Dynamics of reproductive ecology of the fish Ompok bimaculatus (Siluriformes: Siluridae) in six tropical rivers of the Ganges basin, India
The silurid butter catfish, Ompok bimaculatus (Bloch, 1794), is widely distributed in the plains and sub-mountain regions of India, but not enough is known about its reproductive potential is still insufficient. The present study evaluated the comparative reproductive potential (in terms of sex rati...
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| Format: | Article |
| Language: | English |
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Universidad Estatal a Distancia (UNED)
2017-03-01
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| Series: | Cuadernos de investigación UNED |
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| Online Access: | https://revistas.uned.ac.cr/index.php/cuadernos/article/view/1681 |
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| author | Agnihotri Praveen Sarkar Uttam Kumar Nagpure Naresh Sahebrao Mishra Rahsya Mani Kumar Ravindra Awasthi Abhishek Pandey Brijesh Kumar |
| author_facet | Agnihotri Praveen Sarkar Uttam Kumar Nagpure Naresh Sahebrao Mishra Rahsya Mani Kumar Ravindra Awasthi Abhishek Pandey Brijesh Kumar |
| author_sort | Agnihotri Praveen |
| collection | DOAJ |
| description | The silurid butter catfish, Ompok bimaculatus (Bloch, 1794), is widely distributed in the plains and sub-mountain regions of India, but not enough is known about its reproductive potential is still insufficient. The present study evaluated the comparative reproductive potential (in terms of sex ratio, spawning season, body size at first gonadal maturity, gonadosomatic index, fecundity, egg dimension, egg weight etc.) of fish (n=1223) from six tropical tributaries of the Ganges basin during January 2011-December 2013. The females had relatively greater weight and length. The body size at 50% first gonadal maturity (L50%) ranged between 228-262mm in females and 198-247mm in males. The population has high and low fecundities. The correlations between absolute fecundity and total length, as well as between body weight and gonad weight, were significant (p<0.05) and positive in all the population. |
| first_indexed | 2024-12-22T15:36:24Z |
| format | Article |
| id | doaj.art-08e745d3f62548dab2893d6299b8d4e1 |
| institution | Directory Open Access Journal |
| issn | 1659-4266 1659-441X |
| language | English |
| last_indexed | 2024-12-22T15:36:24Z |
| publishDate | 2017-03-01 |
| publisher | Universidad Estatal a Distancia (UNED) |
| record_format | Article |
| series | Cuadernos de investigación UNED |
| spelling | doaj.art-08e745d3f62548dab2893d6299b8d4e12022-12-21T18:21:15ZengUniversidad Estatal a Distancia (UNED)Cuadernos de investigación UNED1659-42661659-441X2017-03-019110.22458/urj.v9i1.1681Dynamics of reproductive ecology of the fish Ompok bimaculatus (Siluriformes: Siluridae) in six tropical rivers of the Ganges basin, IndiaAgnihotri PraveenSarkar Uttam KumarNagpure Naresh SahebraoMishra Rahsya ManiKumar RavindraAwasthi AbhishekPandey Brijesh KumarThe silurid butter catfish, Ompok bimaculatus (Bloch, 1794), is widely distributed in the plains and sub-mountain regions of India, but not enough is known about its reproductive potential is still insufficient. The present study evaluated the comparative reproductive potential (in terms of sex ratio, spawning season, body size at first gonadal maturity, gonadosomatic index, fecundity, egg dimension, egg weight etc.) of fish (n=1223) from six tropical tributaries of the Ganges basin during January 2011-December 2013. The females had relatively greater weight and length. The body size at 50% first gonadal maturity (L50%) ranged between 228-262mm in females and 198-247mm in males. The population has high and low fecundities. The correlations between absolute fecundity and total length, as well as between body weight and gonad weight, were significant (p<0.05) and positive in all the population.https://revistas.uned.ac.cr/index.php/cuadernos/article/view/1681Ganges basinbody size at first gonadal maturityOmpok bimaculatusreproductive potentialsex ratiospawning season |
| spellingShingle | Agnihotri Praveen Sarkar Uttam Kumar Nagpure Naresh Sahebrao Mishra Rahsya Mani Kumar Ravindra Awasthi Abhishek Pandey Brijesh Kumar Dynamics of reproductive ecology of the fish Ompok bimaculatus (Siluriformes: Siluridae) in six tropical rivers of the Ganges basin, India Cuadernos de investigación UNED Ganges basin body size at first gonadal maturity Ompok bimaculatus reproductive potential sex ratio spawning season |
| title | Dynamics of reproductive ecology of the fish Ompok bimaculatus (Siluriformes: Siluridae) in six tropical rivers of the Ganges basin, India |
| title_full | Dynamics of reproductive ecology of the fish Ompok bimaculatus (Siluriformes: Siluridae) in six tropical rivers of the Ganges basin, India |
| title_fullStr | Dynamics of reproductive ecology of the fish Ompok bimaculatus (Siluriformes: Siluridae) in six tropical rivers of the Ganges basin, India |
| title_full_unstemmed | Dynamics of reproductive ecology of the fish Ompok bimaculatus (Siluriformes: Siluridae) in six tropical rivers of the Ganges basin, India |
| title_short | Dynamics of reproductive ecology of the fish Ompok bimaculatus (Siluriformes: Siluridae) in six tropical rivers of the Ganges basin, India |
| title_sort | dynamics of reproductive ecology of the fish ompok bimaculatus siluriformes siluridae in six tropical rivers of the ganges basin india |
| topic | Ganges basin body size at first gonadal maturity Ompok bimaculatus reproductive potential sex ratio spawning season |
| url | https://revistas.uned.ac.cr/index.php/cuadernos/article/view/1681 |
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