TY  - 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 .

TY  - JOUR
AU  - Lenhardt, Mirjana
AU  - Smederevac-Lalić, Marija
AU  - Spasić, Slađana
AU  - Hont, Stefan
AU  - Paraschiv, Marian
AU  - Iani, Marian I.
AU  - Nikčević, Miroslav
AU  - Klimley, Peter A.
AU  - Suciu, Radu
PY  - 2021
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/1455
AB  - The giant European catfish, Silurus glanis (total length = 200 cm; total weight approximate to 80 kg) was caught downstream of Iron Gate II hydropower dam (Danube River, 863 rkm) and tagged with an ultrasonic transmitter (V16TP; Vemco Ltd.) equipped with depth and temperature sensors. Changes in catfish diving behavior and temperature exposure were monitored over a period of roughly 2 years. Transmitter detections were recorded by nine autonomous receivers (VR2W, installed in 2015 between Serbia and Romania, as well as near Romanian shiplock and upstream Romanian turbines). The first signals were recorded on April 28, 2015 and the last on February 13, 2017. Altogether 59,355 and 59,175 detections of the catfish depth and water temperature were recorded, respectively. The greatest number of signals were recorded by the two receivers closest to the location where the catfish was caught, 72.3% and 27.1%, while only 0.6% of signals were recorded by other receivers. The mean catfish depth was 8.4 m, while minimum and maximum depths were 1.2 and 16.2 m. Results obtained showed that this catfish exhibited high site fidelity, while changes in depth at certain periods are possibly related to its search for prey and upstream migration during the spawning period. Hydropower dam and shiplock were obstacles on its migration upstream and telemetry studies could ensure habitat requirements and meet the development of restoration and conservation strategies for the fish resources in the future.
PB  - Wiley, Hoboken
T2  - International Review of Hydrobiology
T1  - Seasonal changes in depth position and temperature of European catfish (Silurus glanis) tracked by acoustic telemetry in the Danube River
EP  - 201
IS  - 3-4
SP  - 191
VL  - 106
DO  - 10.1002/iroh.202002049
ER  - 

@article{
author = "Lenhardt, Mirjana and Smederevac-Lalić, Marija and Spasić, Slađana and Hont, Stefan and Paraschiv, Marian and Iani, Marian I. and Nikčević, Miroslav and Klimley, Peter A. and Suciu, Radu",
year = "2021",
abstract = "The giant European catfish, Silurus glanis (total length = 200 cm; total weight approximate to 80 kg) was caught downstream of Iron Gate II hydropower dam (Danube River, 863 rkm) and tagged with an ultrasonic transmitter (V16TP; Vemco Ltd.) equipped with depth and temperature sensors. Changes in catfish diving behavior and temperature exposure were monitored over a period of roughly 2 years. Transmitter detections were recorded by nine autonomous receivers (VR2W, installed in 2015 between Serbia and Romania, as well as near Romanian shiplock and upstream Romanian turbines). The first signals were recorded on April 28, 2015 and the last on February 13, 2017. Altogether 59,355 and 59,175 detections of the catfish depth and water temperature were recorded, respectively. The greatest number of signals were recorded by the two receivers closest to the location where the catfish was caught, 72.3% and 27.1%, while only 0.6% of signals were recorded by other receivers. The mean catfish depth was 8.4 m, while minimum and maximum depths were 1.2 and 16.2 m. Results obtained showed that this catfish exhibited high site fidelity, while changes in depth at certain periods are possibly related to its search for prey and upstream migration during the spawning period. Hydropower dam and shiplock were obstacles on its migration upstream and telemetry studies could ensure habitat requirements and meet the development of restoration and conservation strategies for the fish resources in the future.",
publisher = "Wiley, Hoboken",
journal = "International Review of Hydrobiology",
title = "Seasonal changes in depth position and temperature of European catfish (Silurus glanis) tracked by acoustic telemetry in the Danube River",
pages = "201-191",
number = "3-4",
volume = "106",
doi = "10.1002/iroh.202002049"
}

Lenhardt, M., Smederevac-Lalić, M., Spasić, S., Hont, S., Paraschiv, M., Iani, M. I., Nikčević, M., Klimley, P. A.,& Suciu, R.. (2021). Seasonal changes in depth position and temperature of European catfish (Silurus glanis) tracked by acoustic telemetry in the Danube River. in International Review of Hydrobiology
Wiley, Hoboken., 106(3-4), 191-201.
https://doi.org/10.1002/iroh.202002049

Lenhardt M, Smederevac-Lalić M, Spasić S, Hont S, Paraschiv M, Iani MI, Nikčević M, Klimley PA, Suciu R. Seasonal changes in depth position and temperature of European catfish (Silurus glanis) tracked by acoustic telemetry in the Danube River. in International Review of Hydrobiology. 2021;106(3-4):191-201.
doi:10.1002/iroh.202002049 .

Lenhardt, Mirjana, Smederevac-Lalić, Marija, Spasić, Slađana, Hont, Stefan, Paraschiv, Marian, Iani, Marian I., Nikčević, Miroslav, Klimley, Peter A., Suciu, Radu, "Seasonal changes in depth position and temperature of European catfish (Silurus glanis) tracked by acoustic telemetry in the Danube River" in International Review of Hydrobiology, 106, no. 3-4 (2021):191-201,
https://doi.org/10.1002/iroh.202002049 . .