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Genetic Structure and Stock Discrimination of Hilsa(Tenualosa ilisha)   Sabuj Kanti Mazumder and Md. Samsul Alam

Genetic Structure and Stock Discrimination of Hilsa(Tenualosa ilisha)

80 страниц. 2013 год.
LAP Lambert Academic Publishing
The hilsa shad, Tenualosa ilisha is an important anadromous clupeid species from the Western division of the Indo-Pacific region. It constitutes the largest single fishable species in Bangladesh. Information on genetic variability and population structure is very important for both management and conservation purposes. We examined genetic variability and divergence in two riverine (the Jamuna and the Meghna), two estuarine (Kuakata and Sundarbans) and one marine (Cox’s Bazar) populations of T. ilisha by applying PCR-RFLP analysis of the mtDNA D-loop region. The amplified PCR products were restricted with four restriction enzymes namely, XbaI, EcoRI, EcoRV, and HaeIII. High levels of haplotype and gene diversity within and significant differentiations among, populations of T. ilisha were observed in this study. The UPGMA dendrogram based on genetic distance resulted in two major clusters, although, these were subsequently divided into three, corresponding to the riverine, estuarine and...
 
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