DNA BARCODING AND PHYLOGENETIC ANALYSIS OF SOME GASTROPOD MOLLUSCS (CLASS-GASTROPODA) FROM THREE ECOLOGICAL HABITATS OF BANGLADESH

Mysha Mahjabin; Zerin Tasnim; Sujan Kumar Datta; Wahida Haque; Md. Sagir Ahmed

doi:10.3329/brc.v9i2.67082

Authors

Mysha Mahjabin Department of Zoology, University of Dhaka, Dhaka 1000, Bangladesh
Zerin Tasnim Department of Zoology, University of Dhaka, Dhaka 1000, Bangladesh
Sujan Kumar Datta Department of Zoology, University of Dhaka, Dhaka 1000, Bangladesh
Wahida Haque Department of Fisheries, University of Dhaka, Dhaka 1000, Bangladesh
Md. Sagir Ahmed Department of Zoology, University of Dhaka, Dhaka 1000, Bangladesh

DOI:

https://doi.org/10.3329/brc.v9i2.67082

Keywords:

DNA Barcoding, gastropod, Mollusca, 16S rRNA, COI

Abstract

An attempt has been made for molecular characterization of gastropods from three different ecological habitats (marine, freshwater and terrestrial) in Bangladesh. A total of eight species of gastropod (Lissachatina fulica, Pila globosa, Pila virens, Brotia costula, Nerita articulata, Nerita balteata, Macrochlamys indica and Telescopium telescopium) were identified belongs to seven genera and six families. These species were confirmed through morphological studies and by adopting DNA barcoding using mitochondrial cytochrome c oxidase subunit I (COI) and 16S ribosomal RNA (16S rRNA) gene. The average GC content 39.53% and 33.40% were found for COI and 16S rRNA, respectively. Genetic divergence increased as predicted with higher taxonomic rank, ranging from 0% to 2.84% with an average 1.45% within species and 3.57% to 35.23% between species with a DNA barcoding gap of 0.73 for 16S. This study revealed that gastropod species can be discriminated using both COI and 16S rRNA gene. Phylogenetic relationships among identified species were established where individuals belonging to the same species were grouped under the same clade. Molecular characterization of remaining molluscan species of Bangladesh remains to be completed.

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