Genetic population structure of grey mackerel Scomberomorus semifasciatus in northern Australia
MetadataShow full item record
This study used mtDNA sequence and microsatellite markers to elucidate the population structure of Scomberomorus semifasciatus collected from 12 widespread sampling locations in Australia. Samples (n = 544) were genotyped with nine microsatellite loci, and 353 were sequenced for the control (384 bp) and ATPase (800 bp) mtDNA gene regions. Combined interpretation of microsatellite and mtDNA data identified four genetic stocks of S. semifasciatus: Western Australia, north-west coast of the Northern Territory, Gulf of Carpentaria and the eastern coast of Queensland. Connectivity among stocks across northern Australia from the Northern Territory to the eastern coast of Queensland was high (mean F ST = 0·003 for the microsatellite data and F ST = 0·033 and 0·009 for control region and ATPase, respectively) leading to some uncertainty about stock boundaries. In contrast, there was a clear genetic break between the stock in Western Australia compared to the rest of northern Australia (mean F ST = 0·132 for the microsatellite data and F ST = 0·135 and 0·188 for control region and ATPase, respectively). This indicates a restriction to gene flow possibly associated with suboptimal habitat along the Kimberley coast (north Western Australia). The appropriate scale of management for this species corresponds to the jurisdictions of the three Australian states, except that authorities in Queensland and Northern Territory should co-ordinate the management of the Gulf of Carpentaria stock. © 2011 State of Queensland. Journal of Fish Biology © 2011 The Fisheries Society of the British Isles.
Showing items related by title, author, creator and subject.
Stock structure of Lethrinus laticaudis (Lethrinidae) across northern Australia determined using genetics, otolith microchemistry and parasite assemblage compositionBarton, D.; Taillebois, L.; Taylor, J.; Crook, D.; Saunders, T.; Hearnden, M.; Greig, A.; Welch, D.; Newman, Stephen; Travers, M.; Saunders, R.; Errity, C.; Maher, S.; Dudgeon, C.; Ovenden, J. (2018)The grass emperor Lethrinus laticaudis is a conspicuous element of the commercial and recreational catch from nearshore reef systems across northern Australia. The nearshore reef systems across northern Australia are ...
Spatial variation in life history reveals insight into connectivity and geographic population structure of a tropical estuarine teleost: King threadfin, Polydactylus macrochirMoore, B.; Simpfendorfer, C.; Newman, Stephen; Stapley, J.; Allsop, Q.; Sellin, M.; Welch, D. (2012)Understanding the life history of exploited fish species is not only critical in developing stock assessments and productivity models, but has a dual function in the delineation of connectivity and geographical population ...
Integrating different approaches in the definition of biological stocks: A northern Australian multi-jurisdictional fisheries example using grey mackerel, Scomberomorus semifasciatusWelch, D.; Newman, Stephen; Buckworth, R.; Ovenden, J.; Broderick, D.; Lester, R.; Gribble, N.; Ballagh, A.; Charters, R.; Stapley, J.; Street, R.; Garrett, R.; Begg, G. (2015)A holistic approach to stock structure studies utilises multiple different techniques on the same individuals sampled from selected populations and combines results across spatial and temporal scales to produce a weight ...