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| Effects of Morphological Traits onBody Mass of Paphia textile |
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| DOI：10.16768/j.issn.1004-874X.2022.07.015 |
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| Abstract: |
| 【Objective】The study was conducted to evaluate the effects of shell morphological traits on the body mass
of wild Paphia textile and provide references for artificial breeding of P. textile. 【Method】Four traits including shell
length (SL), shell height (SH), shell width (SW) and body mass (BM) of 121 P. textile randomly chosen from Beihai, Guangxi
Province were measured. The shell traits (SL, SH, SW) were used as independent variables and body (BM) was used as
dependent variable for correlation, path, determination coefficients and multiple regression analysis.【Result】The maximal
coefficient of variance is in body mass, with extremely significant differences in correlation coefficients among the four
quantitative traits of P. textile . The correlation coefficient between body mass and shell width is the maximal, with a value
of 0.882, and the minimal correlation coefficient is between shell length and shell width, with a value of 0.596. The results
of path analysis indicate that shell width has the greatest direct influence on body mass, and the path coefficient is 0.573.
The indirect influence of shell height through shell width on body mass is the greatest, and the path coefficient is 0.423. The results of degree of determination analysis are consistent with those of the path analysis results. The optimal multiple regression
equation of shell traits on body mass is established through stepwise multiple regression analysis: BM=-32.258+0.309SL+0.356
SH+1.456SW(R2
=0.874).【Conclusion】When it comes to artificial breeding of P. textile with body mass as breeding objective,
shell width should be considered first and the cooperative selection of shell height should be strengthened at the same time. |
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