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Novel Sequence Discovery by Subtractive Genomics
Published on: January 25, 2019
Single nucleotide polymorphism discovery in cutthroat trout subspecies using genome reduction, barcoding, and 454
Derek D Houston1, David B Elzinga, Peter J Maughan
1Department of Biology, Brigham Young University, Provo, UT 84602, USA. derek.d.houston@gmail.com
BMC Genomics
|December 25, 2012
Summary
Researchers developed new genetic markers to identify cutthroat trout subspecies. These single nucleotide polymorphisms (SNPs) help assess genetic diversity and aid conservation efforts for native salmonid populations.
Area of Science:
- Genetics
- Conservation Biology
- Fisheries Science
Background:
- Widespread stocking of salmonids has led to genetic mixing, threatening native populations.
- Cutthroat trout subspecies face hybridization risks with introduced rainbow trout and among themselves.
- Effective management requires accurate assessment of genetic composition in cutthroat trout populations.
Purpose of the Study:
- To discover genetic markers for differentiating cutthroat trout subspecies.
- To develop a rapid and cost-effective method for characterizing cutthroat trout genetic composition.
Main Methods:
- Genome reduction and next-generation sequencing (454-pyrosequencing) were employed.
- Putative single nucleotide polymorphisms (SNPs) were identified and validated.
- SNP primers were developed to amplify target regions in cutthroat and rainbow trout.
Main Results:
- Over 1.4 million reads were generated, identifying over 43,000 putative SNPs.
- 125 SNP primers were successfully developed and amplified.
- These SNPs effectively differentiated most cutthroat trout subspecies.
Conclusions:
- Developed 125 nuclear SNPs capable of differentiating cutthroat trout subspecies.
- These SNPs provide a valuable tool for management agencies to assess genetic structure.
- Enables informed conservation planning for native cutthroat trout populations.
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