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Riverine flow and spawning requirements of Macquaria ambigua oriens: implications for conservation and management

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Cockayne, B. J., McDougall, A. J., Espinoza, T., Burndred, K. R., Thrupp, C. L., Broadfoot, C. D. and Finn, M. A. (2013) Riverine flow and spawning requirements of Macquaria ambigua oriens: implications for conservation and management. Marine and Freshwater Research, 64 (1). pp. 42-53. ISSN 1323-1650

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Article Link: http://dx.doi.org/10.1071/mf12047


Understanding the life-history attributes of aquatic species is integral to the development of environmental-flow strategies in regulated river systems. This is particularly important when species are under continual and increasing pressure from water-resource development. In this study, the water temperature and flow requirements for spawning of the Fitzroy River golden perch (Macquaria ambigua oriens) were investigated over 4 years at 22 sites in the Fitzroy River catchment. Eggs, larvae and young-of-year (YOY) M. ambigua oriens were sampled on a variety of flow events to determine the environmental requirements for spawning. Eggs and larvae of M. ambigua oriens were detected during natural flow events generally with a minimum of 1.5 m river rise and duration of 7 days. Spawning was associated with the peak and/or recession of the first or second post-winter flow event where water temperatures exceeded 248 degrees C. Our data suggests that it is important to protect a range of flows, not just flood flows, as previously documented for this species. The interaction of spawning flows with existing and future water-resource development should be considered to ensure maintenance of the population viability of M. ambigua oriens.

Item Type:Article
Business groups:Fisheries Queensland
Additional Information:Cockayne, B. J. McDougall, A. J. Espinoza, T. Burndred, K. R. Thrupp, C. L. Broadfoot, C. D. Finn, M. A. Csiro publishing Collingwood
Keywords:environmental flows Fitzroy River golden perch regulation water-resource development water temperature australian freshwater fishes murray-darling basin golden perch recruitment patterns environmental flows rearing experiments floodplain river dryland river arid zone water
Subjects:Agriculture > Agriculture (General) > Conservation of natural resources
Aquaculture and Fisheries > Fisheries > Fishery conservation
Live Archive:03 Jul 2014 03:06
Last Modified:03 Sep 2021 16:49

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