Exploring European Eel Anguilla anguilla (L.) Habitat Differences Using Otolith Analysis in Central-Western Mediterranean Rivers and Coastal Lagoons from Sardinia
Abstract
:1. Introduction
2. Materials and Methods
2.1. Study Locations
2.2. Eel Samples
2.3. Otolith Extraction and Shape Analysis
3. Results
4. Discussion
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Acknowledgments
Conflicts of Interest
References
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Site | River (R) Lagoon (L) | Regime (Only R) | Area (km2) | Dams (Yes/No) (Only R) 1 | Number of Eels |
---|---|---|---|---|---|
Pramaera | R | Perennial | 184 * | no | 26 |
Tirso | R | Perennial | 2043 * | yes | 13 |
Coghinas | R | Perennial | 1836 * | yes | 10 |
Barca | R | Intermittent | 355 * | yes | 10 |
UMannu (Mannu di Fluminumaggiore) | R | Intermittent | 126 * | no | 11 |
Calich | L | 0.9 | 10 | ||
Porto Pino | L | 0.5 | 10 | ||
Sa Praia | L | 0.86 | 10 |
Females | Males | Undifferentiated | ||||
---|---|---|---|---|---|---|
Site | TL (cm) | TW (g) | TL (cm) | TW (g) | TL (cm) | TW (g) |
Pramaera | 49.50–65.00 | 190.00–497.70 | 31.10–41.90 | 50.80–152.20 | 6.80–31.60 | 0.21–51.00 |
Tirso | / | / | / | / | 16.30–32.30 | 6.70–71.90 |
UMannu | / | / | 26.40–34.20 | 20.0–58.40 | / | / |
Barca | 77.20 | 945.65 | 29.30–43.20 | 43.78–143.50 | 28.00 | 31.00 |
Coghinas | / | / | / | / | 11.00–20.50 | 1.22–10.66 |
Calich | 47.30–56.00 | 229.97–450.51 | 33.40–38.40 | 68.70–101.95 | 27.50–30.60 | 40.02–50.40 |
Porto Pino | 26.50–75.50 | 24.50–636.80 | / | / | / | / |
Sa Praia | 56.00–56.50 | 326.30–342.80 | 32.00–39.50 | 51.18–104.40 | 32.1 | 43.58 |
Site | Pramaera | Tirso | UMannu | Barca | Coghinas | Calich | Porto Pino | Sa Praia |
---|---|---|---|---|---|---|---|---|
Tirso | 0.21 | |||||||
UMannu | 0.76 | 0.86 | ||||||
Barca | 1.29 | 1.47 | 0.78 | |||||
Coghinas | 2.52 | 2.59 | 3.16 | 3.18 | ||||
Calich | 2.14 | 2.34 | 1.97 | 1.28 | 2.84 | |||
Porto Pino | 1.98 | 2.18 | 1.93 | 1.33 | 2.52 | 0.32 | ||
Sa Praia | 2.06 | 2.26 | 2.05 | 1.47 | 2.42 | 0.43 | 0.16 |
Pramaera | Tirso | UMannu | Barca | Coghinas | Calich | Porto Pino | Sa Praia | |
---|---|---|---|---|---|---|---|---|
Pramaera | 0.767 ± 0.063 | ns | ns | ns | ns | ns | * | ns |
Tirso | 1 | 0.777 ± 0.044 | ns | ns | ns | ns | * | ns |
UMannu | 1 | 1 | 0.794 ± 0.041 | ns | ns | ns | ns | ns |
Barca | 1 | 1 | 1 | 0.763 ± 0.067 | ns | ns | ns | ns |
Coghinas | 1 | 1 | 1 | 1 | 0.794 ± 0.038 | * | * | ns |
