Interrelationship between some morphometric parameters and bodyweight of tank-based cultured African catfish(Clarias gariepinus Burchell,1822)  

作　　者：Ikenna Onyekwelu Chinenye Chukwuemeka Anyadike Nelson Ike Ossai Oji Achuka Nwoke Emeka Leonard Ndulue 

机构地区：[1]Department of Agricultural and Bioresources Engineering,University of Nigeria,Nsukka,410001,Enugu State,Nigeria [2]Department of Zoology and Environmental Biology,University of Nigeria,Nsukka,410001,Enugu State,Nigeria

出　　处：《Aquaculture and Fisheries》2021年第6期628-633,共6页渔业学报（英文）

摘　　要：Morphometrics and fish bodyweight studies have shown great importance in estimation of productivity and stock assessment for some fish species. Herein, the aim of this study was to identify the morphometric parameter(s) that has most direct correlation with bodyweight of African catfish (Clarias gariepinus). The experimental layouts were four groups of experimental units, each group was replicated twice. Morphometric parameters considered in this study were total length, standard length, head length, head width and snout length. Data collected were processed and subjected to analysis of variance (ANOVA) and correlation analyses at 5% significant level. Results revealed significantly high correlations between bodyweight and morphometric parameters, with values ranging from 0.834 to 0.977 (upper and lower limits for total and snout lengths respectively). The results further revealed that relationship between bodyweight and morphometric parameters followed third-degree polynomial, with R2 ranging from 0.700 to 0.969 (upper and lower limits for total and snout lengths respectively). Significant high correlations (>0.85) exist between morphometric parameters selected for this study. In conclusion, in sampling programs of African catfish where the aim is to select fishes with high bodyweights, emphasis should be given to fishes with highest total length.

关 键 词：Clarias gariepinus BODYWEIGHT MORPHOMETRICS Total length PARAMETERS 

分 类 号：S965.128[农业科学—水产养殖]