Estimation of Biometric Indices for Snakehead Channa punctata (Bloch, 1793) through Multi-model Inferences

Jordan Journal of Biological Sciences

Md. Alomgir Hossen¹ 

关键词: Channa punctata;    Conditions;    Form factor;    Natural mortality;    Rupsha River.;   

DOI  :  

学科分类：生物科学（综合）

来源: Hashemite University, Deanship of Research and Higher Studies

【 摘 要 】

The present study describes the biometric indices of Channa punctata including- length frequency distributions (LFDs), length-weight relationships (LWRs), length-length relationships (LLRs), condition factors (allometric, KA, Fulton’s, KF, relative, KR and relative weight, WR), form factor (a3.0), and natural mortality (MW) using multi-model indices from the Rupsha River in southern Bangladesh. For each individual, the total length (TL) and body weight (BW) were measured by digital slide calipers and an electric balance, respectively. The LFDs showed that the 13.0-14.0 cm TL size group was numerically dominant. The b values of LWRs (TL vs. BW) indicates positive allometric growth, (b = 3.10) and KF is the best for assessing the well-being of this species in the Rupsha River. The WR indicates that the habitat was imbalanced with higher predators. The a3.0 and MW were 0.0116 and 1.00 year-1 for C. punctata in the Rupsha River, respectively. In addition, the present study calculates the a3.0 and MW from world-wide different water bodies using the available literature. These results would be effective for further stock assessment and for the management of C. punctata in the Rupsha River and the surrounding ecosystems.

【 授权许可】

CC BY