IJAIR NAAS Score : 3.99 ,ISSN : 2319-1473
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Age and Growth of Spotted Snakehead Channa Punctata (Bloch, 1793) of Kajla Beel in North East Bangladesh
- Lailun Nahar; Md. Mozammel Hoque; Dr. Mst. Kaniz Fatema; Dr. Zoarder Faruque Ahmed
- Present study described age and growth of spotted snakehead, Channa punctata (Bloch, 1793) locally known as taki belongs to the family Channidae. A total of 1200 fish were collected from kajla beel at Mohongonj. Therefore, age and growth pattern of C. punctata was established by direct fit of length frequency data both to standard and modified von Bertalanffy growth models with ELEFAN I procedure. Powell-Wetherall procedure gave an initial asymptotic standard length (SL∞) for male and female were 208.43 mm and 173.52 mm and Z/K value were 2.39 and 1.52 respectively. Based on direct fitting of growth equation by ELEFAN I method, the asymptotic standard length (SL∞) of male was 217.88 mm and growth coefficient (K) was 1.10 per year. The asymptotic standard length (SL∞) of female was 186.60 mm and growth coefficient (K) was 1.35 per year. The relationships of the pooled data of standard length and body weight for male was BW = 0.00003 SL2.94 and for female BW = 0.00003 SL2.97. The von Bertalanffy growth curves were fitted to weight- at-age data and the equation for male was BWt = 220.65 [1- exp {-1.10 (t + 0.01)}]3 and for female was BWt = 164.25 [1- exp {-1.35 (t + 0.004)}]3. Male grew faster than female in all stages of life cycle. The value of coefficient of determination (R2) for male and female were 0.997 and 0.971 respectively which indicated high degree fit to the model in both cases
- Select Volume / Issue:
- Year:
- 2017
- Type of Publication:
- Article
- Keywords:
- Population; Spotted Snakehead; Growth; Standard Length and Body Weight
- Journal:
- IJAIR
- Volume:
- 6
- Number:
- 2
- Pages:
- 289-292
- Month:
- September
- ISSN:
- 2319-1473
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