International Journal of Aquaculture, 2025, Vol.15, No.3, 99-115 http://www.aquapublisher.com/index.php/ija 111 free radical production, and the ND gene product improving the stability of electron transfer under hypoxic conditions. Molecular evidence of this type of adaptation still needs to be obtained by comparing the mitochondrial functions of snakeheads in different environments. Figure 1 Comparative analysis of the C. argus and the C. maculatagenomes (Adopted from Ou et al., 2021) Image caption: (A) KEGG enrichment analysis of the unique, expansion, and contraction gene families. The ordinate is KEGG terms, the abscissa is the number of genes in the pathway, and the colour represents the corresponding P-value. Left, enrichment result for C. argus; right, enrichment result for C. maculata, same asterisks indicate same terms. (B) There was a high collinearity between the 2 species. Chr 2 and 3 of C. argus correspond to Chr 2 of C. maculata,Chr4and5of C. argus correspond to Chr 3 of C. maculata, Chr 18 and 19 of C. argus correspond to Chr 16 of C. maculata(Adopted from Ou et al., 2021)
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