Australian sponge barnacles: diversity, host dynamics and systematics
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This study applied molecular phylogenetic tools to examine the evolutionary history of barnacles symbiotic with sponges. The transition from free-living to sponge-symbiosis has evolved independently at least three times within this group. The evolution of sponge symbiosis resulted in significant adaptive radiation, and over 100 species were identified, including >50 new species, from Australian waters. Host use was typically restricted to a few species and phylogenetically conserved.
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