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Some biological aspects of the spotted snakehead Channa punctata (Bloch, 1793) in the wetland ecosystem, Gajner Beel, North-western Bangladesh.

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Title Some biological aspects of the spotted snakehead Channa punctata (Bloch, 1793) in the wetland ecosystem, Gajner Beel, North-western Bangladesh.
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Creator Chowdhury AA, Hossain MY, Mawa Z, Khatun D, Islam MA, Rahman MA, Hasan MR, Rahman O, Konok RH, Rahman MA and Parvin MF
 
Subject hanna punctata, Condition factor, Gajner Beel, Natural mortality, Size at rst sexual maturity, Wetland
 
Description Not Available
Documenting and updating life history traits of wild fish are prerequisite for undertaking any conservation and enhancement programme from inland waters. The spotted snakehead Channa punctata (Bloch, 1793) is an important small indigenous food fish in Asian countries which has high nutritional and commercial value. This is the first work on describing life-history traits including growth pattern, condition factors (Fulton's, K F ; Allometric, K A ; Relative condition, K R ; Relative weight, W R), form factor (a 3.0), size at first sexual maturity (L m) and natural mortality (M w) in the Gajner Beel, northwestern Bangladesh during July 2018 to December 2019. Traditional fishing gears were used for sampling. Different lengths (i.e., total length, TL; standard length, SL) and body weight (BW) of each individual were taken using digital slide calipers and an electronic balance to the nearest 0.01 cm and 0.01 g, respectively. In total, 583 individuals ranging from 5.8-22.8 cm TL and 1.96-115.08 g BW were collected in this study. On the basis of b value, the growth pattern of C. punctata was isometric (b=3.0) in all the LWRs. Also, all LWRs were highly significant with r 2 values ≥0.979. The LLR was highly significant (p
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Date 2022-06-24T05:03:05Z
2022-06-24T05:03:05Z
2021-01-01
 
Type Research Paper
 
Identifier Not Available
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http://krishi.icar.gov.in/jspui/handle/123456789/73350
 
Language English
 
Relation Not Available;
 
Publisher Not Available