Grania CF. LEVIS COATES & ERSEUS 1985
GRANIA CF. LEVIS COATES & ERSÉUS, 1985 PROBABLY GRANIA LEVIS COATES & ERSÉUS, 1985: 111–112, FIG. 6 Material examined USNM 1283176, CE11570, whole-mounted, sexually immature specimen, with some segments amputated, from off North Carolina, USA, 33°10′23″N, 76°45′23″W. Continental shelf slope,...
| Published in: | PLOS ONE |
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| Main Authors: | , , |
| Format: | Other/Unknown Material |
| Language: | unknown |
| Published: |
Zenodo
2016
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| Subjects: | |
| Online Access: | https://doi.org/10.5281/zenodo.7526479 http://treatment.plazi.org/id/7B5287F0DE55E471E3A83FEB05E2CDBA |
| Summary: | GRANIA CF. LEVIS COATES & ERSÉUS, 1985 PROBABLY GRANIA LEVIS COATES & ERSÉUS, 1985: 111–112, FIG. 6 Material examined USNM 1283176, CE11570, whole-mounted, sexually immature specimen, with some segments amputated, from off North Carolina, USA, 33°10′23″N, 76°45′23″W. Continental shelf slope, 492 m in depth, sand. Collected by C. Erséus, 20 May 2011. COI barcode KT428114; for other genes, see Table 1. Remarks This barcoded, but immature specimen, and thus unsuitable for complete morphological description, was included in the phylogenetic analysis, to enlarge the taxonomic sampling from the north-western Atlantic region. Phylogenetically, this specimen came out as closely related to G. carolinensis sp. nov. (Fig. 15), but it is morphologically distinct by its complete lack of chaetae. The latter trait suggests that this specimen could belong to Grania levis Coates & Erséus, 1985, originally described from somewhat further north, from Georges Bank, south-east of Massachusetts, USA. GENETIC ANALYSES COI clustering The Bayesian inference of the COI sequences divide the 38 individuals into ten well-supported clades (Fig. 11), four of which are found in South Africa, two in Chile, one in Brazil, and three in the North Atlantic. Within-clade variation is generally low, but in one clade, i.e. all specimens referred to the new taxon G. chilensis sp. nov., there is a notable subclustering pattern, dividing this clade into four subclades. A haplotype network (Fig. 12) indicates that G. chilensis sp. nov. is structured geographically, with two subclades found in the southernmost site (Valdivia), one subclade in the northernmost site (Coquimbo), and an intermediate subclade in the intermediately located site (Concepcion). Pairwise genetic distances indicate that in general there is a strong barcoding gap present between lineages within this group. In the G. chilensis sp. nov. clade, however, there is higher than average within-species divergence, although not nearly as great as the lowest between-species ... |
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