Novel combination coccospheres from Helicosphaera spp indicate complex relationships between species
Novel combination coccospheres from Helicosphaera spp indicate complex relationships between species
Coccolithophores play an important role in global biogeochemical cycling, but many aspects of their ecology remain poorly understood, including their heteromorphic haplo-diplontic life cycle. The presence of combination coccospheres in environmental samples, which represent a transition between the lightly calcified haploid (HOL) and heavily calcified diploid (HET) life phases, provides crucial evidence linking the two life cycle phases of a particular species. Here, we describe combination coccospheres from the Southern Ocean that show a novel association between Helicosphaera hyalina (HET) and Helicosphaera HOL catilliferus type. The ability of Helicosphaera HET and HOL morphospecies to form multiple different combinations indicates a substantial complexity in the relationships between life cycle phases in this group. The findings suggest recent divergence within the Helicosphaera lineage may have resulted in significant inter- and intra-specific variability, with cryptic speciation in one or both life cycle phases contributing to their ability to form multiple HET/HOL associations.
838-838
Sturm, Daniela
b7d00726-3dfb-4f70-bec3-c4f3340a9b4b
Langer, Gerald
88ea3c75-ae95-4fe8-be19-b42c43d8375e
Wheeler, Glen
70608a88-45d6-4d42-968d-00e15c800fd5
17 August 2022
Sturm, Daniela
b7d00726-3dfb-4f70-bec3-c4f3340a9b4b
Langer, Gerald
88ea3c75-ae95-4fe8-be19-b42c43d8375e
Wheeler, Glen
70608a88-45d6-4d42-968d-00e15c800fd5
Sturm, Daniela, Langer, Gerald and Wheeler, Glen
(2022)
Novel combination coccospheres from Helicosphaera spp indicate complex relationships between species.
Journal of Plankton Research, 44 (6), .
(doi:10.1093/plankt/fbac044).
Abstract
Coccolithophores play an important role in global biogeochemical cycling, but many aspects of their ecology remain poorly understood, including their heteromorphic haplo-diplontic life cycle. The presence of combination coccospheres in environmental samples, which represent a transition between the lightly calcified haploid (HOL) and heavily calcified diploid (HET) life phases, provides crucial evidence linking the two life cycle phases of a particular species. Here, we describe combination coccospheres from the Southern Ocean that show a novel association between Helicosphaera hyalina (HET) and Helicosphaera HOL catilliferus type. The ability of Helicosphaera HET and HOL morphospecies to form multiple different combinations indicates a substantial complexity in the relationships between life cycle phases in this group. The findings suggest recent divergence within the Helicosphaera lineage may have resulted in significant inter- and intra-specific variability, with cryptic speciation in one or both life cycle phases contributing to their ability to form multiple HET/HOL associations.
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fbac044
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Accepted/In Press date: 28 July 2022
Published date: 17 August 2022
Identifiers
Local EPrints ID: 490447
URI: http://eprints.soton.ac.uk/id/eprint/490447
ISSN: 0142-7873
PURE UUID: 4459d233-a74f-403b-b3da-994f5cfeafc0
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Date deposited: 28 May 2024 16:45
Last modified: 28 May 2024 17:27
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Author:
Gerald Langer
Author:
Glen Wheeler
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