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Relationships Between Genetic Variability and Life-History Features of Fishes Based on S7 Ribosomal Protein Gene

Tangjie Zhang

To research relationship between genetic variation and life-history variables of Actinopterygii, as indicated by common length, maximum length, maximum weight and longevity, and environmental variation, as indicated by three different fishesÂ’ living environments, we applied analysis of independent regression and phylogenetically-independent contrasts methods to evaluate life-history variables correlations with rps7 neutral genetic diversity. Polymorphism datasets of rps7 gene, belonging to 48 genera, 25 families and 9 orders, of Actinopterygii, was obtained from Polymorphix and Popset of GenBank. Life-history variables were obtained from the AnAge database and fish base. The results showed that neutral genetic diversity of fishes is significantly negatively associated with common length. No strong level of correlation was found between fishÂ’s neutral genetic diversity and maximum size, maximum weigh or maximum longevity. No correlation was found among neutral genetic diversity and fishesÂ’ habits (marine, freshwater and marine-freshwater) either.