Molecular characterization of marine and coastal fishes of Bangladesh through DNA barcodes

Abstract

Bangladesh has vast coastal and marine resources along its south edge as the Bay of Bengal is situated in the south of Bangladesh.There are a total of 166,000 square km water areas including the Exclusive Economic Zone (EEZ) which is larger than the country's total land area of 147,500 square km. The country is rich not only in terms of its vast water areas but also in terms of biological diversity.The marine fisheries sector plays an important role in the economy of Bangladesh in terms of nutrition, income, employment, and foreign exchange earnings (DoF, 2018). Fish provides about 60% of animal protein in the daily dietary requirement of 160 million people of the country. Marine fisheries alone contribute 654,687 metric tons which is 15.31% of the country's total fish production (DoF, 2018).Nonetheless, description and information of marine fishes of Bangladesh are scattered throughout a wide range of scientific

Saint Peter and Saint Paul Archipelago barcoded: fish diversity in the remoteness and DNA barcodes reference library for metabarcoding monitoring

“…The differentiation between species through individual COI barcodes validates the e ciency of COI barcodes for identifying marine sh species. Among the sequences, the AT content (56.30%) was higher than the GC content (43.70%), which is congruent with the constructed SPSPA sh database (AT content: 55.70%) and other COI barcoding of marine sh studies (Ward et al 2005;Steinke et al 2009;Mecklenburg et al 2010;Zhang & Hanner 2011;WS et al 2011;Costa et al 2012;Ribeiro et al 2012;Knebelsberger et al 2014;Bingpeng et al 2018;Limmon et al 2020;Ghouri et al 2020;Ahmed et al 2021). Also, the constructed Neighbor-Joining tree clustered with coherency closely related species under the same nodes, while dissimilar species were clustered under separate nodes.…”

“…The mitochondrial COI gene has been barcoding sh species with high e ciency (Ward 2012;Ward et al 2009). The marine ichthyofauna was successfully characterized in Australia (Ward et al 2005), Antarctic (Rock et al 2008;Mabragaña et al 2016), Canada (Steinke et al 2009), the Arctic (Mecklenburg et al 2010), Japan (Zhang & Hanner 2011), India (WS et al 2011, Portugal (Costa et al 2012), Brazil (Ribeiro et al 2012), Germany (Knebelsberger et al 2014), Taiwan (Bingpeng et al 2018), Indonesia (Limmon et al 2020), Pakistan (Ghouri et al 2020), and Bangladesh (Ahmed et al 2021).…”

“…The feasibility of new records for the region is sustained by the fact that the DNA barcoding revolution has hastened species discovery during the last 15 years (Cao et al 2016;DeSalle & Goldstein 2019;Lopez-Vaamonde et al 2021). In turn, efforts to collect and barcode sh species from speci c regions aided new sh records in other regions of the globe (Steinke et al 2017;Ahmed et al 2021).…”

Saint Peter and Saint Paul Archipelago barcoded: Fish diversity in the remoteness and DNA barcodes reference library for metabarcoding monitoring

“…The marine ichthyofauna was successfully characterized in Australia ( Ward et al , 2005 ), the Antarctic ( Rock et al, 2008 ; Mabragaña et al, 2016 ), Canada ( Steinke et al, 2009 ), the Arctic ( Mecklenburg et al, 2010 ), Japan ( Zhang and Hanner, 2011 ), India ( Lakra et al, 2011 ), Portugal ( Costa et al, 2012 ), Brazil ( Ribeiro et al, 2012 ), Germany ( Knebelsberger et al , 2014 ), Taiwan ( Bingpeng et al, 2018 ), Indonesia ( Limmon et al, 2020 ), Pakistan ( Ghouri et al. , 2020 ), and Bangladesh ( Ahmed et al, 2021 ).…”

“…The feasibility of gathering new species’ records for the region is sustained by the fact that the DNA barcoding revolution has hastened species discovery during the last 15 years ( Cao et al, 2016 ; DeSalle and Goldstein, 2019 ; Lopez-Vaamonde et al, 2021 ). In turn, efforts to collect and barcode fish species from specific regions aided new fish records in other regions of the globe, such as Bangladesh, Sri Lanka, and the Bay of Bengal ( Rathnasuriya et al, 2019 ; Ahmed et al, 2021 ; Sharifuzzaman et al, 2021 ).…”