Abstract
The genetic variation of eels larvae Anguilla spp. which had migrated to the estuaries of North Pagai Island at Mentawai Islands was studied from September 2016 to January 2017. The objective of the present study was to validate the species composition of eels larvae that migrated to estuary of North Pagai Mentawai Islands, West Sumatra Province, Indonesia. The eels larvae were collected from Mabola, Simpungan, Saumanganya, and Taikako estuaries. A total of 10 samples from every location were used to analyse the genetic variation of eels. The result showed that the heterozygosities of Anguilla marmorata and A. bicolor pacifica are highest in Saumanganya estuary, 0.1863 and 0.1840, respectively, while A. bicolor bicolor is the highest in Taikako estuary (0.1518). Gene flow (Nm) values of eels A. marmorata, A. bicolor bicolor, and A. bicolor pacifica were 0.3656, 0.5309, and 0.4679, respectively The genetic differentiation value (Gst) of A. marmorata, A. bicolor bicolor, and A. bicolor pacifica were 0.8677, 0.4418, and 0.5686, respectively It is concluded that the genetic variation of inter-populations and intra-populations of A. marmorata was higher than A. bicolor bicolor and A. bicolor pacifica.
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