Data from: Assessing species boundaries in the open sea: an integrative taxonomic approach to the pteropod genus Diacavolinia
To track changes in pelagic biodiversity in response to climate change, it is essential to accurately define species boundaries. Shelled pteropods are a group of holoplanktonic gastropods that have been proposed as bio-indicators because of their vulnerability to ocean acidification. A particularly...
| Main Authors: | , , , |
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| Format: | Dataset |
| Language: | unknown |
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2020
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| Online Access: | https://zenodo.org/record/3961952 https://doi.org/10.5061/dryad.n8h2fv0 |
| Summary: | To track changes in pelagic biodiversity in response to climate change, it is essential to accurately define species boundaries. Shelled pteropods are a group of holoplanktonic gastropods that have been proposed as bio-indicators because of their vulnerability to ocean acidification. A particularly suitable, yet challenging group for integrative taxonomy is the pteropod genus Diacavolinia, which has a circumglobal distribution and is the most species-rich pteropod genus, with 24 described species. We assessed species boundaries in this genus, with inferences based on geometric morphometric analyses of shell-shape variation, genetic (cytochrome c oxidase subunit I, 28S rDNA sequences) and geographic data. We found support for a total of 13 species worldwide, with observations of 706 museum and 263 freshly collected specimens across a global collection of material, including holo‐ and paratype specimens for 14 species. In the Atlantic Ocean, two species are well supported, in contrast to the eight currently described, and in the Indo‐Pacific we found a maximum of 11 species, partially merging 13 of the described species. Distributions of these revised species are congruent with well-known biogeographic provinces. Combining varied datasets in an integrative framework may be suitable for many diverse taxa and is an important first step to predicting species-specific responses to global change. Supplementary Information S1.Sample collection information, group assignment using integrative approach, data usage for geometric morphometric analyses and GenBank accession codes for each Diacavolinia specimen used in this study. Amb. = Ambiguous LDA assignment; Unkn. = Unknown integrative group; N.A. = Not available.SupplementaryInformationS1.xlsxSupplementary Information S2.Photographs of Diacavolinia specimens included in this study in (A) ventral and (B) lateral orientations.SupplementaryInformationS2.rarSupplementary Information S3.Geometric morphometric data of Diacavolinia specimens: centroid sizes and relative warps ... |
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