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. 2023 Jun 30:11:e102803.
doi: 10.3897/BDJ.11.e102803. eCollection 2023.

Range extensions of Pacific bone-eating worms (Annelida, Siboglinidae, Osedax)

Gabriella H Berman  1 , Shannon B Johnson  2 , Charlotte A Seid  1 , Robert C Vrijenhoek  2 , Greg W Rouse  1
Affiliations

Range extensions of Pacific bone-eating worms (Annelida, Siboglinidae, Osedax)

Gabriella H Berman et al. Biodivers Data J. .

Abstract

First described in 2004 off California, Osedax worms are now known from many of the world's oceans, ranging from 10 to over 4000 m in depth. Currently, little is known about species ranges, since most descriptions are from single localities. In this study, we used new sampling in the north-eastern Pacific and available GenBank data from off Japan and Brazil to report expanded ranges for five species: Osedaxfrankpressi, O.knutei, O.packardorum, O.roseus and O.talkovici. We also provided additional DNA sequences from previously reported localities for two species: Osedaxpriapus and O.randyi. To assess the distribution of each species, we used cytochrome c oxidase subunit I (COI) sequences to generate haplotype networks and assess connectivity amongst localities where sampling permitted. Osedaxfrankpressi, O.packardorum, O.priapus, O.roseus and O.talkovici all had one or more dominant COI haplotypes shared by individuals at multiple localities, suggesting high connectivity throughout some or all of their ranges. Low ΦST values amongst populations for O.packardorum, O.roseus and O.talkovici confirmed high levels of gene flow throughout their known ranges. High ΦST values for O.frankpressi between the eastern Pacific and the Brazilian Atlantic showed little gene flow, reflected by the haplotype network, which had distinct Pacific and Atlantic haplotype clusters. This study greatly expands the ranges and provides insights into the phylogeography for these nine species.

Keywords: COI; deep-sea; invertebrates; phylogeography; polychaetes; range extension; whale-falls.

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Conflict of interest statement

No conflict of interest to declare Disclaimer: This article is (co-)authored by any of the Editors-in-Chief, Managing Editors or their deputies in this journal.

Figures

Figure 1.
Figure 1.
Map of geographic distributions of Osedax species analysed in this work. This map was generated using the R package marmap (Pante and Simon-Bouhet 2013).
Figure 2.
Figure 2.
Depth ranges and regions of occurrence for all Osedax species reported to date, including undescribed species referenced under informal names. Details and sources are in Suppl. material 1.
Figure 3.
Figure 3.
Osedaxfrankpressi COI haplotype network coloured by sampling locality. Cross-hatches and black circles represent missing mutations. Holotype haplotype = *. Network made with alignment of 462 bp.
Figure 4.
Figure 4.
Osedaxroseus COI haplotype network coloured by sampling locality. Cross-hatches and black circles represent missing mutations. Network made with alignment of 730 bp.
Figure 5.
Figure 5.
Osedaxdocricketts COI haplotype network coloured by sampling locality. Cross-hatches and black circles represent missing mutations. Holotype haplotype = *. Network made with alignment of 1005 bp.
Figure 6.
Figure 6.
Osedaxrandyi COI haplotype network coloured by sampling locality. Cross-hatches and black circles represent missing mutations. Holotype haplotype = *. Network made with alignment of 1005 bp.
Figure 7.
Figure 7.
Osedaxwesternflyer COI haplotype network coloured by sampling locality. Cross-hatches and black circles represent missing mutations. Holotype haplotype = *. Network made with alignment of 983 bp.
Figure 8.
Figure 8.
Osedaxknutei COI haplotype network coloured by sampling locality. Cross-hatches and black circles represent missing mutations. Holotype haplotype = *. Network made with alignment of 463 bp.
Figure 9.
Figure 9.
Osedaxpriapus COI haplotype network coloured by sampling locality. Cross-hatches and black circles represent missing mutations. Network made with alignment of 891 bp.
Figure 10.
Figure 10.
Osedaxpackardorum COI haplotype network coloured by sampling locality. Cross-hatches and black circles represent missing mutations. Holotype haplotype = *. Network made with alignment of 793 bp.
Figure 11.
Figure 11.
Osedaxtalkovici COI haplotype network coloured by sampling locality. Cross-hatches and black circles represent missing mutations. Holotype haplotype = *. Network made with alignment of 807 bp.
See this image and copyright information in PMC

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