Evolutionary aspects of gobioid fishes based upon a phylogenetic analysis of mitochondrial cytochrome b genes

Akihito, Akihisa Iwata, Takanori Kobayashi, Kazuho Ikeo, Tadashi Imanishi, Hiroaki Ono, Yumi Umehara, Chika Hamamatsu, Kayo Sugiyama, Yuji Ikeda, Katsuichi Sakamoto, Akishinonomiya Fumihito, Susumu Ohno, Takashi Gojobori*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

113 Scopus citations

Abstract

The Gobioidei is a large suborder in the order Perciformes and consists of more than 2000 species belonging to about 270 genera. The vast number of species and their morphological specialization adapted to diverse habits and habitats makes the classification of the gobioid fishes very difficult. A comprehensive estimation of the evolutionary scenario of all gobioid fishes using only morphological information is difficult for two major reasons: first, in addition to wide ecological diversification, there is a trend towards specialization and degeneration of morphological characters among these species; second, an appropriate outgroup of gobioid fishes has not been recognized. Based upon nucleotide sequence comparisons of gobioid mitochondrial cytochrome b genes, we established the phylogenetic relationships of their differentiation into many groups of morphological and ecological diversity. The phylogenetic trees obtained show that most species examined have diverged from each other almost simultaneously or during an extremely short period of time.

Original languageEnglish (US)
Pages (from-to)5-15
Number of pages11
JournalGene
Volume259
Issue number1-2
DOIs
StatePublished - Dec 23 2000

Keywords

  • Evolution
  • Gobioid fishes
  • Mitochondrial cytochrome b
  • Phylogeny

ASJC Scopus subject areas

  • Genetics

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