Phylogeographic studies in the tropical seaweed Cladophoropsis membranacea (Chlorophyta, Ulvophyceae) reveal a cryptic species complex

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Abstract

The seaweed Cladophoropsis membranacea (Hofman Bang ex. C. Agardh) Borgesen is a widely distributed species on coral reefs and along rocky coastlines throughout the tropics and subtropics. In a recent population-level survey openface >1600 individuals with eight microsatellite loci, a number of isolates from biogeographically disjunct locations could not be amplified for any of the loci. Nonamplifiable and amplifiable isolates co-occurred within the Canary Islands, Cape Verde Islands, and in the Caribbean. These unexpected results led to question whether or not C. membranacea is a single species. Phylogenetic relationships were evaluated using rDNA ITS1 and ITS2 sequence comparisons from 42 isolates sampled from a subset of 30 of the 66 locations. Four well-supported clades were identified. Sequence divergence within clades was

Original languageEnglish
Pages (from-to)572-582
Number of pages11
JournalJournal of Phycology
Volume38
Issue number3
DOIs
Publication statusPublished - Jun-2002

Keywords

  • algae
  • Chlorophyta
  • Cladophoropsis membranacea
  • cryptic species
  • ITS
  • microsatellites
  • phylogeography
  • seaweeds
  • Ulvophyceae
  • ACROSIPHONIA-ARCTA CHLOROPHYTA
  • GENETIC-VARIABILITY
  • TEMPERATURE RESPONSES
  • MICROSATELLITE LOCI
  • NUCLEAR RDNA
  • RHODOPHYTA
  • DIFFERENTIATION
  • DISPERSAL
  • PHAEOPHYCEAE
  • BIOGEOGRAPHY

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