Spatial movement of the Wels catfish (Silurus glanis) in the Danube
Authors
Smederevac-Lalić, Marija
Lenhardt, Mirjana

Spasić, Slađana

Hont, Stefan

Paraschiv, Marian
Iani, Marian I.

NICHERSU, IULIAN
Trifanov, Cristian
Nikčević, Miroslav

Klimley, Peter A.
Suciu, Radu
Conference object (Published version)

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Wels catfish (Silurus glanis, Linnaeus, 1758) is one of the most targeted species for recreational and commercial fishing in the Danube River, even though studies of behavior and movement patterns of Wels catfish in the Danube are rare. Wels catfish was caught downstream of Iron Gate II hydropower dam and tagged with an ultrasonic transmitter (Vemco Ltd, V16TP). Nine autonomous receivers (Vemco Ltd, VR 2W) recorded detections of spatial movement downstream of Iron Gate II dam between Serbia and Romania for almost two years, between the years 2015 and 2017. Our telemetry data found that Wels catfish exhibit relatively short movements within a maximum range (≈ 12 km), but as a territorial species most of the time it was recorded by the two receivers, close to the Iron Gate dam and location where it was caught. The longest displacement from the preferable place under Iron Gate II dam was migration to Romanian ship lock and turbines located in the right arm of the Danube River. Location un...der the river dam is already recognized as a place of aggregation of the fish and thus preference of predatory catfish is strongly connected with food availability. Our data revealed that dam and ship lock blocked further migration of this fish. The last signal received was during the winter 2017, which was a period with extremely low temperature and ice cover on the Danube River. Considering the fact that the ice displaced whole receiver deployment downstream the dam, we might conclude that the tagged catfish disappeared because of ice movement during the winter season. Results can be used for management ensuring habitat requirements and developing of restoration and conservation strategies.
Keywords:
Danube River, catfish, telemetry, spatial movement, temporal movementSource:
4th International Conference on the Status and Future of the World’s Large Rivers, 2021, 268-Publisher:
- BOKU University of Natural Resources and Life Sciences, Vienna
Funding / projects:
- Ministry of Education, Science and Technological Development, Republic of Serbia, Grant no. 200053 (University of Belgrade, Institute for Multidisciplinary Research) (RS-200053)
- Ministry of Education, Science and Technological Development, Republic of Serbia, Grant no. 200007 (University of Belgrade, Institute for Biological Research 'Siniša Stanković') (RS-200007)
- COST Action The European Aquatic Animal Tracking Network (ETN) CA18102
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Institution/Community
Institut za multidisciplinarna istraživanjaTY - CONF AU - Smederevac-Lalić, Marija AU - Lenhardt, Mirjana AU - Spasić, Slađana AU - Hont, Stefan AU - Paraschiv, Marian AU - Iani, Marian I. AU - NICHERSU, IULIAN AU - Trifanov, Cristian AU - Nikčević, Miroslav AU - Klimley, Peter A. AU - Suciu, Radu PY - 2021 UR - http://rimsi.imsi.bg.ac.rs/handle/123456789/1658 AB - Wels catfish (Silurus glanis, Linnaeus, 1758) is one of the most targeted species for recreational and commercial fishing in the Danube River, even though studies of behavior and movement patterns of Wels catfish in the Danube are rare. Wels catfish was caught downstream of Iron Gate II hydropower dam and tagged with an ultrasonic transmitter (Vemco Ltd, V16TP). Nine autonomous receivers (Vemco Ltd, VR 2W) recorded detections of spatial movement downstream of Iron Gate II dam between Serbia and Romania for almost two years, between the years 2015 and 2017. Our telemetry data found that Wels catfish exhibit relatively short movements within a maximum range (≈ 12 km), but as a territorial species most of the time it was recorded by the two receivers, close to the Iron Gate dam and location where it was caught. The longest displacement from the preferable place under Iron Gate II dam was migration to Romanian ship lock and turbines located in the right arm of the Danube River. Location under the river dam is already recognized as a place of aggregation of the fish and thus preference of predatory catfish is strongly connected