Location

Groningen, The Netherlands

Event Website

http://fishpassage.umass.edu/

Start Date

24-6-2015 11:20 AM

End Date

24-6-2015 11:35 AM

Description

Abstract:

The efficiency of the 2 different fish passages in River Ceyhan, Turkey were investigated by trap catches, external tags, PIT telemetry and radio telemetry. Fish were caught by electrofishing downstream of the fish passage. They were marked with tags and released downstream of the fish passages. Automatic PIT-tag logging station and a trap were positioned at the upstream exit of the fish passage. Radio tagged fish were also tracked by a receiver and antenna, manually.

The pool type fish passages was ineffective because none of the fish were found in the trap and none of the 25 radio tagged fish were passed. As for the vertical slot fish passage, a total of 495 Capoeta angorae and 280 Alburnus kotschyi were caught into the trap. Migration movements took place between May 01 and July 21. Thirteen individuals (10.7%) of the 122 external tagged C. angore and 24 individuals (15.4%) from the 156 PIT tagged C. angore passed. Similarly, 18 individuals (75%) among the 24 radio tagged fish passed. These different passing rates was because of tagged fish sizes (p<0.05). The mean length of the C. angorae passing through was 19.4 cm (11.0-39.7 cm) and the mean length of the A. kotschyi was 15.6 cm (10.1-19.8 cm). Tagged fish sizes varied from 13 to 26.5 cm (19.8±2.75) for the external tagged fish, from 11.1 to 28.3 cm (16.6±3.6 cm) for the PIT tagged fish and from 24.5 to 46.4 cm (31.3±5.85 cm) for the radio tagged fish. However, the size of the fish passing through were 20.5±1.72 cm (18.6-24.0 cm) for external tagged fish, 22.0±3.6 cm (13.7- 28.3 cm) for the PIT tagged fish and 31.5±6.17 cm (25.5-46.4 cm) for the radio tagged fish. There is a strong relationship between the sex of the migratory C. angorae and their migration time (day) (R2=0.998).

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Jun 24th, 11:20 AM Jun 24th, 11:35 AM

Session B7: Efficiency and Suitability of the Fish Passage in River Ceyhan, Turkey

Groningen, The Netherlands

Abstract:

The efficiency of the 2 different fish passages in River Ceyhan, Turkey were investigated by trap catches, external tags, PIT telemetry and radio telemetry. Fish were caught by electrofishing downstream of the fish passage. They were marked with tags and released downstream of the fish passages. Automatic PIT-tag logging station and a trap were positioned at the upstream exit of the fish passage. Radio tagged fish were also tracked by a receiver and antenna, manually.

The pool type fish passages was ineffective because none of the fish were found in the trap and none of the 25 radio tagged fish were passed. As for the vertical slot fish passage, a total of 495 Capoeta angorae and 280 Alburnus kotschyi were caught into the trap. Migration movements took place between May 01 and July 21. Thirteen individuals (10.7%) of the 122 external tagged C. angore and 24 individuals (15.4%) from the 156 PIT tagged C. angore passed. Similarly, 18 individuals (75%) among the 24 radio tagged fish passed. These different passing rates was because of tagged fish sizes (p<0.05). The mean length of the C. angorae passing through was 19.4 cm (11.0-39.7 cm) and the mean length of the A. kotschyi was 15.6 cm (10.1-19.8 cm). Tagged fish sizes varied from 13 to 26.5 cm (19.8±2.75) for the external tagged fish, from 11.1 to 28.3 cm (16.6±3.6 cm) for the PIT tagged fish and from 24.5 to 46.4 cm (31.3±5.85 cm) for the radio tagged fish. However, the size of the fish passing through were 20.5±1.72 cm (18.6-24.0 cm) for external tagged fish, 22.0±3.6 cm (13.7- 28.3 cm) for the PIT tagged fish and 31.5±6.17 cm (25.5-46.4 cm) for the radio tagged fish. There is a strong relationship between the sex of the migratory C. angorae and their migration time (day) (R2=0.998).

https://scholarworks.umass.edu/fishpassage_conference/2015/June24/8