Floodplains as a Suitable Habitat for Freshwater Fish: The Length–Weight Relationships and Condition Factors of Fish Inhabiting a Danube Floodplain in Croatia
Abstract
:1. Introduction
2. Materials and Methods
2.1. Study Area
2.2. Sampling
2.3. Length–Weight Relationship
2.4. Condition Factors
2.5. Statistical Analysis
3. Results
4. Discussion
5. Conclusions
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Acknowledgments
Conflicts of Interest
References
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Family | Species | N | Total Length Range [cm] | Total Weight Range [g] | ||||
---|---|---|---|---|---|---|---|---|
Min | Max | Mean | Min | Max | Mean | |||
CENTRARCHIDAE | Lepomis gibbosus (Linnaeus, 1758) | 165 | 4.5 | 11.2 | 6.7 ± 1.2 | 1.1 | 26.0 | 5.1 ± 3.8 |
COBITIDAE | Cobitis elongatoides (Băcescu and Mayer, 1969) | 7 | 8.6 | 10.0 | 9.3 ± 0.5 | 3.0 | 6.0 | 3.9 ± 1.1 |
CYPRINIDAE | Carassius gibelio (Bloch, 1782) | 4530 | 3.5 | 44.4 | 9.9 ± 9.1 | 1.0 | 1535.0 | 100.9 ± 274.5 |
Cyprinus carpio (Linnaeus, 1758) | 515 | 4.0 | 28.0 | 9.6 ± 2.9 | 1.1 | 305.0 | 14.0 ± 10.7 | |
GOBIONIDAE | Pseudorasbora parva (Temminck and Schlegel, 1846) | 899 | 4.9 | 11.7 | 7.8 ± 0.9 | 1.1 | 13.0 | 3.9 ± 1.6 |
ESOCIDAE | Esox lucius (Linnaeus, 1758) | 49 | 23.2 | 73.2 | 47.1 ± 9.6 | 75.0 | 3000.0 | 940.4 ± 560.8 |
ICTALURIDAE | Ameiurus nebulosus (Lesueur, 1819) | 21 | 9.6 | 24.5 | 18.7 ± 2.4 | 12.0 | 214.0 | 107.9 ± 44.7 |
LEUCISCIDAE | Abramis brama (Linnaeus, 1758) | 64 | 4.8 | 45.5 | 10.4 ± 6.1 | 1.1 | 1415.0 | 32.4 ± 182.6 |
Alburnus albidus (Costa, 1838) | 5 | 11.2 | 13.2 | 12.3 ± 0.8 | 8.2 | 24.2 | 16.9 ± 6.2 | |
Alburnus alburnus (Linnaeus, 1758) | 3078 | 5.5 | 16.6 | 9.3 ± 1.8 | 1.0 | 30.0 | 5.4 ± 3.7 | |
Leuciscus aspius (Linnaeus, 1758) | 335 | 8.0 | 69.0 | 20.1 ± 11.6 | 3.0 | 3765.0 | 192.2 ± 584.8 | |
Blicca bjoerkna (Linnaeus, 1758) | 5564 | 3.0 | 20.0 | 8.9 ± 2.3 | 1.0 | 97.0 | 7.9 ± 7.6 | |
Chondrostoma nasus (Linnaeus, 1758) | 1 | 11.8 | 11.8 | 11.8 | 11.0 | 11.0 | 11.0 | |
Rutilus sp. | 4 | 8.4 | 15.5 | 12.5 ± 3.0 | 5.0 | 43.0 | 23.3 ± 15.5 | |
Rutilus pigus (Lacepède, 1803) | 5 | 10.6 | 12.6 | 12.6 ± 0.7 | 8.7 | 17.0 | 17.0 ± 3.3 | |
Rutilus rutilus (Linnaeus, 1758) | 521 | 4.5 | 26.5 | 12.5 ± 3.3 | 1.1 | 155.0 | 23.5 ± 25.1 | |
Scardinius erythrophthalmus (Linnaeus, 1758) | 106 | 5.4 | 28.0 | 16.2 ± 4.8 | 1.1 | 350.0 | 66.6 ± 31.5 | |
