scholarly journals Differing impact of a major biogeographic barrier on genetic structure in two large kangaroos from the monsoon tropics of Northern Australia

2014 ◽  
Vol 4 (5) ◽  
pp. 554-567 ◽  
Author(s):  
Mark D. B. Eldridge ◽  
Sally Potter ◽  
Christopher N. Johnson ◽  
Euan G. Ritchie
Keyword(s):  
Genetic Structure ◽  
Northern Australia ◽  
Biogeographic Barrier

scholarly journals Characterization, development and multiplexing of microsatellite markers in three commercially exploited reef fish and their application for stock identification

PeerJ ◽  
2016 ◽  
Vol 4 ◽  
pp. e2418 ◽  
Author(s):  
Laura Taillebois ◽  
Christine Dudgeon ◽  
Safia Maher ◽  
David A. Crook ◽  
Thor M. Saunders ◽  
...  
Keyword(s):  
Next Generation Sequencing ◽  
Genetic Structure ◽  
Reef Fish ◽  
Illumina Miseq ◽  
Design Criteria ◽  
Stock Identification ◽  
Northern Australia ◽  
Reef Fish Species ◽  
Generation Sequencing

Thirty-four microsatellite loci were isolated from three reef fish species; golden snapperLutjanus johnii, blackspotted croakerProtonibea diacanthusand grass emperorLethrinus laticaudisusing a next generation sequencing approach. Both IonTorrent single reads and Illumina MiSeq paired-end reads were used, with the latter demonstrating a higher quality of reads than the IonTorrent. From the 1–1.5 million raw reads per species, we successfully obtained 10–13 polymorphic loci for each species, which satisfied stringent design criteria. We developed multiplex panels for the amplification of the golden snapper and the blackspotted croaker loci, as well as post-amplification pooling panels for the grass emperor loci. The microsatellites characterized in this work were tested across three locations of northern Australia. The microsatellites we developed can detect population differentiation across northern Australia and may be used for genetic structure studies and stock identification.

Population genetic structure of the brown tiger prawn, Penaeus esculentus, in tropical northern Australia

2005 ◽  
Vol 148 (3) ◽  
pp. 599-607 ◽  
Author(s):  
Robert D. Ward ◽  
Jennifer R. Ovenden ◽  
Jennifer R. S. Meadows ◽  
Peter M. Grewe ◽  
Sigrid A. Lehnert
Keyword(s):  
Genetic Structure ◽  
Population Genetic Structure ◽  
Population Genetic ◽  
Northern Australia ◽  
Tiger Prawn

Elucidation of fine-scale genetic structure of sandfish (Holothuria scabra) populations in Papua New Guinea and northern Australia

2017 ◽  
Vol 68 (10) ◽  
pp. 1901 ◽  
Author(s):  
Samantha J. Nowland ◽  
Paul C. Southgate ◽  
Rose K. Basiita ◽  
Dean R. Jerry
Keyword(s):  
Genetic Structure ◽  
Papua New Guinea ◽  
Population Genetic Structure ◽  
Population Genetic ◽  
Isolation By Distance ◽  
Allelic Diversity ◽  
New Guinea ◽  
Northern Australia ◽  
Holothuria Scabra ◽  
Current Population

The development of a sandfish (Holothuria scabra) mariculture industry within Papua New Guinea (PNG) is of great socio-economic importance. However, the lack of knowledge surrounding the current population genetic structure throughout the region has raised concern about the genetic impacts of hatchery-augmented sea ranching on already diminished wild populations. The present study evaluated the current population genetic structure of sandfish within PNG, and more broadly across northern Australia, to inform sustainable mariculture practices and provide baseline genetic data within these regions. Microsatellite-based population genetic analyses were used to determine the genetic diversity within subpopulations. This analysis found that although microsatellite loci varied widely in the number of alleles (3–28), the overall allelic diversity was similar among all populations sampled. The level of genetic substructuring among all populations sampled was low, although significant (FST=0.037, P=0.000). Most of these differences were driven by distinctness of the Australian populations from those in PNG, whereby results indicated that PNG populations exhibited a panmictic stock structure. No distinct patterns of genetic isolation by distance were detected among the populations examined. Information obtained from the present study will improve the management of restocking programs and support a sustainable future for the PNG sandfish mariculture industry.

scholarly journals A Biogeographic Barrier Test Reveals a Strong Genetic Structure for a Canopy-Emergent Amazon Tree Species

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Alison G. Nazareno ◽  
Christopher W. Dick ◽  
Lúcia G. Lohmann
Keyword(s):  
Genetic Structure ◽  
Life Histories ◽  
Genomic Data ◽  
Snp Markers ◽  
Genetic Barrier ◽  
Future Studies ◽  
Population Genomic ◽  
Rio Negro ◽  
Flooded Forests ◽  
Biogeographic Barrier

AbstractWallace’s (1854) Riverine Barrier hypothesis is one of the earliest explanations for Amazon biotic diversification. Despite the importance of this hypothesis for explaining speciation in some animal groups, it has not been studied extensively for plant species. In this study we use a prominent Amazon tree, Buchenavia oxycarpa (Mart.) Eichler (Combretaceae), to evaluate Wallace’s hypothesis along the Rio Negro, a major Amazon tributary that has driven allopatric speciation for several animal taxa. We sampled six individuals from sixteen localities along both river banks, and used a modified ddRADseq protocol to identify SNP markers. Our population genomic data revealed strong genetic structure for B. oxycarpa sampled across banks of the Rio Negro (ϕCT = 0.576, P < 0.001), supporting the hypothesis that the Rio Negro acted as a significant genetic barrier for B. oxycarpa. Our study shows that gene flow for this large and well-dispersed Amazon tree is impeded by riverine barriers, though this has not yet resulted in speciation. Future studies focused on species with different life histories, including species restricted to non-flooded forests, are needed to further advance our understanding of Amazon rivers as drivers of biotic diversification.

Distribution, seasonal movements and habitat utilisation of an endangered shark, Glyphis glyphis, from northern Australia

2017 ◽  
Vol 573 ◽  
pp. 203-213 ◽  
Author(s):  
BJ Lyon ◽  
RG Dwyer ◽  
RD Pillans ◽  
HA Campbell ◽  
CE Franklin
Keyword(s):  
Northern Australia ◽  
Seasonal Movements
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