TAILIEUCHUNG - Some aspects of reproductive biology of gangetic ailia, Ailia coila (Hamilton, 1822) in Bangladesh

In the case of length weight relationship (LWR), the coefficient of determination value (r2 ) was found and the slope was found b = which indicated the pattern of negative allometric growth of this species as b | ACADEMIA JOURNAL OF BIOLOGY 2023 45 3 1 11 DOI 2615-9023 18360 SOME ASPECTS OF REPRODUCTIVE BIOLOGY OF GANGETIC AILIA Ailia coila HAMILTON 1822 IN BANGLADESH David Rintu Das1 Mahmudul Hasan Mithun1 Md. Moniruzzaman1 Yahia Mahmud2 1 Bangladesh Fisheries Research Institute Floodplain Sub-station Santahar Bogura Bangladesh 2 Bangladesh Fisheries Research Institute Headquarters Mymensingh Bangladesh Received 22 May 2023 accepted 19 September 2023 ABSTRACT The present study was conducted by Bangladesh Fisheries Research Institute Floodplain Sub- station to investigate the reproductive biology of Ailia coila in the northern region of Bangladesh. A total number of 100 fish samples were collected on a monthly basis from the Atrai River and Jamuna River during the period from January 2022 to December 2022. The highest mean value of the gonado-somatic index GSI was recorded in July whereas the lowest was found in December . The highest individual fecundity 2 450 570 and ova diameter mm was also observed in July. From the histological observation of the ovary the highest percentages 75 of mature oocytes were observed during the month of July. Based on the GSI fecundity and gonadal histology the breeding season of A. coila was observed from June to August with a remarkable peak in July. In the case of length weight relationship LWR the coefficient of determination value r2 was found and the slope was found b which indicated the pattern of negative allometric growth of this species as b lt 3. In contrast an increase was recorded in the fecundity associated with the rise of total length body weight and gonad weight showed a significant linear relationship. This study would assist in the development of induced breeding techniques and provide valuable information for the sustainable management of this population in the inland open ecosystem. Keywords Bangladesh Breeding season Fecundity GSI Gonadal histology Length-Weight- .

• Sinh học
• Breeding season
• Gonadal histology
• Length Weight Fecundity relationship
• Ailia coila
• Seasonal wetland
• Equine chorionic gonadotropin
• Induction of estrus
• Reproductive patterns
• Assaf ewes out of breeding season
• Normal moisture condition
• Path coefficient analysis
• Season drought conditions
• Yield and yield component traits
• Advanced breeding lines
• Chilled semen
• Egg yolk
• Time of storage
• Non breeding season
• Chilled ram semen collected
• BMC Genomics
• Male giant panda
• Immune change
• RNA seq
• Threatened endemic
• Journal of Zoology
• Bufo bufo
• Weather parameters
• Relative humidity
• Duration of the breeding season
• Seminal plasma
• Haptoglobin in seminal plasma
• Seminal plasma of Awassi rams
• Semen parameters
• Pineal gland
• Animal reproduction
• Including seasonal reproduction
• En dogenous noncoding RNAs
• Health status
• Seasonal fluctuation
• Physicochemical properties
• Diversity indices
• Seasonal fluctuation of physicochemical properties
• Physicochemical parameters
• Water quality analysis
• Surajpur wetland
• National capital region
• Physicochemical characteristics of water samples