Phylogeographical history of the sponge Crambe crambe (Porifera, Poecilosclerida): range expansion and recent invasion of the Macaronesian islands from the Mediterranean Sea.

Abstract excerpt

We studied sequence variation in the nuclear ribosomal internal transcribed spacers (ITS-1 and ITS-2) in 111 individuals from 11 populations/localities of the sponge Crambe crambe across the core species range in the western Mediterranean Sea and Atlantic Ocean. We report the first confirmed instance of intragenomic variation in sponges. Phylogeographical, nested clade and population genetic analyses were used to...

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