First record of Bonnemaisonia hamifera (Bonnemaisoniales,Rhodophyta) in the South Pacific,from the South Island of New Zealand |
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| Authors: | David J Garbary Roberta D’Archino Brendan Flack Christopher D Hepburn Wendy A Nelson Daniel Pritchard |
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| Institution: | 1. Jack McLachlan Laboratory of Aquatic Plant Resources, Department of Biology, St. Francis Xavier University, Antigonish, Canada dgarbary@gmail.com https://orcid.org/0000-0001-5126-6608;3. National Institute of Water and Atmospheric Research, Wellington, New Zealand https://orcid.org/0000-0001-7025-3255;4. East Otago Taiāpure Management Committee, Karitāne, New Zealand;5. East Otago Taiāpure Management Committee, Karitāne, New Zealand;6. Department of Marine Science, University of Otago, Dunedin, New Zealand;7. National Institute of Water and Atmospheric Research, Wellington, New Zealand;8. School of Biological Sciences, University of Auckland, Auckland, New Zealand https://orcid.org/0000-0003-0014-5560;9. Department of Marine Science, University of Otago, Dunedin, New Zealand;10. Te Ao Tūroa, Te Rūnanga o Ngāi Tahu, Dunedin, New Zealand |
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| Abstract: | ABSTRACT The tetrasporophytic ‘Trailliella’ stage of the red algal genus Bonnemaisonia is reported for the first time from the Southern Hemisphere. Here we describe a bloom of the tetrasporophyte of B. hamifera from the mouth of the Waikouaiti River, Karitāne, South Island, where it occurred as thousands of free-floating tufts up to 1?cm wide in shallow water, accumulated in windrows on sand banks and beaches, and in the water column at depths of 10–12?m on the adjacent open coast. Gametophytic stages have not yet been found in New Zealand. The material collected to date is strictly vegetative, and reproduction occurs via fragmentation. The identity of the New Zealand samples as B. hamifera was confirmed by both morphology and rbcL sequencing. The abundance and floating dispersal of B. hamifera suggests that it is invasive and will become widely distributed in New Zealand. |
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| Keywords: | Bonnemaisoniales introductions invasive life histories South Island tetrasporophytes |
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https://orcid.org/0000-0001-5126-6608;3. National Institute of Water and Atmospheric Research, Wellington, New Zealand