Calich | 0.14 | 0.08 | 0.19 | 1 | 0.04 | 0.704 ± 0.055 | ns | ns |
Porto Pino | 0.03 | 0.02 | 0.06 | 0.90 | 0.01 | 1 | 0.695 ± 0.055 | ns |
Sa Praia | 0.44 | 0.24 | 0.49 | 1 | 0.14 | 1 | 1 | 0.720 ± 0.071 |
Pramaera | Tirso | UMannu | Barca | Coghinas | Calich | Porto Pino | Sa Praia | |
---|---|---|---|---|---|---|---|---|
Pramaera | 0.642 ± 0.073 | ns | ns | ns | ns | ns | * | * |
Tirso | 1 | 0.660 ± 0.032 | ns | ns | ns | * | * | ** |
UMannu | 1 | 1 | 0.639 ± 0.040 | ns | ns | ns | ns | ns |
Barca | 1 | 1 | 1 | 0.616 ± 0.051 | ns | ns | ns | ns |
Coghinas | 1 | 1 | 1 | 0.30 | 0.705 ± 0.035 | ** | *** | *** |
Calich | 0.07 | 0.03 | 0.39 | 1 | 0.002 | 0.580 ± 0.034 | ns | ns |
Porto Pino | 0.03 | 0.01 | 0.19 | 1 | <0.001 | 1 | 0.573 ± 0.015 | ns |
Sa Praia | 0.01 | 0.007 | 0.12 | 1 | <0.001 | 1 | 1 | 0.574 ± 0.041 |
Pramaera | Tirso | UMannu | Barca | Coghinas | Calich | Porto Pino | Sa Praia | |
---|---|---|---|---|---|---|---|---|
Pramaera | 0.744 ± 0.018 | ns | ns | ns | ns | ns | ns | ns |
Tirso | 1 | 0.742 ± 0.012 | ns | ns | ns | ns | ns | ns |
UMannu | 1 | 1 | 0.741 ± 0.012 | ns | ns | ns | ns | ns |
Barca | 1 | 1 | 1 | 0.745 ± 0.016 | ns | ns | ns | ns |
Coghinas | 1 | 1 | 1 | 1 | 0.739 ± 0.013 | ns | ns | ns |
Calich | 1 | 1 | 1 | 1 | 1 | 0.733 ± 0.024 | ns | ns |
Porto Pino | 1 | 1 | 1 | 1 | 1 | 1 | 0.745 ± 0.044 | ns |
Sa Praia | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0.750 ± 0.021 |
Pramaera | Tirso | UMannu | Barca | Coghinas | Calich | Porto Pino | Sa Praia | |
---|---|---|---|---|---|---|---|---|
Pramaera | 0.326 ± 0.088 | ns | ns | ns | ns | ns | ns | ns |
Tirso | 1 | 0.347 ± 0.069 | ns | ns | ns | ns | ns | ns |
UMannu | 1 | 1 | 0.298 ± 0.061 | ns | ns | ns | ns | * |
Barca | 0.45 | 1 | 0.15 | 0.424 ± 0.060 | ns | ns | ns | ns |
Coghinas | 1 | 1 | 1 | 1 | 0.347 ± 0.68 | ns | ns | ns |
Calich | 1 | 1 | 0.73 | 1 | 1 | 0.414 ± 0.166 | ns | ns |
Porto Pino | 0.39 | 1 | 0.07 | 1 | 1 | 1 | 0.439 ± 0.116 | ns |
Sa Praia | 0.07 | 0.61 | 0.03 | 1 | 1 | 1 | 1 | 0.460 ± 0.086 |
Pramaera | Tirso | UMannu | Barca | Coghinas | Calich | Porto Pino | Sa Praia | |
---|---|---|---|---|---|---|---|---|
Pramaera | 0.496 ± 0.126 | ns | ns | ns | ns | ns | ns | ns |
Tirso | 1 | 0.469 ± 0.099 | ns | ns | ns | ns | ns | ns |
UMannu | 1 | 1 | 0.390 ± 0.184 | ns | ns | * | ns | ns |
Barca | 1 | 1 | 0.49 | 0.549 ± 0.088 | ns | ns | ns | ns |
Coghinas | 1 | 1 | 1 | 1 | 0.471 ± 0.088 | ns | ns | ns |
Calich | 1 | 0.36 | 0.04 | 1 | 0.89 | 0.694 ± 0.223 | ns | ns |
