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Dates and Times

18 October 2019
11:30 - 12:30

Location

On-Campus
Building: 1
Room: A21

Organiser

Faculty of Science and Technology

Speakers

Foyez Shams, PhD Student, Institute for Applied Ecology

Enquiry

IAE Seminar Series - Population Genetic Structure and Breeding Activity of Two Native Fish (Golden Perch and Murray Cod) From a Managed Catchment

Golden perch (Macquaria ambigua) and Murray cod (Maccullochella peelii) are two large-bodied freshwater fish species native to Australia with significant indigenous, cultural, recreational and commercial value. Both species have widely been breeding in commercial hatcheries and stocked in different river systems of Murray Darling Basin (MDB). Lachlan, one of the largest rivers of MDB with long term isolation from the other catchments, dynamic hydrologic regime, habitat fragmentation and a long history of native fish stocking. Despite initial aim of stocking to enhance the recreational fisheries of this popular sport fishes in the Lachlan river, stocking is being considered one of the conservation efforts lately. It is yet unknown if the catchment is being maintained by either stocked or wild fish or both stocked and wild born fish coexist through natural spawning in the river. The absence ofM. ambigualarvae, evident from long term intervention monitoring project also boost the urgency of filling the knowledge gap. Aim of the present study is to investigate population genetic structure and breeding activity of golden perch and Murray cod from the Lachlan river using genetic and otolith microchemistry analysis. Outcome of the study suggests the presence of breeding activity of golden perch using otolith microchemistry analysis and null to moderate genetic structuring of golden perch and Murray cod in the Lachlan river. As a comparative tool to identify hatchery breed stocked and wild born golden perch from the Lachlan river, analysis of otolith microchemistry has been proved effective over genetic (Single Nucleotide Polymorphism and Silico/Present Absent markers) data. We also identified their mode of sex determination along with first report of karyotype.

Additional Information

Speaker bio: 

Mr Foyez Shams, PhD Student, Institute for Applied Ecology 

Foyez Shams is an international PhD student of University of Canberra. Foyez completed a Bachelor of Science degree in Fisheries and a Master of Science degree in Fish Genetics and Biotechnology from Khulna University, Bangladesh. He also worked as a research assistant in molecular genetics laboratory of Fisheries and Marine Resource Technology Discipline, Khulna University, Bangladesh. Foyez’s project is multidisciplinary and involved collaborator from industry and his supervisory panel includes Professor Tariq Ezaz (UC), Associate Professor Fiona Dyer (UC), Professor Ross Thompson (UC), Professor Richard Duncan (UC) and Dr Jason Theim (DPI Fisheries, NSW).

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