Microsatellite-based genetic monitoring to detect cryptic demographic bottleneck in Indian riverine buffaloes (<Emphasis Type="Italic">Bubalus bubalis</Emphasis>) |
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| Authors: | Ranjit S Kataria Periasamy Kathiravan Shyam S Bulandi D Pandey Bishnu P Mishra |
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| Institution: | (1) National Bureau of Animal Genetic Resources, P.B. No. 129, GT Road Bypass, Karnal, Haryana, 132 001, India; |
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| Abstract: | The present study was undertaken to evaluate different Indian riverine buffalo breeds (Bubalus bubalis) for mutation drift equilibrium and occurrence of any recent genetic bottleneck. A total of 330 animals from seven different
breeds were analyzed with a set of 24 heterologous microsatellite markers. Three different tests revealed significant heterozygosity
excess in all the seven buffalo breeds studied when assumed under infinite alleles model of microsatellite evolution, while
it was the reverse with no significant heterozygosity excess when assumed under conservative stepwise mutation model. Under
the two-phase model, all the buffalo breeds except Mehsana were found to be in mutation drift equilibrium when evaluated by
all the three statistical methods. Standardized differences test and Wilcoxon signed-rank test revealed significant heterozygosity
excess suggesting possible cryptic demographic bottleneck in Mehsana buffaloes of Western India. |
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