Copyright © HT Media Limited All rights reserved. We note that empirically testing these hypotheses will require further characterization of the remaining putatively adaptive loci based on a more complete whole-genome sequence and at a larger regional level constituting the native distribution of Hilsa shad. Other names of Hilsa fish are Herring or Indian Shad . Hilsa or 'Ilish' is considered a delicacy in Bangladesh and West Bengal. PubMed  Watch. https://doi.org/10.1038/s41598-019-52465-2, DOI: https://doi.org/10.1038/s41598-019-52465-2, Frontiers in Marine Science Our results also revealed that genes involved in neuronal activity may have facilitated the juveniles’ Hilsa shad in returning to their respective natal rivers for spawning. Plos ONE 8(10), e77044 (2013). Other three loci (82109_13, 52941_15 and 44093_43) were found to be involved in neuronal activity important for neural communication and responsible to control a range of behavioral phenotypes. Our raw data with SRA accession number PRJNA503852 are available online in the NCBI sequence read archive (https://www.ncbi.nlm.nih.gov/sra/PRJNA503852, data publicly released on 31st December 2018). PubMed  For the 14,815 putatively neutral loci, pairwise FST values ranged from 0.0109 to 0.0156 and averaged 0.0132 (Table 1). Prior r = 0.59, 95% CL = 0.39 - 0.89, Based on 4 stock assessments. Conceived and designed the research: L.L.W. Get the most important science stories of the day, free in your inbox. Kopelman, N. M., Mayzel, J., Jakobsson, M., Rosenberg, N. A. Analyzed the sequenced data, performed the annotation analysis, interpreted the data and wrote the paper: L.L.W. Breeds mainly in rivers, upstream to about 50 km or even over 1000 km as in the Ganges (younger fishes may breed in the tidal zone of rivers). Sci Rep 9, 16050 (2019). In those days the fish were big and we caught plenty. The presence of shared haplotypes in most populations is either the restricted gene flow among local populations or the predominance of ancestral haplotypes65. Isoforms are messenger RNAs resulted from transcription of the same gene locus but at a different transcription start sites (TSSs) or untranslated regions (UTRs), which results in alteration of gene functions61. and M.A. https://www.ncbi.nlm.nih.gov/sra/PRJNA503852, http://creativecommons.org/licenses/by/4.0/, https://doi.org/10.1038/s41598-019-52465-2, Morpho-Genetic Divergence and Adaptation of Anadromous Hilsa shad (Tenualosa ilisha) Along Their Heterogenic Migratory Habitats, Genomic islands of divergence infer a phenotypic landscape in Pacific lamprey, Skim-Sequencing Based Genotyping Reveals Genetic Divergence of the Wild and Domesticated Population of Black Tiger Shrimp (Penaeus monodon) in the Indo-Pacific Region, Population Genomics of an Anadromous Hilsa Shad Tenualosa ilisha Species across Its Diverse Migratory Habitats: Discrimination by Fine-Scale Local Adaptation. Skovrind, M. et al. Moreover, we also hypothesized that the lower water discharge from the upstream river flow from Farakka barrage (in the West Bengal, India) with constant heavy siltation may have disrupted the migration routes of the anadromous Hilsa shad ascending tributaries in the Western Riverine habitats11. The programme will seek to establish the current migration pattern of the fish upstream of Farakka Barrage in West Bengal by tagging the fish with Floy T-bar anchor tags — an external tag put between the fish bones — and other advanced technologies like sensor-based tagging. For decades fishermen in Myanmar have caught and sold the hilsa fish, but overfishing and poor regulation is taking a terrible toll, as the BBC's Ko Ko Aung reports. We also investigated the correlation of population differentiation (FST) and geographic distance. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. The authors declare no competing interests. Journal of Biochemistry and Molecular Biology 36, 643–652 (2003). PubMed  Until today, two important questions about the population genetic structure and parental assignment remained unclear: (1) What is the degree of genetic differences among the Hilsa shad populations available in different migratory routes of the species? This finding was consistent with the major groupings in the above-mentioned analyses, in which individuals of Chandpur and Surma-Kushiara River were clustered as Eastern Riverine group. A de novo reference was created by collecting 10 million reads in total, evenly from the samples, and excluding reads that had counts of <7 or >1000. Scientific Reports. the best experience, we recommend you use a more up to date browser (or turn off compatibility mode in U Kauk Tin, 65, is one of many fishermen in the Irrawaddy delta of Myanmar (also called Burma) struggling to get by as the fish they rely on for their daily income disappear from the rivers. PubMed Central  Molecular Biosystem 11, 1378–1388 (2015). The video shows that she is equally fluent in Hindi. 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