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Rumolo P, Zappes IA, Fabiani A, Barra M, Rakaj A, Palozzi R, Allegrucci G. The diet of Weddell seals (Leptonychotes weddellii) in Terra Nova Bay using stable isotope analysis. The European Zoological Journal 2020. [DOI: 10.1080/24750263.2020.1720832] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
Affiliation(s)
- P. Rumolo
- Istituto di Scienze Marine (ISMAR), Consiglio Nazionale delle Ricerche, Naples, Italy
| | - I. A. Zappes
- Department of Biology, University of Rome Tor Vergata, Rome, Italy
| | - A. Fabiani
- Department of Biology, University of Rome Tor Vergata, Rome, Italy
| | - M. Barra
- Istituto di Scienze Marine (ISMAR), Consiglio Nazionale delle Ricerche, Naples, Italy
| | - A. Rakaj
- Department of Biology, University of Rome Tor Vergata, Rome, Italy
| | - R. Palozzi
- Department of Biology, University of Rome Tor Vergata, Rome, Italy
| | - G. Allegrucci
- Department of Biology, University of Rome Tor Vergata, Rome, Italy
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Rumolo P, Bonanno A, Barra M, Fanelli E, Calabrò M, Genovese S, Ferreri R, Mazzola S, Basilone G. Spatial variations in feeding habits and trophic levels of two small pelagic fish species in the central Mediterranean Sea. Mar Environ Res 2016; 115:65-77. [PMID: 26895386 DOI: 10.1016/j.marenvres.2016.02.004] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/19/2015] [Revised: 02/05/2016] [Accepted: 02/07/2016] [Indexed: 06/05/2023]
Abstract
Trophic ecology of adults of European sardine (Sardina pilchardus) and anchovy (Engraulis encrasicolus) was examined and compared among various regions of central Mediterranean Sea. Carbon and nitrogen stable isotope analyses (δ(13)C and δ(15)N) were adopted as a tool to determine changes in feeding behaviour of adults of sardines and anchovies. In the study period (summer) a clear geographical pattern was recognized in the isotopic composition of both species, with an increasing trend northward. The highest variations in isotopic signal were linked to the geographical positions of the samples and, especially, between pairs of areas: South Sicily/South Campania and Gulf of Gaeta/South Elba. Higher isotope values were found in the anchovies and sardines caught in northern Tyrrhenian Sea, while lower values were mostly estimated in the southern region. Higher carbon and nitrogen isotopes may reflect a more coastal behaviour of both species, being (13)C-enriched source from benthic primary producers in addition to phytoplankton. Variations in the nitrogen isotope ratio may reflect not only differences in the trophic level of prey species, but also variations in the baseline level of food webs. Our results support the hypothesis that feeding behaviour of both species is directly or indirectly influenced by local factors, or by resource partitioning based on zooplankton size. Findings can supply knowledge needed for improving fish stock management and promoting plans able to take into account also local ecosystem analysis.
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Affiliation(s)
- P Rumolo
- Istituto per l'Ambiente Marino Costiero, Consiglio Nazionale delle Ricerche, Calata Porta di Massa, 80100, Naples, Italy
| | - A Bonanno
- Istituto per l'Ambiente Marino Costiero, Consiglio Nazionale delle Ricerche, UOS di Capo Granitola, Via del Mare, 3 Torretta Granitola, 91021, Campobello di Mazara, Italy.
| | - M Barra
- Istituto per l'Ambiente Marino Costiero, Consiglio Nazionale delle Ricerche, Calata Porta di Massa, 80100, Naples, Italy
| | - E Fanelli
- ENEA, Marine Environment Research Centre, Santa Teresa Pozzuolo di Lerici, 19100, La Spezia, Italy
| | - M Calabrò
- Istituto per l'Ambiente Marino Costiero, Consiglio Nazionale delle Ricerche, UOS di Capo Granitola, Via del Mare, 3 Torretta Granitola, 91021, Campobello di Mazara, Italy
| | - S Genovese
- Istituto per l'Ambiente Marino Costiero, Consiglio Nazionale delle Ricerche, UOS di Capo Granitola, Via del Mare, 3 Torretta Granitola, 91021, Campobello di Mazara, Italy
| | - R Ferreri
- Istituto per l'Ambiente Marino Costiero, Consiglio Nazionale delle Ricerche, UOS di Capo Granitola, Via del Mare, 3 Torretta Granitola, 91021, Campobello di Mazara, Italy
| | - S Mazzola
- Istituto per l'Ambiente Marino Costiero, Consiglio Nazionale delle Ricerche, UOS di Capo Granitola, Via del Mare, 3 Torretta Granitola, 91021, Campobello di Mazara, Italy
| | - G Basilone
- Istituto per l'Ambiente Marino Costiero, Consiglio Nazionale delle Ricerche, UOS di Capo Granitola, Via del Mare, 3 Torretta Granitola, 91021, Campobello di Mazara, Italy
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Rumolo P, Barra M, Gherardi S, Marsella E, Sprovieri M. Stable isotopes and C/N ratios in marine sediments as a tool for discriminating anthropogenic impact. ACTA ACUST UNITED AC 2011; 13:3399-408. [DOI: 10.1039/c1em10568j] [Citation(s) in RCA: 74] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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