P, Veyssière C, Loot G, Cucherousset J. Inference of local invasion pathways in two invasive crayfish species displaying contrasting genetic patterns. J Appl Ecol 2021. [DOI: 10.1111/1365-2664.14023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Ivan Paz‐Vinas
- Laboratoire Évolution et Diversité Biologique (EDB) UPS CNRS IRD Université de Toulouse UMR 5174 Toulouse France
| | - Iris Lang
- Laboratoire Évolution et Diversité Biologique (EDB) UPS CNRS IRD Université de Toulouse UMR 5174 Toulouse France
| | - Paul Millet
- Laboratoire Évolution et Diversité Biologique (EDB) UPS CNRS IRD Université de Toulouse UMR 5174 Toulouse France
| | - Charlotte Veyssière
- Laboratoire Évolution et Diversité Biologique (EDB) UPS CNRS IRD Université de Toulouse UMR 5174 Toulouse France
| | - Géraldine Loot
- Laboratoire Évolution et Diversité Biologique (EDB) UPS CNRS IRD Université de Toulouse UMR 5174 Toulouse France
- Institut Universitaire de France Paris France
| | - Julien Cucherousset
- Laboratoire Évolution et Diversité Biologique (EDB) UPS CNRS IRD Université de Toulouse UMR 5174 Toulouse France
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Mancini F, De Giorgi R, Ludovisi A, Vizzini S, Mancinelli G. Ontogenetic shift in the trophic role of the invasive killer shrimp Dikerogammarus villosus: a stable isotope study. Biol Invasions 2021. [DOI: 10.1007/s10530-021-02472-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
AbstractThe introduction of the amphipod Dikerogammarus villosus in European fresh waters is to date recognized as a threat to the integrity of invaded communities. Predation by D. villosus on native benthic invertebrates is assumed as the key determinant of its ecological impact, yet available information describe the species as a primary consumer as well as a carnivore depending on local conditions. Here, we assessed the trophic position (TP) of D. villosus in Lake Trasimeno, a recently invaded lentic system in central Italy, using the CN isotopic signatures of individuals captured in winter spanning two orders of magnitude in body size. TP estimations were compared with those characterizing the native amphipod Echinogammarus veneris and other representative invertebrate predators. On average, D. villosus showed a trophic position higher than E. veneris, and comparable with that of odonate nymphs. An in-depth analysis revealed that large-sized individuals had a trophic position of 3.07, higher than odonates and close to that of the hirudinean predator Erpobdella octoculata, while small-sized specimens had a trophic position of 2.57, similar to that of E. veneris (2.41). These findings indicate that size-related ontogenetic shifts in dietary habits may per se vary the nature of the interaction between Dikerogammarus villosus and native invertebrates from competition to predation. Information collated from published isotopic studies corroborated the generality of our results. We conclude that intra-specific trophic flexibility may potentially amplify and make more multifaceted the impact of the species on other invertebrate species in invaded food webs.
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