Sibling species of mutualistic Symbiodinium clade G from bioeroding sponges in the western Pacific and western Atlantic oceans

Ramsby, Blake D., Hill, Malcolm S., Thornhill, Daniel J., Steenhuizen, Sieuwkje F., Achlatis, Michelle, Lewis, Allison M., and LaJeunesse, Todd C. (2017) Sibling species of mutualistic Symbiodinium clade G from bioeroding sponges in the western Pacific and western Atlantic oceans. Journal of Phycology, 53 (5). pp. 951-960.

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Abstract

Dinoflagellates in the genus Symbiodinium associate with a broad array of metazoan and protistian hosts. Symbiodinium-based symbioses involving bioeroding sponge hosts have received less attention than those involving popular scleractinian hosts. Certain species of common Cliona harbor high densities of an ecologically restricted group of Symbiodinium, referred to as Clade G. Clade G Symbiodinium are also known to form stable and functionally important associations with Foraminifera and black corals (Antipatharia) Analyses of genetic evidence indicate that Clade G likely comprises several distinct species. Here, we use nucleotide sequence data in combination with ecological and geographic attributes to formally describe Symbiodinium endoclionum sp. nov. obtained from the Pacific boring sponge Cliona orientalis and Symbiodinium spongiolum sp. nov. from the congeneric western Atlantic sponge Cliona varians. These species appear to be part of an adaptive radiation comprising lineages of Clade G specialized to the metazoan phyla Porifera and Cnidaria, which began prior to the separation of the Pacific and Atlantic Oceans.

Item ID: 54151
Item Type: Article (Research - C1)
ISSN: 1529-8817
Keywords: Atlantic Ocean, Cliona, Pacific Ocean, Porifera, Symbiodinium, systematics
Funders: National Science Foundation (NSF), USA, Pennsylvania State University, AIMS@JCU
Projects and Grants: NSF IOS-1258058, NSF OCE-1636022, NSF OCE-1617255
Date Deposited: 19 Jun 2018 01:40
FoR Codes: 06 BIOLOGICAL SCIENCES > 0602 Ecology > 060205 Marine and Estuarine Ecology (incl Marine Ichthyology) @ 100%
SEO Codes: 96 ENVIRONMENT > 9608 Flora, Fauna and Biodiversity > 960808 Marine Flora, Fauna and Biodiversity @ 100%
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