Ecological and morphological patterns in communities of land snails of the genus Mandarins from the Bonin Islands

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74 Citations (Scopus)

Abstract

The land snail genus Mandarina has undergone extensive radiation within the Bonin Islands in the west Pacific. The preferred above-ground vegetation heights of sympatric species were clearly different. They separated into arboreal, semi-arboreal, exposed ground and sheltered ground ecotypes. Shells of species with different ecotypes differ markedly, but shells of species with the same ecotype are very similar to each other. Shell morphologies of some phylogenetically distantly related species with the same ecotype were indistinguishable. Character evolution estimated parsimoniously using a phylogenetic tree suggests that the speciation among sympatric species is accompanied by ecological and morphological diversification. In addition, species coexistence of Mandarina is related to niche differentiation. The above findings suggest that ecological interactions among species contribute to the ecological and morphological diversification and radiation of these land snails in this depauperate environment.

Original languageEnglish
Pages (from-to)131-143
Number of pages13
JournalJournal of Evolutionary Biology
Volume17
Issue number1
DOIs
Publication statusPublished - 2004 Jan 1

Keywords

  • Adaptive radiation
  • Bonin Islands
  • Habitat segregation
  • Island biology
  • Land snails
  • Mandarina
  • Morphology

ASJC Scopus subject areas

  • Ecology, Evolution, Behavior and Systematics

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