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Stirred but not shaken: population and recruitment genetics of the scallop (Pecten fumatus) in Bass Strait, Australia
Citation
Ovenden, JR and Tillett, BJ and Macbeth, M and Broderick, D and Filardo, F and Street, R and Tracey, SR and Semmens, J, 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 1054-3139 (2016) [Refereed Article]
Copyright Statement
Copyright 2016 International Council for the Exploration of the Sea
DOI: doi:10.1093/icesjms/fsw068
Abstract
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.
Item Details
| Item Type: | Refereed Article |
|---|---|
| Keywords: | discriminant analysis of principal components, micro satellite, fisheries management, scallop, self-recruitment |
| 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 - wild caught not elsewhere classified |
| UTAS Author: | Tracey, SR (Associate Professor Sean Tracey) |
| UTAS Author: | Semmens, J (Professor Jayson Semmens) |
| ID Code: | 109437 |
| Year Published: | 2016 |
| Web of Science® Times Cited: | 2 |
| Deposited By: | Sustainable Marine Research Collaboration |
| Deposited On: | 2016-06-16 |
| Last Modified: | 2017-11-03 |
| Downloads: | 0 |
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