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Stirred but not shaken: Population and recruitment genetics of the scallop (Pecten fumatus) in Bass Strait, Australia

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Ovenden, J. R., Tillett, B.J., Macbeth, M., Broderick, D., Filardo, F. F., Street, R., Tracey, S.R. and Semmens, J. (2016) Stirred but not shaken: Population and recruitment genetics of the scallop (Pecten fumatus) in Bass Strait, Australia. ICES Journal of Marine Science, 73 (9). pp. 2333-2341. ISSN 10543139 (ISSN)

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Article Link: https://doi.org/10.1093/icesjms/fsw068


We report population genetic structure and fine-scale recruitment processes for the scallop beds (Pecten fumatus) in Bass Strait and the eastern coastline of Tasmania in southern Australia. Conventional population pairwise FST analyses are compared with novel discriminant analysis of principal components (DAPC) to assess population genetic structure using allelic variation in 11 microsatellite loci. Fine-scale population connectivity was compared with oceanic features of the sampled area. Disjunct scallop beds were genetically distinct, but there was little population genetic structure between beds connected by tides and oceanic currents. To identify recruitment patterns among and within beds, pedigree analyses determined the distribution of parent-offspring and sibling relationships in the sampled populations. Beds in northeastern Bass Strait were genetically distinct to adjacent beds (FST 0.003-0.005) and may not contribute to wider recruitment based on biophysical models of larval movement. Unfortunately, pedigree analyses lacked power to further dissect fine-scale recruitment processes including self-recruitment. Our results support the management of disjunct populations as separate stocks and the protection of source populations among open water beds. The application of DAPC and parentage analyses in the current study provided valuable insight into their potential power to determine population connectivity in marine species with larval dispersal. © 2016 International Council for the Exploration of the Sea 2016. All rights reserved.

Item Type:Article
Corporate Creators:Department of Agriculture and Fisheries, Queensland
Business groups:Crop and Food Science
Keywords:Discriminant Analysis of Principal Components fisheries management microsatellite self-recruitment allele biophysics connectivity discriminant analysis disjunct distribution fishery management genetic marker genetic variation recruitment (population dynamics) scallop culture Australia Bass Strait Tasmania Pecten fumatus
Subjects:Aquaculture and Fisheries > Fisheries
Aquaculture and Fisheries > Fisheries > By region or country > Australia
Aquaculture and Fisheries > Fisheries > Fishery research
Aquaculture and Fisheries > Fisheries > Shellfish fisheries
Live Archive:13 Apr 2023 03:51
Last Modified:13 Apr 2023 03:52

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