Spawning season movements of Macquarie perch (Macquaria australasica) in the Yarra River, Victoria

Koster, W.M., Dawson, D.R., Morrongiello, J.R. and Crook, D.A. 2013, Spawning season movements of Macquarie perch (Macquaria australasica) in the Yarra River, Victoria, Australian journal of zoology, vol. 61, no. 5, pp. 386-394, doi: 10.1071/ZO13054.

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Title Spawning season movements of Macquarie perch (Macquaria australasica) in the Yarra River, Victoria
Author(s) Koster, W.M.
Dawson, D.R.
Morrongiello, J.R.
Crook, D.A.
Journal name Australian journal of zoology
Volume number 61
Issue number 5
Start page 386
End page 394
Total pages 9
Publisher CSIRO
Place of publication Melbourne, Vic.
Publication date 2013
ISSN 0004-959X
Keyword(s) environmental flows
spawning migration.
Summary The Macquarie perch (Macquaria australasica) is a threatened fish species that inhabits rivers and impoundments in south-eastern Australia. Previous studies have shown that Macquarie perch in impoundments exhibit synchronised upstream spawning migrations to shallow, fast-flowing habitats in the lower reaches of inflowing streams. There has been little study of movement behaviours of entirely riverine populations of Macquarie perch despite this being the species’ natural habitat. Here, radio-telemetry is used to test the hypothesis that riverine populations exhibit synchronised migrations during the spawning season. Thirty Macquarie perch in the Yarra River, Victoria, a translocated population outside of the species’ natural range, were radio-tagged before the late spring–early summer spawning season and their movements followed over a 10-month period (May 2011 to February 2012). Tagged fish typically occupied restricted reaches of stream (<450 m). Sixteen of the fish undertook occasional upstream or downstream movements (~250–1000 m) away from their usual locations, particularly associated with large flow variations during the spawning season. There was no evidence of synchronised migratory behaviour or movement of multiple fish to specific locations or habitats during the spawning season. Whilst further research over more years is needed to comprehensively document the spawning-related behaviours of riverine Macquarie perch, our study demonstrates that management of riverine populations of this threatened species cannot necessarily be based on the model of spawning behaviour developed for lacustrine populations.
Language eng
DOI 10.1071/ZO13054
Field of Research 059999 Environmental Sciences not elsewhere classified
Socio Economic Objective 970105 Expanding Knowledge in the Environmental Sciences
HERDC Research category C1 Refereed article in a scholarly journal
Copyright notice ©2013, CSIRO Publishing
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Document type: Journal Article
Collection: School of Life and Environmental Sciences
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