Age and growth in the Indian major carp Labeo rohita Cypriniformes: Cyprinidae from tropical rivers of Ganga basin, India
Labeo rohita is a member of the Indian major carp species and originally an inhabitant of the Ganga river network in India. It is among the top ten aquaculture species of the world. Since there is a lack of information on the growth pattern of the wild populations of this species, this study aimed a...
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Vicerractoría Investigación
2013-12-01
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| Series: | Revista de Biología Tropical |
| Subjects: | |
| Online Access: | http://www.scielo.sa.cr/scielo.php?script=sci_arttext&pid=S0034-77442013000500030&lng=en&tlng=en |
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| author | Javaid Iqbal Mir Uttam Kumar Sarkar Om Prakash Gusain Arvind Kumar Dwivedi Joukrushna Jena |
| author_facet | Javaid Iqbal Mir Uttam Kumar Sarkar Om Prakash Gusain Arvind Kumar Dwivedi Joukrushna Jena |
| author_sort | Javaid Iqbal Mir |
| collection | DOAJ |
| description | Labeo rohita is a member of the Indian major carp species and originally an inhabitant of the Ganga river network in India. It is among the top ten aquaculture species of the world. Since there is a lack of information on the growth pattern of the wild populations of this species, this study aimed at evaluating the pattern of age and growth, to support the development of effective management plans. A total of 1 082 samples of L. rohita were obtained from May 2009 to July 2012 in six drainages of the Ganga basin. Scales of the fish were used to determine the age and growth by analyzing the annual rings growth. Out of six populations, a maximum 8 age classes were recorded from two rivers Betwa and Sharda. The back-calculated lengths at 8 age class ranged from 86.22cm to 91.66cm. However, for the rest of rivers up to 7 age classes were recorded. Among growth parameters, specific rate of length increase Cl and specific rate of weight increase Cw showed decreasing trend, and three distinct life stages of L. rohita were recorded based on growth constant data Clt. Analysis of variance ANOVA of the back-calculated length data set of six populations indicated a significant difference p0.05. All three populations showed significant variation in length attainment during 1 and 3 age groups, while two populations showed significant variation in length attainment during the 2 and 7 age classes. Additionally, analysis of age frequency at different length intervals indicated that with increase in age class, number of fish samples was reduced. Since the pattern of life history traits of L. rohita have not been attempted in the recent past; therefore, this study will guide fisheries biologists about the current stock structure of this fish across different spatial scale of the Ganga basin. |
| first_indexed | 2024-03-12T07:23:28Z |
| format | Article |
| id | doaj.art-a8cc2c0ae50544efa072cb8ca03ed80f |
| institution | Directory Open Access Journal |
| issn | 0034-7744 |
| language | English |
| last_indexed | 2024-03-12T07:23:28Z |
| publishDate | 2013-12-01 |
| publisher | Vicerractoría Investigación |
| record_format | Article |
| series | Revista de Biología Tropical |
| spelling | doaj.art-a8cc2c0ae50544efa072cb8ca03ed80f2023-09-02T22:14:56ZengVicerractoría InvestigaciónRevista de Biología Tropical0034-77442013-12-0161419551966S0034-77442013000500030Age and growth in the Indian major carp Labeo rohita Cypriniformes: Cyprinidae from tropical rivers of Ganga basin, IndiaJavaid Iqbal Mir0Uttam Kumar Sarkar1Om Prakash Gusain2Arvind Kumar Dwivedi3Joukrushna Jena4National Bureau of Fish Genetic ResourcesNational Bureau of Fish Genetic ResourcesHemwati Nandan Bahuguna Garhwal UniversityNational Bureau of Fish Genetic ResourcesNational Bureau of Fish Genetic ResourcesLabeo rohita is a member of the Indian major carp species and originally an inhabitant of the Ganga river network in India. It is among the top ten aquaculture species of the world. Since there is a lack of information on the growth pattern of the wild populations of this species, this study aimed at evaluating the pattern of age and growth, to support the development of effective management plans. A total of 1 082 samples of L. rohita were obtained from May 2009 to July 2012 in six drainages of the Ganga basin. Scales of the fish were used to determine the age and growth by analyzing the annual rings growth. Out of six populations, a maximum 8 age classes were recorded from two rivers Betwa and Sharda. The back-calculated lengths at 8 age class ranged from 86.22cm to 91.66cm. However, for the rest of rivers up to 7 age classes were recorded. Among growth parameters, specific rate of length increase Cl and specific rate of weight increase Cw showed decreasing trend, and three distinct life stages of L. rohita were recorded based on growth constant data Clt. Analysis of variance ANOVA of the back-calculated length data set of six populations indicated a significant difference p0.05. All three populations showed significant variation in length attainment during 1 and 3 age groups, while two populations showed significant variation in length attainment during the 2 and 7 age classes. Additionally, analysis of age frequency at different length intervals indicated that with increase in age class, number of fish samples was reduced. Since the pattern of life history traits of L. rohita have not been attempted in the recent past; therefore, this study will guide fisheries biologists about the current stock structure of this fish across different spatial scale of the Ganga basin.http://www.scielo.sa.cr/scielo.php?script=sci_arttext&pid=S0034-77442013000500030&lng=en&tlng=enLabeo rohitaretrocálculospoblaciones silvestrescuenca del GangesIndia |
| spellingShingle | Javaid Iqbal Mir Uttam Kumar Sarkar Om Prakash Gusain Arvind Kumar Dwivedi Joukrushna Jena Age and growth in the Indian major carp Labeo rohita Cypriniformes: Cyprinidae from tropical rivers of Ganga basin, India Revista de Biología Tropical Labeo rohita retrocálculos poblaciones silvestres cuenca del Ganges India |
| title | Age and growth in the Indian major carp Labeo rohita Cypriniformes: Cyprinidae from tropical rivers of Ganga basin, India |
| title_full | Age and growth in the Indian major carp Labeo rohita Cypriniformes: Cyprinidae from tropical rivers of Ganga basin, India |
| title_fullStr | Age and growth in the Indian major carp Labeo rohita Cypriniformes: Cyprinidae from tropical rivers of Ganga basin, India |
| title_full_unstemmed | Age and growth in the Indian major carp Labeo rohita Cypriniformes: Cyprinidae from tropical rivers of Ganga basin, India |
| title_short | Age and growth in the Indian major carp Labeo rohita Cypriniformes: Cyprinidae from tropical rivers of Ganga basin, India |
| title_sort | age and growth in the indian major carp labeo rohita cypriniformes cyprinidae from tropical rivers of ganga basin india |
| topic | Labeo rohita retrocálculos poblaciones silvestres cuenca del Ganges India |
| url | http://www.scielo.sa.cr/scielo.php?script=sci_arttext&pid=S0034-77442013000500030&lng=en&tlng=en |
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