MicroCT imaging applied to description of a new species of Pagurus Fabricius, 1775 (Crustacea: Decapoda: Anomura: Paguridae), with selection of three-dimensional type data
Date
2018
Journal Title
Journal ISSN
Volume Title
Publisher
Public Library of Science
Abstract
A new species of hermit crab, Pagurus fraserorum n. sp. (family Paguridae) is described
from rocky subtidal reefs off KwaZulu-Natal, South Africa, and illustrated using both conventional
drawings and colour photographs, and via three-dimensional (3D) X-ray micro-computed
tomography (μCT). Because of the limitation μCT has in detecting very fine and soft
structures, a novel approach of manually drawing setation and spinulation onto the twodimensional
images of the 3D visualizations was used to illustrate the pereopods. In addition,
an interactive figure and rotation movie clips in the supplement section complement the
species description, and the 3D raw data of the 3D type data are downloadable from the
Gigascience Database repository. The new species is the sixth species of Pagurus Fabricius,
1775 reported from South Africa and is closely allied to the Indo-Pacific P. boriaustraliensis
Morgen, 1990 and P. pitagsaleei McLaughlin, 2002, from which it differs by its shorter
ocular peduncles, by the armature of the carpus of the right cheliped, and also in colouration.
This study presents the first description of a hermit crab in which a majority of taxonomic
details are illustrated through 3D volume-rendered illustrations. In addition, colour photographs
and COI molecular barcodes are provided, and the latter compared to COI
sequences of specimens from Western Australia previously identified as P. boriaustraliensis
and of specimens of P. pitagsaleei from Taiwan, as well as to three additional South African
members of the genus. The South African taxon was confirmed to be genetically distinct
from all species tested.
Description
CITATION: Landschoff, J., et al. 2018. MicroCT imaging applied to description of a new species of Pagurus Fabricius, 1775 (Crustacea: Decapoda: Anomura: Paguridae), with selection of three-dimensional type data. PLoS ONE, 13(9):e0203107, doi:10.1371/journal.pone.0203107.
The original publication is available at https://journals.plos.org/plosone/
The original publication is available at https://journals.plos.org/plosone/
Keywords
Pagurus fabricius -- Microbiology, Pagurus fabricius -- Imaging, Hermit crabs -- Classification, Tomography, X-ray microscopy, Three-dimensional imaging in biology
Citation
Landschoff, J., et al. 2018. MicroCT imaging applied to description of a new species of Pagurus Fabricius, 1775 (Crustacea: Decapoda: Anomura: Paguridae), with selection of three-dimensional type data. PLoS ONE, 13(9):e0203107, doi:10.1371/journal.pone.0203107