SNP discovery and population structure analysis in Lassi and Marecha camel breeds using a genotyping by sequencing...

Area of Science:

• Animal Genetics
• Molecular Biology
• Zoology

Background:

• Pakistani camels are socio-geographically divided into 20 breeds.
• The genetic basis of these breeds and their evolutionary pressures are not well understood.
• Molecular data can potentially differentiate these breeds.

Purpose of the Study:

• To investigate genetic diversity and population structure within and between Marecha and Lassi camel breeds.
• To identify single nucleotide polymorphisms (SNPs) for future camel genetic studies.
• To establish a foundation for understanding Pakistani camel breed genetics.

Main Methods:

• Genotyping by sequencing (GBS) to identify 63,619 SNPs.
• Quality control and selection of 36,926 SNPs for analysis.
• Population structure analysis using Principal Coordinate Analysis (PCoA) and NetView cluster analysis.
• Exploration of genetic variation using multilocus heterozygosity and fixation index (F_ST).

Main Results:

• Marecha breed exhibited higher genetic diversity compared to the Lassi breed.
• Significant genetic variation was observed within and between the two breeds.
• The study successfully identified a substantial panel of SNPs for camel populations.
• Comparison of SNP-based relationship matrices validated the GBS data.

Conclusions:

• The identified SNPs are crucial for future genetic research and breed characterization in camels.
• Genetic diversity varies between Pakistani camel breeds, highlighting the need for breed-specific conservation strategies.
• This study lays the groundwork for understanding the genetic architecture of Pakistani camel breeds.