Preliminary observation on the sustainability of white sardine, Escualosa thoracata (Valenciennes, 1847), exploited from the central west coast of India
Abstract Background The present study assessed the growth and mortality parameters of the white sardine, Escualosa thoracata which is having high local demand. The white sardine gained importance due to its taste, and high demand in domestic markets as compared to the oil sardine necessitated a stud...
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| Format: | Article |
| Language: | English |
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SpringerOpen
2021-05-01
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| Series: | Journal of Basic and Applied Zoology |
| Subjects: | |
| Online Access: | https://doi.org/10.1186/s41936-021-00219-w |
| _version_ | 1819298484462813184 |
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| author | Udai R. Gurjar Suman Takar Milind S. Sawant Ravindra A. Pawar Vivek H. Nirmale Anil S. Pawase Sushanta K. Chakraborty Karan K. Ramteke Tarachand Kumawat |
| author_facet | Udai R. Gurjar Suman Takar Milind S. Sawant Ravindra A. Pawar Vivek H. Nirmale Anil S. Pawase Sushanta K. Chakraborty Karan K. Ramteke Tarachand Kumawat |
| author_sort | Udai R. Gurjar |
| collection | DOAJ |
| description | Abstract Background The present study assessed the growth and mortality parameters of the white sardine, Escualosa thoracata which is having high local demand. The white sardine gained importance due to its taste, and high demand in domestic markets as compared to the oil sardine necessitated a study on this resource to know the present status of exploitation level along the central west coast of India. Results A total of 3026 individuals of different size groups of E. thoracata were randomly collected from the Burondi fish landing center of the Ratnagiri district of Maharashtra. The asymptotic length (L ∞) and growth coefficient (K) were estimated to be 115 mm and 1.9 year−1, respectively, by ELEFAN-I and 135 mm and 1.2 year−1 by the scattergram. The value of t 0 by von Bertalanffy plot was estimated to be −0.000012 year. The fish attained a length of 65 mm, 94 mm, and 114 mm at the end of 0.5, 1, and 1.5 years of its life, respectively. The instantaneous rate of total mortality (Z), natural mortality (M), and fishing mortality (F) were estimated to be 8.07 year−1, 2.55 year−1, and 5.52 year−1, respectively. The exploitation rate (U) was calculated as 0.65, and the exploitation ratio (E) was 0.68. Conclusion The growth, mortality, and other population parameters observed in the present study will help to understand the current stock status, which is pointing toward the over-fishing condition (E ˃ 0.50) of the white sardine in the study area. Therefore, the present investigation suggests reducing the fishing pressure on E. thoracata along the central west coast of India for the sustainability of the resource. |
| first_indexed | 2024-12-24T05:30:38Z |
| format | Article |
| id | doaj.art-90c35528383d42a19bb4c457874a08c3 |
| institution | Directory Open Access Journal |
| issn | 2090-990X |
| language | English |
| last_indexed | 2024-12-24T05:30:38Z |
| publishDate | 2021-05-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Journal of Basic and Applied Zoology |
| spelling | doaj.art-90c35528383d42a19bb4c457874a08c32022-12-21T17:13:11ZengSpringerOpenJournal of Basic and Applied Zoology2090-990X2021-05-018211710.1186/s41936-021-00219-wPreliminary observation on the sustainability of white sardine, Escualosa thoracata (Valenciennes, 1847), exploited from the central west coast of IndiaUdai R. Gurjar0Suman Takar1Milind S. Sawant2Ravindra A. Pawar3Vivek H. Nirmale4Anil S. Pawase5Sushanta K. Chakraborty6Karan K. Ramteke7Tarachand Kumawat8ICAR-Central Institute of Fisheries EducationICAR-Central Institute of Fisheries EducationCollege of Fisheries, ShirgaonCollege of Fisheries, ShirgaonCollege of Fisheries, ShirgaonCollege of Fisheries, ShirgaonICAR-Central Institute of Fisheries EducationICAR-Central Institute of Fisheries EducationICAR-Central Institute of Fisheries EducationAbstract Background The present study assessed the growth and mortality parameters of the white sardine, Escualosa thoracata which is having high local demand. The white sardine gained importance due to its taste, and high demand in domestic markets as compared to the oil sardine necessitated a study on this resource to know the present status of exploitation level along the central west coast of India. Results A total of 3026 individuals of different size groups of E. thoracata were randomly collected from the Burondi fish landing center of the Ratnagiri district of Maharashtra. The asymptotic length (L ∞) and growth coefficient (K) were estimated to be 115 mm and 1.9 year−1, respectively, by ELEFAN-I and 135 mm and 1.2 year−1 by the scattergram. The value of t 0 by von Bertalanffy plot was estimated to be −0.000012 year. The fish attained a length of 65 mm, 94 mm, and 114 mm at the end of 0.5, 1, and 1.5 years of its life, respectively. The instantaneous rate of total mortality (Z), natural mortality (M), and fishing mortality (F) were estimated to be 8.07 year−1, 2.55 year−1, and 5.52 year−1, respectively. The exploitation rate (U) was calculated as 0.65, and the exploitation ratio (E) was 0.68. Conclusion The growth, mortality, and other population parameters observed in the present study will help to understand the current stock status, which is pointing toward the over-fishing condition (E ˃ 0.50) of the white sardine in the study area. Therefore, the present investigation suggests reducing the fishing pressure on E. thoracata along the central west coast of India for the sustainability of the resource.https://doi.org/10.1186/s41936-021-00219-wExploitationGrowthLength-frequencyMortalityWhite sardine |
| spellingShingle | Udai R. Gurjar Suman Takar Milind S. Sawant Ravindra A. Pawar Vivek H. Nirmale Anil S. Pawase Sushanta K. Chakraborty Karan K. Ramteke Tarachand Kumawat Preliminary observation on the sustainability of white sardine, Escualosa thoracata (Valenciennes, 1847), exploited from the central west coast of India Journal of Basic and Applied Zoology Exploitation Growth Length-frequency Mortality White sardine |
| title | Preliminary observation on the sustainability of white sardine, Escualosa thoracata (Valenciennes, 1847), exploited from the central west coast of India |
| title_full | Preliminary observation on the sustainability of white sardine, Escualosa thoracata (Valenciennes, 1847), exploited from the central west coast of India |
| title_fullStr | Preliminary observation on the sustainability of white sardine, Escualosa thoracata (Valenciennes, 1847), exploited from the central west coast of India |
| title_full_unstemmed | Preliminary observation on the sustainability of white sardine, Escualosa thoracata (Valenciennes, 1847), exploited from the central west coast of India |
| title_short | Preliminary observation on the sustainability of white sardine, Escualosa thoracata (Valenciennes, 1847), exploited from the central west coast of India |
| title_sort | preliminary observation on the sustainability of white sardine escualosa thoracata valenciennes 1847 exploited from the central west coast of india |
| topic | Exploitation Growth Length-frequency Mortality White sardine |
| url | https://doi.org/10.1186/s41936-021-00219-w |
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