Entrainment and impingement of juvenile silver perch, Bidyanus bidyanus, and golden perch, Macquaria ambigua, at a fish screen

effect of velocity and light

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7 Citations (Scopus)

Abstract

Entrainment and impingement of two non-salmonid species susceptible to entrainment at irrigation diversions, silver perch, Bidyanus bidyanus (Mitchell), and golden perch, Macquaria ambigua (Richardson), were examined at an experimental intake screen in a laboratory flume under a range of velocities and light levels. The presence of an intake screen significantly reduced entrainment, in some cases reducing mortality from over 90% (unscreened) to less than 2% (when screened). Although some differences in behaviour existed between species, approach velocities (measured 8 cm in front of the screen) up to 0.4 m s-1 effectively reduced entrainment, with very little injury or mortality resulting from incidental screen contacts or impingement. Both species used visual cues to negotiate the screen face, thereby increasing their ability to avoid contact at higher velocities. In the absence of these visual cues, positive rheotactic behaviour was enhanced and fish mostly avoided approaching the screen. These results demonstrate that fish screens operated at approach velocities of up to 0.4 m s-1 have great potential for the protection of silver perch and golden perch juveniles at irrigation intakes.
Original languageEnglish
Pages (from-to)362-373
Number of pages12
JournalFisheries Management and Ecology
Volume20
Issue number4
DOIs
Publication statusPublished - Aug 2013

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Bidyanus bidyanus
perch
silver
entrainment
visual cue
fish
irrigation
mortality
Macquaria ambigua
effect

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title = "Entrainment and impingement of juvenile silver perch, Bidyanus bidyanus, and golden perch, Macquaria ambigua, at a fish screen: effect of velocity and light",
abstract = "Entrainment and impingement of two non-salmonid species susceptible to entrainment at irrigation diversions, silver perch, Bidyanus bidyanus (Mitchell), and golden perch, Macquaria ambigua (Richardson), were examined at an experimental intake screen in a laboratory flume under a range of velocities and light levels. The presence of an intake screen significantly reduced entrainment, in some cases reducing mortality from over 90{\%} (unscreened) to less than 2{\%} (when screened). Although some differences in behaviour existed between species, approach velocities (measured 8 cm in front of the screen) up to 0.4 m s-1 effectively reduced entrainment, with very little injury or mortality resulting from incidental screen contacts or impingement. Both species used visual cues to negotiate the screen face, thereby increasing their ability to avoid contact at higher velocities. In the absence of these visual cues, positive rheotactic behaviour was enhanced and fish mostly avoided approaching the screen. These results demonstrate that fish screens operated at approach velocities of up to 0.4 m s-1 have great potential for the protection of silver perch and golden perch juveniles at irrigation intakes.",
keywords = "Approach velocity, Intake screen, Irrigation diversion, Murray-Darling Basin",
author = "C.A. Boys and Lee Baumgartner and M. Lowry",
note = "Imported on 12 Apr 2017 - DigiTool details were: month (773h) = August; Journal title (773t) = Fisheries Management and Ecology. ISSNs: 0969-997X;",
year = "2013",
month = "8",
doi = "10.1111/fme.12026",
language = "English",
volume = "20",
pages = "362--373",
journal = "Fisheries Management and Ecology",
issn = "0969-997X",
publisher = "Wiley-Blackwell",
number = "4",

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T1 - Entrainment and impingement of juvenile silver perch, Bidyanus bidyanus, and golden perch, Macquaria ambigua, at a fish screen

T2 - effect of velocity and light

AU - Boys, C.A.

AU - Baumgartner, Lee

AU - Lowry, M.

N1 - Imported on 12 Apr 2017 - DigiTool details were: month (773h) = August; Journal title (773t) = Fisheries Management and Ecology. ISSNs: 0969-997X;

PY - 2013/8

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N2 - Entrainment and impingement of two non-salmonid species susceptible to entrainment at irrigation diversions, silver perch, Bidyanus bidyanus (Mitchell), and golden perch, Macquaria ambigua (Richardson), were examined at an experimental intake screen in a laboratory flume under a range of velocities and light levels. The presence of an intake screen significantly reduced entrainment, in some cases reducing mortality from over 90% (unscreened) to less than 2% (when screened). Although some differences in behaviour existed between species, approach velocities (measured 8 cm in front of the screen) up to 0.4 m s-1 effectively reduced entrainment, with very little injury or mortality resulting from incidental screen contacts or impingement. Both species used visual cues to negotiate the screen face, thereby increasing their ability to avoid contact at higher velocities. In the absence of these visual cues, positive rheotactic behaviour was enhanced and fish mostly avoided approaching the screen. These results demonstrate that fish screens operated at approach velocities of up to 0.4 m s-1 have great potential for the protection of silver perch and golden perch juveniles at irrigation intakes.

AB - Entrainment and impingement of two non-salmonid species susceptible to entrainment at irrigation diversions, silver perch, Bidyanus bidyanus (Mitchell), and golden perch, Macquaria ambigua (Richardson), were examined at an experimental intake screen in a laboratory flume under a range of velocities and light levels. The presence of an intake screen significantly reduced entrainment, in some cases reducing mortality from over 90% (unscreened) to less than 2% (when screened). Although some differences in behaviour existed between species, approach velocities (measured 8 cm in front of the screen) up to 0.4 m s-1 effectively reduced entrainment, with very little injury or mortality resulting from incidental screen contacts or impingement. Both species used visual cues to negotiate the screen face, thereby increasing their ability to avoid contact at higher velocities. In the absence of these visual cues, positive rheotactic behaviour was enhanced and fish mostly avoided approaching the screen. These results demonstrate that fish screens operated at approach velocities of up to 0.4 m s-1 have great potential for the protection of silver perch and golden perch juveniles at irrigation intakes.

KW - Approach velocity

KW - Intake screen

KW - Irrigation diversion

KW - Murray-Darling Basin

U2 - 10.1111/fme.12026

DO - 10.1111/fme.12026

M3 - Article

VL - 20

SP - 362

EP - 373

JO - Fisheries Management and Ecology

JF - Fisheries Management and Ecology

SN - 0969-997X

IS - 4

ER -