Journal article

Population demographics of golden perch (Macquaria ambigua) in the Darling River prior to a major fish kill: a guide for rehabilitation

Brenton P Zampatti, Benjamin G Fanson, Lee J Baumgartner, Gavin L Butler, Steven G Brooks, David A Crook, Katherine Doyle, Alison J King, Wayne M Koster, Roland Maas, Aleksey Sadekov, Peter Scott, Arron Strawbridge, Jason D Thiem, Zeb Tonkin, Phillipa J Wilson, Jon Woodhead, Ryan Woods

MARINE AND FRESHWATER RESEARCH | CSIRO PUBLISHING | Published : 2021

Abstract

An understanding of population demographics and life history processes is integral to the rehabilitation of fish populations. In Australia's highly modified Murray-Darling Basin, native fish are imperilled and fish deaths in the Darling River in 2018-19 highlighted their vulnerability. Golden perch (Macquaria ambigua) is a long-lived percichthyid that was conspicuous in the fish kills. To guide population rehabilitation in the Darling River, pre-fish kill age structure, provenance and movement of golden perch were explored using otolith microstructure and chemistry (87Sr/86Sr). Across the Lower and Mid-Darling River, recruitment was episodic, with dominant cohorts associated with years chara..

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Grants

Awarded by Australian Research Council through the ARC Centre of Excellence for Coral Reef Studies


Funding Acknowledgements

The Australian Research Council funded A. Sadekov through the ARC Centre of Excellence for Coral Reef Studies (CE140100020 to Malcolm McCulloch). Aspects of this project were funded by the Murray-Darling Basin Authority and the Commonwealth Environmental Water Office and the New South Wales Recreational Fishing Trust Fund.