Porto Pino | 1 | 1 | 0.31 | 1 | 1 | 1 | 0.556 ± 0.145 | ns |
Sa Praia | 1 | 0.51 | 0.07 | 1 | 1 | 1 | 1 | 0.587 ± 0.188 |
Pramaera | Tirso | UMannu | Barca | Coghinas | Calich | Porto Pino | Sa Praia | |
---|---|---|---|---|---|---|---|---|
Pramaera | 0.693 ± 0.154 | ** | * | ns | ns | ns | ns | ns |
Tirso | 0.007 | 0.476 ± 0.095 | ns | ns | ns | ns | ns | ns |
UMannu | 0.01 | 1 | 0.421 ± 0.180 | ns | ns | ns | ns | ns |
Barca | 1 | 1 | 1 | 0.581 ± 0.100 | ns | ns | ns | ns |
Coghinas | 0.10 | 1 | 1 | 1 | 0.488 ± 0.094 | ns | ns | ns |
Calich | 1 | 0.08 | 0.13 | 1 | 0.46 | 0.729 ± 0.234 | ns | ns |
Porto Pino | 1 | 0.45 | 0.66 | 1 | 1 | 1 | 0.605 ± 0.140 | ns |
Sa Praia | 1 | 0.52 | 0.75 | 1 | 1 | 1 | 1 | 0.546 ± 0.168 |
Pramaera | Tirso | UMannu | Barca | Coghinas | Calich | Porto Pino | Sa Praia | |
---|---|---|---|---|---|---|---|---|
Pramaera | 6.00 ± 3.50 | * | ns | ns | **** | ns | ns | ns |
Tirso | 0.01 | 3.58 ± 0.84 | ns | ns | ns | **** | ** | ns |
UMannu | 0.33 | 1 | 3.70 ± 1.33 | ns | ns | ** | ns | ns |
Barca | 1 | 0.87 | 1 | 5.29 ± 1.03 | * | ns | ns | ns |
Coghinas | <0.0001 | 1 | 1 | 0.03 | 7.60 ± 2.86 | **** | **** | *** |
Calich | 0.72 | <0.0001 | 0.002 | 0.31 | <0.0001 | 9.15 ± 1.77 | ns | ns |
Porto Pino | 1 | 0.002 | 0.57 | 1 | <0.0001 | 1 | 6.81 ± 2.16 | ns |
Sa Praia | 1 | 0.57 | 0.65 | 1 | <0.001 | 1 | 1 | 5.90 ± 2.64 |
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Podda, C.; Culurgioni, J.; Diciotti, R.; Palmas, F.; Amilhat, E.; Faliex, E.; Morat, F.; Fois, N.; Sabatini, A. Exploring European Eel Anguilla anguilla (L.) Habitat Differences Using Otolith Analysis in Central-Western Mediterranean Rivers and Coastal Lagoons from Sardinia. Fishes 2023, 8, 386. https://doi.org/10.3390/fishes8080386
Podda C, Culurgioni J, Diciotti R, Palmas F, Amilhat E, Faliex E, Morat F, Fois N, Sabatini A. Exploring European Eel Anguilla anguilla (L.) Habitat Differences Using Otolith Analysis in Central-Western Mediterranean Rivers and Coastal Lagoons from Sardinia. Fishes. 2023; 8(8):386. https://doi.org/10.3390/fishes8080386
Chicago/Turabian StylePodda, Cinzia, Jacopo Culurgioni, Riccardo Diciotti, Francesco Palmas, Elsa Amilhat, Elisabeth Faliex, Fabien Morat, Nicola Fois, and Andrea Sabatini. 2023. "Exploring European Eel Anguilla anguilla (L.) Habitat Differences Using Otolith Analysis in Central-Western Mediterranean Rivers and Coastal Lagoons from Sardinia" Fishes 8, no. 8: 386. https://doi.org/10.3390/fishes8080386