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| Effects of Morphological Traits on Weight Traits of Venus Clam Meretrix meretrix in Different Geographical Populations |
| JING Yuanyuan1,2,3, GUO Shaojing4, SUN Ming1,2,3, ZHANG Tianwen1,2,3, LIU Guangbin1,2,3, LU Ligong5, HU Fanguang1,2,3 |
1. Marine Science Research Institute of Shandong Province, Qingdao 266104, China;
2. Key Laboratory of Mariculture & Enhancement in Shallow Sea Area, Qingdao, Qingdao 266104, China;
3. Shandong Provincial Engineering Technology Research Center for Healthy Breeding in Seawater, Qingdao 266104, China;
4. Shandong Provincial Public Resource Trading Center, Jinan 250014, China;
5. Changyi Yuhai Aquaculture Company Limited, Weifang 261312, China |
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Abstract The morphological traits (shell length, shell height, shell width, escutcheon length, and escutcheon width) and body mass traits (live weight) were measure in venus clam Meretrix meretrix sampled from Hekou (HK), Laizhou (LZ), and Donggang (DG) in Shandong province, Rudong (RD) in Jiangsu province, Putuo (PT) and Yueqing (YQ) in Zhejiang province from March to April 2021. The effects of morphological traits on live mass in each population were analyzed using path analysis and multiple regression analysis. The results showed that the venus clam had the trait with the maximal coefficient of variation (16.64%—45.90%) on living body weight in each population, with highly significant correlation (P<0.01) between various traits in different populations. There was the maximal impact of shell height on the living body weight in Hekou (0.946), Laizhou (0.971), and Rudong (0.966) populations, with the maximal direct effect of shell width on the living body weight (0.987) in Donggang (0.987) and Putuo (0.961) populations, and the maximal impact on the living body weight of Yueqing (0.931) population. The determination coefficient of morphological traits on body mass traits was basically consistent with the results of path analysis, indicating that the main morphological traits affecting the living body weight were different in different populations of venus clam. The optimal regression equations was established for the morphological traits of each population of venus clam on the quality of live organisms by stepwise regression method. The findings provide scientific reference for the selection of parent venus clam in seedling breeding.
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Received: 24 August 2024
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