Rafting dispersal in a brooding southern sea star (Asteroidea : Anasterias)
Marine biogeographers have long speculated that macroalgal rafting presents a dispersal mechanism for brooding marine invertebrates of the Southern Ocean, but few direct observations of rafting by echinoderm taxa have been documented. Here we report rafting of the brooding benthic sea star Anasteria...
Published in: | Invertebrate Systematics |
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2018
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Online Access: | https://doi.org/10.1071/IS17037 |
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ftbioone:10.1071/IS17037 2024-06-02T07:57:43+00:00 Rafting dispersal in a brooding southern sea star (Asteroidea : Anasterias) Jonathan M. Waters Tania M. King Ceridwen I. Fraser Chris Garden Jonathan M. Waters Tania M. King Ceridwen I. Fraser Chris Garden world 2018-03-22 text/HTML https://doi.org/10.1071/IS17037 en eng CSIRO Publishing doi:10.1071/IS17037 All rights reserved. https://doi.org/10.1071/IS17037 Text 2018 ftbioone https://doi.org/10.1071/IS17037 2024-05-07T00:49:46Z Marine biogeographers have long speculated that macroalgal rafting presents a dispersal mechanism for brooding marine invertebrates of the Southern Ocean, but few direct observations of rafting by echinoderm taxa have been documented. Here we report rafting of the brooding benthic sea star Anasterias suteri, along with two mollusc taxa (Onithochiton neglectus – also a brooder – and Cantharidus roseus), on detached bull-kelp Durvillaea antarctica in Foveaux Strait, southern New Zealand. The rafting journey, intercepted at sea, likely lasted for 2–3 weeks and may have covered several hundred kilometres. We use DNA sequences, together with meteorological and prevailing oceanographic data, to infer the likely Fiordland (mainland) origins of the raft and its epifauna. This rafting dispersal mechanism provides an explanation for the broad (circum-subantarctic) but disjunct distribution of brooding Anasterias populations, and for the genetic connectivity observed between their populations. Text Antarc* Antarctica Southern Ocean BioOne Online Journals New Zealand Southern Ocean Invertebrate Systematics 32 2 253 |
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Open Polar |
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BioOne Online Journals |
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ftbioone |
language |
English |
description |
Marine biogeographers have long speculated that macroalgal rafting presents a dispersal mechanism for brooding marine invertebrates of the Southern Ocean, but few direct observations of rafting by echinoderm taxa have been documented. Here we report rafting of the brooding benthic sea star Anasterias suteri, along with two mollusc taxa (Onithochiton neglectus – also a brooder – and Cantharidus roseus), on detached bull-kelp Durvillaea antarctica in Foveaux Strait, southern New Zealand. The rafting journey, intercepted at sea, likely lasted for 2–3 weeks and may have covered several hundred kilometres. We use DNA sequences, together with meteorological and prevailing oceanographic data, to infer the likely Fiordland (mainland) origins of the raft and its epifauna. This rafting dispersal mechanism provides an explanation for the broad (circum-subantarctic) but disjunct distribution of brooding Anasterias populations, and for the genetic connectivity observed between their populations. |
author2 |
Jonathan M. Waters Tania M. King Ceridwen I. Fraser Chris Garden |
format |
Text |
author |
Jonathan M. Waters Tania M. King Ceridwen I. Fraser Chris Garden |
spellingShingle |
Jonathan M. Waters Tania M. King Ceridwen I. Fraser Chris Garden Rafting dispersal in a brooding southern sea star (Asteroidea : Anasterias) |
author_facet |
Jonathan M. Waters Tania M. King Ceridwen I. Fraser Chris Garden |
author_sort |
Jonathan M. Waters |
title |
Rafting dispersal in a brooding southern sea star (Asteroidea : Anasterias) |
title_short |
Rafting dispersal in a brooding southern sea star (Asteroidea : Anasterias) |
title_full |
Rafting dispersal in a brooding southern sea star (Asteroidea : Anasterias) |
title_fullStr |
Rafting dispersal in a brooding southern sea star (Asteroidea : Anasterias) |
title_full_unstemmed |
Rafting dispersal in a brooding southern sea star (Asteroidea : Anasterias) |
title_sort |
rafting dispersal in a brooding southern sea star (asteroidea : anasterias) |
publisher |
CSIRO Publishing |
publishDate |
2018 |
url |
https://doi.org/10.1071/IS17037 |
op_coverage |
world |
geographic |
New Zealand Southern Ocean |
geographic_facet |
New Zealand Southern Ocean |
genre |
Antarc* Antarctica Southern Ocean |
genre_facet |
Antarc* Antarctica Southern Ocean |
op_source |
https://doi.org/10.1071/IS17037 |
op_relation |
doi:10.1071/IS17037 |
op_rights |
All rights reserved. |
op_doi |
https://doi.org/10.1071/IS17037 |
container_title |
Invertebrate Systematics |
container_volume |
32 |
container_issue |
2 |
container_start_page |
253 |
_version_ |
1800740909520781312 |