Tolerable ranges of fluid shear for early life-stage fishes

Implications for safe fish passage at hydropower and irrigation infrastructure

Research output: Contribution to journalArticle

Abstract

Egg and larval fish drifting downstream are likely to encounter river infrastructure leading to mortality. Elevated fluid shear is one likely cause. To confirm this and determine tolerable strain rates resulting from fluid shear, egg and larvae of three Australian species were exposed to a high-velocity, submerged jet in a laboratory flume. Mortality was modelled over a broad range of strain rates, allowing critical thresholds to be estimated. Eggs were very susceptible to mortality at low strain rates and 100% of golden and silver perch died once strain rate exceeded 629 and 148 s-1 respectively. Larvae were less vulnerable than eggs, but mortality increased at higher strain rates and at younger ages. Most ages of larvae will be protected if strain rate does not exceed 600 s-1, although a lower guideline of less than 400 s-1 may be needed in areas where very early stage Murray cod larvae drift. Golden perch and silver perch were not susceptible to shear once maturity reached ∼25 days post-hatch (nearing juvenile metamorphosis). The thresholds described here will prove useful when refining design and operational guidelines for hydropower and irrigation infrastructure to improve fish survival.

Original languageEnglish
JournalMarine and Freshwater Research
DOIs
Publication statusE-pub ahead of print - 21 Jun 2019

Fingerprint

water power
Perches
strain rate
infrastructure
fish roe
Larva
shears
Fishes
irrigation
fluid
Mortality
fish
Silver
Eggs
egg
larva
Ovum
mortality
larvae
Guidelines

Cite this

@article{1303484a90794ef28f95ead0df4ae7c2,
title = "Tolerable ranges of fluid shear for early life-stage fishes: Implications for safe fish passage at hydropower and irrigation infrastructure",
abstract = "Egg and larval fish drifting downstream are likely to encounter river infrastructure leading to mortality. Elevated fluid shear is one likely cause. To confirm this and determine tolerable strain rates resulting from fluid shear, egg and larvae of three Australian species were exposed to a high-velocity, submerged jet in a laboratory flume. Mortality was modelled over a broad range of strain rates, allowing critical thresholds to be estimated. Eggs were very susceptible to mortality at low strain rates and 100{\%} of golden and silver perch died once strain rate exceeded 629 and 148 s-1 respectively. Larvae were less vulnerable than eggs, but mortality increased at higher strain rates and at younger ages. Most ages of larvae will be protected if strain rate does not exceed 600 s-1, although a lower guideline of less than 400 s-1 may be needed in areas where very early stage Murray cod larvae drift. Golden perch and silver perch were not susceptible to shear once maturity reached ∼25 days post-hatch (nearing juvenile metamorphosis). The thresholds described here will prove useful when refining design and operational guidelines for hydropower and irrigation infrastructure to improve fish survival.",
author = "Anna Navarro and Boys, {Craig A.} and Wayne Robinson and Baumgartner, {Lee J.} and Brett Miller and Deng, {Zhiqun D.} and Finlayson, {C. Max}",
year = "2019",
month = "6",
day = "21",
doi = "10.1071/MF18131",
language = "English",
journal = "Australian Journal of Marine and Freshwater Research",
issn = "0067-1940",
publisher = "CSIRO Publishing",

}

TY - JOUR

T1 - Tolerable ranges of fluid shear for early life-stage fishes

T2 - Implications for safe fish passage at hydropower and irrigation infrastructure

AU - Navarro, Anna

AU - Boys, Craig A.

AU - Robinson, Wayne

AU - Baumgartner, Lee J.

AU - Miller, Brett

AU - Deng, Zhiqun D.

AU - Finlayson, C. Max

PY - 2019/6/21

Y1 - 2019/6/21

N2 - Egg and larval fish drifting downstream are likely to encounter river infrastructure leading to mortality. Elevated fluid shear is one likely cause. To confirm this and determine tolerable strain rates resulting from fluid shear, egg and larvae of three Australian species were exposed to a high-velocity, submerged jet in a laboratory flume. Mortality was modelled over a broad range of strain rates, allowing critical thresholds to be estimated. Eggs were very susceptible to mortality at low strain rates and 100% of golden and silver perch died once strain rate exceeded 629 and 148 s-1 respectively. Larvae were less vulnerable than eggs, but mortality increased at higher strain rates and at younger ages. Most ages of larvae will be protected if strain rate does not exceed 600 s-1, although a lower guideline of less than 400 s-1 may be needed in areas where very early stage Murray cod larvae drift. Golden perch and silver perch were not susceptible to shear once maturity reached ∼25 days post-hatch (nearing juvenile metamorphosis). The thresholds described here will prove useful when refining design and operational guidelines for hydropower and irrigation infrastructure to improve fish survival.

AB - Egg and larval fish drifting downstream are likely to encounter river infrastructure leading to mortality. Elevated fluid shear is one likely cause. To confirm this and determine tolerable strain rates resulting from fluid shear, egg and larvae of three Australian species were exposed to a high-velocity, submerged jet in a laboratory flume. Mortality was modelled over a broad range of strain rates, allowing critical thresholds to be estimated. Eggs were very susceptible to mortality at low strain rates and 100% of golden and silver perch died once strain rate exceeded 629 and 148 s-1 respectively. Larvae were less vulnerable than eggs, but mortality increased at higher strain rates and at younger ages. Most ages of larvae will be protected if strain rate does not exceed 600 s-1, although a lower guideline of less than 400 s-1 may be needed in areas where very early stage Murray cod larvae drift. Golden perch and silver perch were not susceptible to shear once maturity reached ∼25 days post-hatch (nearing juvenile metamorphosis). The thresholds described here will prove useful when refining design and operational guidelines for hydropower and irrigation infrastructure to improve fish survival.

UR - http://www.scopus.com/inward/record.url?scp=85067862246&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85067862246&partnerID=8YFLogxK

U2 - 10.1071/MF18131

DO - 10.1071/MF18131

M3 - Article

JO - Australian Journal of Marine and Freshwater Research

JF - Australian Journal of Marine and Freshwater Research

SN - 0067-1940

ER -