with food availability. Our data revealed that dam and ship lock blocked further migration of this fish. The last signal received was during the winter 2017, which was a period with extremely low temperature and ice cover on the Danube River. Considering the fact that the ice displaced whole receiver deployment downstream the dam, we might conclude that the tagged catfish disappeared because of ice movement during the winter season. Results can be used for management ensuring habitat requirements and developing of restoration and conservation strategies. PB - BOKU University of Natural Resources and Life Sciences, Vienna C3 - 4th International Conference on the Status and Future of the World’s Large Rivers T1 - Spatial movement of the Wels catfish (Silurus glanis) in the Danube SP - 268 UR - https://hdl.handle.net/21.15107/rcub_rimsi_1658 ER -
@conference{ author = "Smederevac-Lalić, Marija and Lenhardt, Mirjana and Spasić, Slađana and Hont, Stefan and Paraschiv, Marian and Iani, Marian I. and NICHERSU, IULIAN and Trifanov, Cristian and Nikčević, Miroslav and Klimley, Peter A. and Suciu, Radu", year = "2021", abstract = "Wels catfish (Silurus glanis, Linnaeus, 1758) is one of the most targeted species for recreational and commercial fishing in the Danube River, even though studies of behavior and movement patterns of Wels catfish in the Danube are rare. Wels catfish was caught downstream of Iron Gate II hydropower dam and tagged with an ultrasonic transmitter (Vemco Ltd, V16TP). Nine autonomous receivers (Vemco Ltd, VR 2W) recorded detections of spatial movement downstream of Iron Gate II dam between Serbia and Romania for almost two years, between the years 2015 and 2017. Our telemetry data found that Wels catfish exhibit relatively short movements within a maximum range (≈ 12 km), but as a territorial species most of the time it was recorded by the two receivers, close to the Iron Gate dam and location where it was caught. The longest displacement from the preferable place under Iron Gate II dam was migration to Romanian ship lock and turbines located in the right arm of the Danube River. Location under the river dam is already recognized as a place of aggregation of the fish and thus preference of predatory catfish is strongly connected with food availability. Our data revealed that dam and ship lock blocked further migration of this fish. The last signal received was during the winter 2017, which was a period with extremely low temperature and ice cover on the Danube River. Considering the fact that the ice displaced whole receiver deployment downstream the dam, we might conclude that the tagged catfish disappeared because of ice movement during the winter season. Results can be used for management ensuring habitat requirements and developing of restoration and conservation strategies.", publisher = "BOKU University of Natural Resources and Life Sciences, Vienna", journal = "4th International Conference on the Status and Future of the World’s Large Rivers", title = "Spatial movement of the Wels catfish (Silurus glanis) in the Danube", pages = "268", url = "https://hdl.handle.net/21.15107/rcub_rimsi_1658" }
Smederevac-Lalić, M., Lenhardt, M., Spasić, S., Hont, S., Paraschiv, M., Iani, M. I., NICHERSU, I., Trifanov, C., Nikčević, M., Klimley, P. A.,& Suciu, R.. (2021). Spatial movement of the Wels catfish (Silurus glanis) in the Danube. in 4th International Conference on the Status and Future of the World’s Large Rivers BOKU University of Natural Resources and Life Sciences, Vienna., 268. https://hdl.handle.net/21.15107/rcub_rimsi_1658
Smederevac-Lalić M, Lenhardt M, Spasić S, Hont S, Paraschiv M, Iani MI, NICHERSU I, Trifanov C, Nikčević M, Klimley PA, Suciu R. Spatial movement of the Wels catfish (Silurus glanis) in the Danube. in 4th International Conference on the Status and Future of the World’s Large Rivers. 2021;:268. https://hdl.handle.net/21.15107/rcub_rimsi_1658 .
Smederevac-Lalić, Marija, Lenhardt, Mirjana, Spasić, Slađana, Hont, Stefan, Paraschiv, Marian, Iani, Marian I., NICHERSU, IULIAN, Trifanov, Cristian, Nikčević, Miroslav, Klimley, Peter A., Suciu, Radu, "Spatial movement of the Wels catfish (Silurus glanis) in the Danube" in 4th International Conference on the Status and Future of the World’s Large Rivers (2021):268, https://hdl.handle.net/21.15107/rcub_rimsi_1658 .