PERCIDAE | Gymnocephalus sp. | 51 | 5.5 | 11.5 | 8.9 ± 1.4 | 1.1 | 22.0 | 9.2 ± 3.9 |
Gymnocephalus baloni (Holcík and Hensel, 1974) | 45 | 4.8 | 14 | 6.5 ± 1.7 | 3.0 | 3.0 | 3.3 ± 3.5 | |
Gymnocephalus cernua (Linnaeus, 1758) | 14 | 4.9 | 8.6 | 7.1 ± 1.3 | 1.3 | 7.0 | 3.9 ± 1.7 | |
Perca fluviatilis (Linnaeus, 1758) | 369 | 5.0 | 21.9 | 12.1 ± 3.9 | 1.1 | 201.0 | 30.5 ± 28.7 | |
Sander lucioperca (Linnaeus, 1758) | 177 | 8.5 | 29.5 | 18.2 ± 3.4 | 3.0 | 200.0 | 44.4 ± 30.3 | |
XENOCYPRIDIDAE | Hypophthalmichthys molitrix (Valenciennes, 1844) | 203 | 9.6 | 63.5 | 20.3 ± 7.2 | 6.0 | 3145.0 | 125.8 ± 336.4 |
SILURIDAE | Silurus glanis (Linnaeus, 1758) | 167 | 8.5 | 40.0 | 16.9 ± 5.0 | 2.0 | 425.0 | 41.4 ± 45.6 |
Family | Species | Length–Weight Relationship Parameters | GT | Condition Factors | |||||
---|---|---|---|---|---|---|---|---|---|
n | Mean a | Mean b | CI (b) | R2 Range | K | Kn | |||
Centrarchidae | Lepomis gibbosus (Linnaeus, 1758) | 2 | 0.0096 | 3.3016 | 2.9061–3.6972 | 0.7244–0.9848 | A+ | 1.4956 | 1.0226 |
Cobitidae | Cobitis elongatoides (Băcescu and Mayer, 1969) | 0 | - | - | - | - | - | 0.4739 | - |
Cyprinidae | Carassius gibelio (Bloch, 1782) | 8 | 0.0072 | 3.2739 | 3.2127–3.3350 | 0.9343–0.9966 | A+ | 1.3213 | 1.0226 |
Cyprinus carpio (Linnaeus, 1758) | 3 | 0.0057 | 3.3296 | 3.0950–3.5642 | 0.9207–0.9501 | A+ | 1.0826 | 1.0224 | |
Gobionidae | Pseudorasbora parva (Temminck and Schlegel, 1846) | 4 | 0.0027 | 3.5573 | 3.4167–3.6978 | 0.7049–0.9452 | A+ | 0.7829 | 1.0171 |
Esocidae | Esox lucius (Linnaeus, 1758) | 3 | 0.0049 | 3.1517 | 2.9669–3.3365 | 0.951–0.9876 | A+ | 0.7246 | 1.0050 |
Ictaluridae | Ameiurus nebulosus (Lesueur, 1819) | 1 | 0.0049 | 3.3658 | - | 0.941 | A+ | 1.4283 | 1.0050 |
Leuciscidae | Abramis brama (Linnaeus, 1758) | 3 | 0.0020 | 3.4954 | 3.3752–3.6155 | 0.9377–0.9998 | A+ | 0.6181 | 1.0124 |
Alburnus albidus (Costa, 1838) | 0 | - | - | - | - | - | 0.8769 | - | |
Alburnus alburnus (Linnaeus, 1758) | 6 | 0.0024 | 3.5257 | 3.2341–3.8172 | 0.818–0.9877 | A+ | 0.5959 | 1.0338 | |
Leuciscus aspius (Linnaeus, 1758) | 8 | 0.0052 | 3.1853 | 3.0369–3.3338 | 0.903–0.9987 | A+ | 0.7776 | 1.0104 | |
Blicca bjoerkna (Linnaeus, 1758) | 8 | 0.0060 | 3.2385 | 3.0895–3.3875 | 0.7316–0.9677 | A+ | 0.8765 | 1.0227 | |
