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International Journal of Zoology and Applied Biosciences Research Article
Ovarian Development Across Maturity Stages in Barilius bendelisis: A Histological Study from the Manas River, Assam, India
Fariha Jabeen, Bandita Talukdar, Dhruvajit Kalita and Anjam Hussain Barbhuiya
Year : 2025 | Volume: 10 | Issue: 4 | Pages: 132-135
Received on: 20/05/2025
Revised on: 28/05/2025
Accepted on: 26/06/2025
Published on: 31/07/2025
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Fariha Jabeen, Bandita Talukdar, Dhruvajit Kalita and Anjam Hussain Barbhuiya( 2025).
Ovarian Development Across Maturity Stages in Barilius bendelisis: A Histological Study from the Manas River, Assam, India
. International Journal of Zoology and Applied Biosciences, 10( 4), 132-135.
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Abstract
Histological analysis was conducted on ovarian development in Barilius bendelisis collected from Manas River, Assam, India, from November 2019 to November 2021. Five distinct phases of oocyte development were identified during the study. To facilitate the use of both microscopic and macroscopic observations, a gonad maturation scale was devised and adapted to align with the commonly employed unaided visual observation. The four stages correspond with those described macroscopically for various species of Cypriniformes. These ovaries showed few atretic oocytes. The study revealed that B. bendelisis is a double-spawner, engaging in two breeding seasons, one from December to April and the other from August to September. Vitellogenic oocytes were specifically observed during the autumn and winter periods.
Keywords
Barilius bendelisis, Cypriniformes, Development, Gonad, Oocyte.
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© The Author(s) 2025. This article is published by International Journal of Zoology and Applied Biosciences under the terms of the Creative Commons Attribution 4.0 International License (creativecommons.org), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
