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Population genetic structure of estuary perch (Percalates colonorum Gunther) in south-eastern Australia
Citation
Stoessel, DJ and van Rooyen, AR and Beheregaray, LB and Raymond, SMC and van Wyk, B and Haddy, J and Lieschke, J and Weeks, AR, Population genetic structure of estuary perch (Percalates colonorum Gunther) in south-eastern Australia, Marine and Freshwater Research, 72, (2) pp. 263-274. ISSN 1323-1650 (2020) [Refereed Article]
Copyright Statement
Copyright CSIRO 2020
DOI: doi:10.1071/MF20024
Abstract
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.
Item Details
Item Type: | Refereed Article |
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Keywords: | estuary perch, genetics, stock structure, conservation, fishery, genetic diversity, stocking, supplementation |
Research Division: | Agricultural, Veterinary and Food Sciences |
Research Group: | Fisheries sciences |
Research Field: | Aquaculture and fisheries stock assessment |
Objective Division: | Animal Production and Animal Primary Products |
Objective Group: | Fisheries - wild caught |
Objective Field: | Fisheries - recreational freshwater |
UTAS Author: | Haddy, J (Dr James Haddy) |
ID Code: | 140090 |
Year Published: | 2020 |
Deposited By: | Fisheries and Aquaculture |
Deposited On: | 2020-07-24 |
Last Modified: | 2022-07-07 |
Downloads: | 0 |
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