DELINEATING THE SPATIO-TEMPORAL VARIATION IN OTOLITH MICROCHEMISTRY OF MIGRATORY TENUALOSA ILISHA (HAMILTON, 1822) FROM BRAHMAPUTRA RIVER, INDIA
This study explores spatial and temporal variations in trace element composition in otoliths of Hilsa (Tenualosa ilisha) from two landing sites along the Brahmaputra River in Assam, India-Guwahati and Dhubri.Otoliths from 60 fish were analyzed for 14 trace elements using ICP-MS.Results showed significant spatial variation, with Chromium and Zinc dominant in Guwahati, and Copper in Dhubri.Statistical analysis indicated high classification accuracy (93.33%) in distinguishing populations.The findings highlight the use of otolith microchemistry for migratory pattern analysis and sustainable fisheries management.
Authors
- BK Bhattacharjya
- AMIYA KUMAR SAHOO
- Simanku Borah (ORCID: https://orcid.org/0000-0001-5973-6424)
- DHARMENDRA KUMAR MEENA
- Neeraj Kumar (ORCID: https://orcid.org/0000-0003-4908-2249)
- Basanta Kumar Das (ORCID: https://orcid.org/0000-0002-6629-8992)
Publication Details
- Journal
- Science and Culture
- Published
- 2025-04-17
- DOI
- https://doi.org/10.36094/sc.v91.2025.delineating_the_spatio_temporal_variation_in_otolith.borah.224
- Primary Topic
- Fish Biology and Ecology Studies
- Type
- article
- Field-Weighted Citation Impact
- 0.00
Funders
- Indian Council of Agricultural Research
- Central Inland Fisheries Research Institute, Indian Council of Agricultural Research