Abstract

Ruditapes philippinarum is an important marine bivalve species. In this study, we conducted the RNA-seq of four different shell color strains of the R. philippinarum and investigated the analysis of the differential expression patterns of specific genes associated with pigmentation. The maximum different genes was 13 between WZ vs O, WZ vs W and WZ vs O have same numbers of different genes, was 5, Z vs W has 4 genes of 18 DEGs, W vs O just have two DEGs, while there is no DEGs between WZ vs Z. The synthesis of melanin plays important roles in the pigmentation of the shell and is closely related to the formation of the surface pattern. We speculate the possible involvement of porphyrin and chlorophyll metabolism combined with calcium signaling pathway in shell color determination. This study sheds light on the pigmentation and coloration mechanism of the Manila clam.

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