TY - JOUR AU - Sultana, KS AU - Brishti, PS AU - Ahmed, S AU - Billah, MB AU - Habib, KA PY - 2021/07/11 Y2 - 2024/03/29 TI - Morphological and Molecular Characterization of Several Neogastropod Species (Mollusca: Gastropoda) From Coastal Waters of Bangladesh With One New Record JF - Journal of Bio-Science JA - J bio-sci. VL - 29 IS - SE - Articles DO - 10.3329/jbs.v29i0.54824 UR - https://www.banglajol.info/index.php/JBS/article/view/54824 SP - 79-91 AB - <p>The present study reports the morphological and molecular characterization of marine neogastropods collected from the South-East to the South-West coasts of Bangladesh. A total of 21 species under 13 families were identified morphologically, of which 7 species were barcoded successfully using partial sequence of mitochondrial cytochrome oxidase subunit-I (COI) gene. The average nucleotide frequencies of these species were G (guanine) = 20.57%, C (cytosine) = 18.44%, A (adenine) = 23.65%, T (thymine) = 37.35% and the GC content was 39.01%. The average Kimura two-parameter (K2P) distances of the COI barcode sequences within species, genera, and families were 20.7%, 22.0%, and 22.0%, respectively. The average inter-species genetic divergence was calculated as 21.0%<strong>. </strong>In addition, the COI barcode sequence of <em>Nassarius stolatus </em>was identified and submitted to the GenBank for the first time. The study also reports the new record of a species, <em>Indothais rufotincta </em>Tan &amp; Sigurdsson, 1996 from Bangladesh. This finding greatly extends the distributional range of this species from the West coast to the East coast of the Bay of Bengal.</p><p>J. Bio-Sci. 29(1): 79-91, 2021 (June)</p> ER -