Genetic population structure of mangrove jack, Lutjanus argentimaculatus (Forsskal)

Ovenden, JR and Street, R (2003) Genetic population structure of mangrove jack, Lutjanus argentimaculatus (Forsskal). Marine and Freshwater Research, 54 2: 127-137. doi:10.1071/MF02142

Author Ovenden, JR
Street, R
Title Genetic population structure of mangrove jack, Lutjanus argentimaculatus (Forsskal)
Journal name Marine and Freshwater Research   Check publisher's open access policy
ISSN 1323-1650
Publication date 2003-01-01
Year available 2003
Sub-type Article (original research)
DOI 10.1071/MF02142
Open Access Status Not yet assessed
Volume 54
Issue 2
Start page 127
End page 137
Total pages 11
Place of publication COLLINGWOOD
Language eng
Abstract Translocations of mangrove jack, Lutjanus argentimaculatus (Forsskal 1775), to increase angling opportunities in artificial impoundments are foreshadowed in Queensland. To evaluate genetic population structure before translocations occur, mangrove jack were collected from three sites on the Queensland coast and from one site on the north-western coast of Western Australia. Allelic variation at four dinucleotide microsatellite loci was high: gene diversity (heterozygosity) ranged from 0.602 to 0.930 and allelic counts from 10 to 24. Genetic differentiation among collection sites was weak: estimates of F(ST) were 0.002 for all four sites, and less (F(ST) = 0.001) across a major biogeographical boundary (the Torres Strait region). Nucleotide sequence from two mitochondrial regions (control, 375 base pairs, and ATPase, 415 base pairs) was obtained from a subset of the Australian and additional Indo-Pacific (Indonesian and Samoan) mangrove jack. Haplotype diversity was high (control region, 33 haplotypes for 34 fish; ATPase region, 13 haplotypes for 56 fish). Phylogenetic analysis of mitochondrial DNA sequence data could not discern a relationship between tree topology and geography. These results suggest that mangrove jack in Queensland, and possibly throughout Australia, experience high levels of gene flow. The artificial gene flow caused by permitted translocations is unlikely to exceed natural levels. Fine-scale ecological matching between donor and recipient populations may increase stocking success, and is important if translocation is needed as a species recovery tool in the future.
Keyword adaptive divergence
evolutionarily significant unit
mitochondrial DNA
New-Zealand Waters
Australian Barramundi
Molecular Variance
Stock Structure
Reef Fish
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Unknown

Document type: Journal Article
Sub-type: Article (original research)
Collection: ResearcherID Downloads - Archived
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