A new cave-dwelling genus and species of Nerillidae (Annelida) from the Ryukyu Islands, Japan
Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › fagfællebedømt
A new genus and species of Nerillidae, Nipponerilla irabuensis gen. nov., sp. nov., is described from an anchialine cave in Shimoji Island, west of Irabu Island (Miyako Islands, Southwestern Japan). Its morphology was examined with light, scanning electron, and confocal laser scanning microscopy. This new species, along with two putative new cave species from the Turks and Caicos Islands and several closely related nerillids, was included in a phylogenetic analysis employing five concatenated gene markers (16S rRNA, 18S rRNA, 28S rRNA, H3, and COI). Nipponerilla irabuensis gen. nov., sp. nov. was found to be sister taxon to the cave-exclusive genus Speleonerilla Worsaae, Sterrer & Iliffe, in Worsaae et al., 2019, but shows morphological resemblance to both Speleonerilla and Mesonerilla Remane, 1949. Thus, Nipponerilla gen. nov. constitutes a new monotypic genus in Nerillidae diagnosed by a combination of the following characters: nine segments, compound chaetae, high palp and antennae to body length ratios, and gonochoristic reproduction with two pairs of spermioducts opening in segments VII and VIII. Its placement among Nerillidae is discussed, along with its putative adaptations to an anchialine environment.
| Originalsprog | Engelsk |
|---|---|
| Artikelnummer | 67 |
| Tidsskrift | Marine Biodiversity |
| Vol/bind | 51 |
| Udgave nummer | 4 |
| Antal sider | 18 |
| ISSN | 1867-1616 |
| DOI | |
| Status | Udgivet - 2021 |
Bibliografisk note
Funding Information:
We are greatly indebted to several people who assisted us with the logistics during the sampling trips to Japan and the Turks and Caicos Islands including Masaru Mizuyama for his assistance in sampling at Irabu Island in 2018 and Marc C. Allentoft-Larsen for his help with sampling in Conch Bar Cave in 2019. Special thanks to the Department of Environment and Coastal Resources (DECR) Ministry of Tourism, Environment, Heritage, Culture & Gaming, Michael Pateman, Mark Parrish, Naqqi Manco, and Jon Ward for their willingness to grant collection and export permits (SRP No.: 18-12-01-23) to our team and provide onsite logistical support. We thank the editors and two anonymous reviewers for their comments which helped improve the paper.
Funding Information:
Field and laboratory work during the expedition to Southern Japan in 2018 was financially supported by grants from the Scandinavia-Japan Sasakawa Foundation and Ragna Rask-Nielsens Grundforskningsfond to KW and the Japan Society for the Promotion of Science (grant no. S18162) to NM and KW, and partly supported by JSPS Grant-in-Aid for Scientific Research (S) (No. 16H06309) and (B) (No. 20H03313) to YF. Material obtained from the Turks and Caicos Islands is based on work supported by the Smithsonian’s Global Genome Initiative under Grant No.: GGI-2019-Rolling-214 to KO and the Peter Buck Fellowship Program to BCG. Confocal microscopy work was supported by the Carlsberg Foundation (grant # CF15-0946 to KW).
Publisher Copyright:
© 2021, Senckenberg Gesellschaft für Naturforschung.
ID: 275829428