University Of Tasmania

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Population genetic structure of estuary perch (Percalates colonorum Gunther) in south-eastern Australia

journal contribution
posted on 2023-05-20, 16:26 authored by Stoessel, DJ, van Rooyen, AR, Beheregaray, LB, Raymond, SMC, van Wyk, B, James HaddyJames Haddy, Lieschke, J, Weeks, AR

Estuary perch (Percalates colonorum Gunther) is an estuary dependent fish native to south-eastern Australia that is in decline. There is an increasing emphasis on stocking the species. Understanding the genetic structure across its range is important for guiding optimal stocking strategies. A prior study found some evidence of population genetic structure; however, few genetic markers were used in that assessment. Here, we develop 21 novel polymorphic microsatellite markers to reassess population genetics. Analyses indicate three broad genetic clusters, with populations on mainland Australia exhibiting an isolation by distance pattern. The only known population from Tasmania is genetically and geographically isolated from mainland populations and has very low levels of genetic diversity. We provide recommendations for sourcing broodstock from mainland populations, including describing three broad areas for procuring and releasing broodstock and offspring. The markers and results reported here will prove invaluable for guiding and monitoring the outcomes of stocking and conservation activities.


Publication title

Marine and Freshwater Research








Institute for Marine and Antarctic Studies


C S I R O Publishing

Place of publication

150 Oxford St, Po Box 1139, Collingwood, Australia, Victoria, 3066

Rights statement

Copyright CSIRO 2020

Repository Status

  • Restricted

Socio-economic Objectives

Fisheries - recreational freshwater