Genetic relationships among thirteen species of dragonets (Gobiesociformes : Callionymidae) inferred from allozyme markers

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In order to test an alternative hypothesis on the relationships of some callionymids, we examined the genetic relationships of 13 species of five common genera (Bathycallionymus, Calliurichthys, Foetorepus, Repomucenus, and Paradiplogrammus) of dragonets, using horizontal starch gel electrophoresis method. The locus PROT* showed species-specific allozyme markers for the six Repomucenus species tested. Diagnostic marker loci for the congeners Foetorepus altivelis and F. masudai were G3PDH*, LDH-B*, LDH-A*, and SOD*. The D value was lowest between B. formosanus and B. kaianus (D=0.002). Results of the dendrogram generally agreed with the present taxonomical criteria, but with partial conflict on the positions of C. japonicus, R. lunatus, and R. planus. Although our dendrogram agree with the phylogenetic relationships of dragonets (estimated on the basis of comparative osteology) on the clustering of the genera Calliurichthys and Repomucenus, it disagrees on the positions of the genera Bathycallionymus, Foetorepus, and Paradiplogrammus. Our data suggest that the species status of B. kaianus and B. formosanus be reinvestigated, and the generic status of C. japonicus should be reconsidered from the taxonomical and systematical view points.
高知大学海洋生物教育研究センターの論文
1997-12-31