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PHYLOGENETIC RELATIONSHIPS OF CLAWED LOBSTER GENERA (DECAPODA: NEPHROPIDAE) BASED ON MITOCHONDRIAL 16S rRNA GENE SEQUENCES

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ABSTRACT Approximately 350 base pairs (bp) of the mitochondrial 16S rRNA gene were used to study the phylogenetic relationships among 5 genera of the clawed lobster family Nephropidae (infraorder Astacidea), including Homarus, Homarinus, Metanephrops, Nephrops, and Nephropsis. Maximumparsimony analysis, using a hermit crab, Pagurus pollicaris (infraorder Anomura), as an outgroup, produced a tree topology in which Homarus and Nephrops formed a well-supported clade that excluded Homarinus. The same tree topology was obtained from both neighbor-joining and maximumlikelihood analyses. Some morphological characters that appear synapomorphic for Nephrops and Metanephrops may be due to convergence rather than symplesiomorphy. The current taxonomy, therefore, does not reflect the phylogeny of this group as suggested by the molecular data. More molecular data and studies using homologous morphological characters are needed to reach a better understanding of the phylogenetic history of clawed lobsters.

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/content/journals/10.1163/193724098x00142
1998-01-01
2016-12-08

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