Development and validation of microsatellite markers in a protandrous fish species Eleutheronema tetradactylum (Shaw, 1804) through cross-species amplification

Shihab Ismail, N. Vineesh, C. Mohitha, P. Vijayagopal, A. Gopalakrishnan

Abstract


The four fingered threadfin Eleutheronema tetradactylum (Shaw, 1804) is a prioritised species for mariculture in India. Their demand in the domestic markets is rapidly growing. Genetic stock structure analysis of fish populations is an important aspect from fisheries management perspective. The present study was conducted to develop microsatellite primers through cross-priming to elucidate the genetic structure of E. tetradactylum. A total of 13 polymorphic microsatellite markers were developed from the resource species, Pacific salmon Polydactylus sexfilis. The observed mean and the effective number of alleles were found to be 11.962 and 6.927 respectively. The mean of observed heterozygosity (Ho) and expected heterozygosity (He) values obtained were 0.784 and 0.798 respectively. These new microsatellite markers can be used as effective tools for studying genetic disparity as well as for elucidating evolutionary relationships among E. tetradactylum populations.

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