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| Analysis on Influence of Morphological Traits on Body Weight of Snail Bellamya aeruginosa |
| YU Ming1, TENG Jian1, ZHANG Chong1, ZHAO Yan1, LI Xian2, JI Xiangshan1, CHEN Hongjiu1 |
1. College of Animal Science and Technology, Shandong Agricultural University, Taian 271018, China;
2. Shangdong Freshwater Fisheries Research Institute, Jinan 250117, China |
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Abstract In order to explore the correlationship between the main morphological characters and the main factors affecting body weight in wild snail Bellamya aeruginosa, shell height, shell width, shell thickness, aperture length, aperture width and body weight were measured in the samples of the snail collected from different populations, including Weishan Lake, Dongping Lake, Luoma Lake, Hongze Lake, Jiangdu Changjiang River and Yunnan Dianchi Lake. The optimal multiple regression equation was established by the correlation and path analysis methods. The results showed that there were highly correlated between the shell height, shell width, aperture width and aperture length with body weight, without significant correlation between shell thickness and body weight. The sum of the coefficients of determination Σ di was 0.916, 0.927, 0.794, 0.886, 0.810 and 0.783 in the six populations, respectively, indicating that most of the traits affecting body weight were analyzed. In six different populations, the main factor influencing body weight of the snail was different, shell height or shell width being the greater factors affecting on body weight, which is the main influencing factor of body weight of Bellamya aeruginosa. By multiple regression analysis of variance and significance test of partial regression coefficient, the partial regression coefficient was very significant with P value of less than 0.01. The findings provide reference for the selection and breeding of varieties of Bellamya aeruginosa.
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Received: 02 May 2022
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