Golden perch Macquaria ambigua are flexible spawners in the Darling River, Australia

Ebner, B. C., Scholz, O., and Gawne, B. (2009) Golden perch Macquaria ambigua are flexible spawners in the Darling River, Australia. New Zealand Journal of Marine and Freshwater Research, 43 (2). pp. 571-578.

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Abstract

The role of flow and floodplains for the recruitment of fishes in the Murray-Darling Basin, Australia, remains a contentious issue. In this context, the reproductive ecology of golden perch Macquaria ambigua, a widespread, high-profile angling species with a propensity to produce large numbers of semi-pelagic eggs remains to be resolved. Back-calculation of spawning dates from otoliths of juvenile golden perch (Macquaria ambigua) collected in August and November 1997 from the Menindee Lakes on the floodplain of the Darling River, in western New South Wales, Australia, advances understanding of spawning of this species in three ways: (1) golden perch spawned at lower temperatures (<= 18.8 degrees C) than has previously been reported from the Murray-Darling Basin; (2) golden perch in the Menindee Lakes can be derived from spawning in all seasons of the year in contrast to what is apparent in more southerly locations of the Murray-Darling Basin; and (3) spawning can occur in the absence of floods.

Item ID: 35630
Item Type: Article (Research - C1)
ISSN: 1175-8805
Keywords: Macquaria ambigua, recruitment, flow, temperature, floodplain, otolith
Funders: Murray-Darling Basin Commission Strategic Investigations & Education Program
Projects and Grants: Murray-Darling Basin Commission Strategic Investigations & Education Program Project R1011: The ecology of deflation basin lakes
Date Deposited: 01 Oct 2014 15:55
FoR Codes: 06 BIOLOGICAL SCIENCES > 0602 Ecology > 060204 Freshwater Ecology @ 100%
SEO Codes: 97 EXPANDING KNOWLEDGE > 970106 Expanding Knowledge in the Biological Sciences @ 100%
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