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Development and evaluation of a flat-bed passive integrated transponder detection system for recording movement of lowland river fishes through a baffled pass.

Lucas, M.C. and Mercer, T. and McGinty, S. and Armstrong, J.D. (1999) 'Development and evaluation of a flat-bed passive integrated transponder detection system for recording movement of lowland river fishes through a baffled pass.', in Advances in fish telemetry. Lowestoft, UK: Centre for Environment, Fisheries and Aquaculture Science (CEFAS), pp. 117-127.

Abstract

The migratory behaviour of non-salmonid fishes in lowland rivers is still poorly understood, as is their success in using fish passes to allow upstream movement. The use of an automated flat-bed passive integrated transponder (PIT) detector array to study behaviour of fish at a baffled flume pass on the Yorkshire Dement, North East England, is described. The array comprised four flat PIT detector plates, each connected to a control unit. Two detectors were positioned at the downstream end of the fish pass, and two at the upstream end. Control units sent interrogation signals, received transponded signals from tags, and stored the data. Efficiency of the upstream detectors was validated as near 100% using tagged brown trout (Salmo trutta) introduced below the detectors and observed to swim past them. Between 22 May 1998 and 9 April 1999 a total of 40 1 fish, comprising 1 1 species with a combined length range of 9-104 cm, were PIT tagged and released downstream of the fish pass. Near-continuous recording between 23 May 1998 and 3 1 May 1999 demonstrated the effectiveness of the PIT array at this site for recording entry to, and successfi~el xit, of fishes from the pass. A total of 1271 records from 90 individual fish were recorded at the downstream detectors, and 20 tagged fish were recorded successfully exiting from the top of the pass, giving a pass eficiency of 22.2 'YO, based on the proportion of different fish which ascended. Overall 22.4 %of tagged fish entered the pass, comprising chub (Leuciscus cephalus), dace (Leuciscus leuciscus), roach (Rutilus rutilus), bleak (Alburnus alburnus), perch (Percafluviatilis), pike (Esox lucius) and brown trout, with highest numbers in May and June.

Item Type:Book chapter
Keywords:Passive integrated transponder, Fish pass, Lowland river, Cyprinidae.
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Status:Peer-reviewed
Publisher Web site:http://www.cefas.defra.gov.uk/publications-and-data.aspx
Record Created:12 Feb 2013 10:05
Last Modified:12 Feb 2013 16:19

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