Chondrostoma nasus (Linnaeus, 1758) | 0 | - | - | - | - | - | 0.6695 | - | |
Rutilus sp. | 0 | - | - | - | - | - | 1.0004 | - | |
Rutilus pigus (Lacepède, 1803) | 0 | - | - | - | - | - | 0.8501 | - | |
Rutilus rutilus (Linnaeus, 1758) | 8 | 0.0048 | 3.3008 | 3.1734–3.4282 | 0.7887–0.9942 | A+ | 0.8809 | 1.0221 | |
Scardinius erythrophthalmus (Linnaeus, 1758) | 5 | 0.0024 | 3.5747 | 3.4465–3.7028 | 0.9312–0.9976 | A+ | 1.1316 | 1.0116 | |
Percidae | Gymnocephalus sp. | 1 | 0.0083 | 3.1677 | - | 0.827 | I | 1.2034 | 1.0287 |
Gymnocephalus baloni (Holcík and Hensel, 1974) | 2 | 0.0210 | 2.6831 | 2.5107–2.8555 | 0.8783–0.9307 | I | 1.0924 | 1.0106 | |
Gymnocephalus cernua (Linnaeus, 1758) | 2 | 0.0171 | 2.7328 | 2.6480–2.8176 | 0.955–0.9873 | A− | 1.0280 | 1.0024 | |
Perca fluviatilis (Linnaeus, 1758) | 5 | 0.0042 | 3.4771 | 3.2185–3.7356 | 0.8553–0.9942 | A+ | 1.1331 | 1.0161 | |
Sander lucioperca (Linnaeus, 1758) | 4 | 0.0042 | 3.2006 | 3.0260–3.3752 | 0.8056–0.9853 | A+ | 0.6745 | 1.0107 | |
Xenocyprididae | Hypophthalmichthys molitrix (Valenciennes, 1844) | 5 | 0.0032 | 3.3847 | 3.2424–3.5269 | 0.8496–0.9995 | A+ | 0.7018 | 1.0205 |
Siluridae | Silurus glanis (Linnaeus, 1758) | 3 | 0.0146 | 2.8989 | 2.5191–3.2787 | 0.908–0.9993 | A− | 0.6600 | 1.0524 |
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Vuić, N.; Turković Čakalić, I.; Koh, M.; Ergović, V.; Vlaičević, B.; Šag, M.; Rožac, V.; Čerba, D. Floodplains as a Suitable Habitat for Freshwater Fish: The Length–Weight Relationships and Condition Factors of Fish Inhabiting a Danube Floodplain in Croatia. Sustainability 2024, 16, 7566. https://doi.org/10.3390/su16177566
Vuić N, Turković Čakalić I, Koh M, Ergović V, Vlaičević B, Šag M, Rožac V, Čerba D. Floodplains as a Suitable Habitat for Freshwater Fish: The Length–Weight Relationships and Condition Factors of Fish Inhabiting a Danube Floodplain in Croatia. Sustainability. 2024; 16(17):7566. https://doi.org/10.3390/su16177566
Chicago/Turabian StyleVuić, Nera, Ivana Turković Čakalić, Miran Koh, Viktorija Ergović, Barbara Vlaičević, Matej Šag, Vlatko Rožac, and Dubravka Čerba. 2024. "Floodplains as a Suitable Habitat for Freshwater Fish: The Length–Weight Relationships and Condition Factors of Fish Inhabiting a Danube Floodplain in Croatia" Sustainability 16, no. 17: 7566. https://doi.org/10.3390/su16177566