Abstract
A finely pinnately branched species of Grateloupia not seen previously in New Zealand was collected in Tauranga, New Zealand, growing on a tug boat. Molecular sequencing data (rbcL) revealed it to be Grateloupia subpectinata, a species first described from Japan, and also reported as native to Korea and China, and introduced to Britain, France, and Australia. The only species of Grateloupia with morphology similar to G. subpectinata in the New Zealand region is G. prolifera from the Chatham Islands. A sequence of this species was obtained for comparative purposes and found to be distinct from G. subpectinata.
Funding for this work was provided by the Ministry for Primary Industries (MPI) through the Marine Invasives Taxonomic Service (MITS) and the Response Group. We would like to thank Kathy Walls (MPI) for advice, Serena Wilkens (MITS, NIWA) for assistance, and Jenn Dalen (Museum of New Zealand Te Papa Tongarewa) for providing herbarium registration numbers. The samples of G. subpectinata were collected during surveillance carried out by NIWA on behalf of MPI. The sample from the Chatham Islands was collected during field work in the Marine Biodiversity and Biosecurity OBI funded by the New Zealand Foundation for Research Science and Technology.
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