Project 3813: S. J. Silverbrand, S. M. Lindsay, P. D. Rawson. 2021. Detection of a novel species complex of shell‐boring polychaetes in the northeastern United States. Invertebrate Biology. 140 (3):null.
Specimen: Polydora onagawaensis (unvouchered)
View: Head


Infestations of commercially cultured eastern oysters (Crassostrea virginica) by shell-boring spionid polychaetes are common in the northeastern United States. Historically, infestations were attributed to Polydora websteri, also known as mud-blister worm. Among samples of shell-boring worms sampled from eight oyster farms in northern New England (Maine, New Hampshire, and Massachusetts), we detected P. websteri, as well as worms that were morphologically distinct from P. websteri. Using a combination of light and scanning electron microscopy, along with analysis of molecular variation at the nuclear 18S rRNA and mitochondrial cytochrome c oxidase I (COI) genes, we determined that specimens related to two other species of Polydora, Polydora onagawaensis and Polydora cornuta, were inhabiting burrows within the shells of oysters. Polydora cornuta is not recognized as a shell-boring species and likely invades existing burrows opportunistically. Our analysis of COI sequences identified three distinct genetic lineages among specimens morphologically identified as P. cornuta; one of these lineages is much more geographically widespread than previously had been reported. Polydora onagawaensis is considered a shell-boring species, and our article constitutes the first time this species has been documented in the Northwest Atlantic. We also provide evidence for three divergent COI genetic lineages that occur sympatrically among the specimens provisionally identified as P. onagawaensis in the northeastern United States.

Read the article »

Article DOI: 10.1111/ivb.12343

Project DOI: 10.7934/P3813,
This project contains
  • 125 Media
  • 3 Taxa
  • 5 Specimens
Total size of project's media files: 413.67M

Download Project SDD File
Currently Viewing:
MorphoBank Project 3813
  • Creation Date:
    24 September 2020
  • Publication Date:
    02 September 2021
  • Project views: 13952

    Authors' Institutions

    • University of Maine


    member name taxa specimens media media
    Sara Lindsay
    Project Administrator
    Paul Rawson
    Full membership
    Samantha Silverbrand
    Full membership

    Project has no matrices defined.

    Project views

    type number of views Individual items viewed (where applicable)
    Total project views13952
    Project overview370
    Media views11532Media search (743 views); M693902 (100 views); M693903 (124 views); M694520 (104 views); M694521 (101 views); M694522 (105 views); M694523 (104 views); M694524 (105 views); M736108 (101 views); M736109 (106 views); M736110 (98 views); M736111 (112 views); M736112 (103 views); M736113 (114 views); M736114 (104 views); M736115 (104 views); M736116 (121 views); M736117 (109 views); M736118 (101 views); M736119 (103 views); M736120 (106 views); M736121 (98 views); M736122 (107 views); M736123 (98 views); M736124 (103 views); M736125 (113 views); M736126 (99 views); M736127 (114 views); M736128 (95 views); M736129 (94 views); M736130 (95 views); M736131 (97 views); M736132 (119 views); M736133 (104 views); M736134 (93 views); M736135 (99 views); M736136 (103 views); M736175 (97 views); M736176 (127 views); M736358 (100 views); M736359 (106 views); M736360 (99 views); M736361 (97 views); M736362 (90 views); M736363 (115 views); M736364 (98 views); M736365 (98 views); M736366 (99 views); M736367 (99 views); M736368 (101 views); M736369 (90 views); M737897 (103 views); M737898 (83 views); M737899 (89 views); M737900 (80 views); M737901 (82 views); M737902 (91 views); M737903 (84 views); M737904 (74 views); M737905 (86 views); M737906 (87 views); M737907 (87 views); M737908 (75 views); M737909 (83 views); M738002 (84 views); M738003 (82 views); M738004 (85 views); M738005 (80 views); M738006 (88 views); M738007 (83 views); M738008 (96 views); M738009 (81 views); M738010 (110 views); M738011 (79 views); M738012 (79 views); M738013 (80 views); M738014 (80 views); M738015 (81 views); M738016 (80 views); M738867 (105 views); M738868 (81 views); M738869 (88 views); M738870 (82 views); M738871 (87 views); M738872 (84 views); M738873 (86 views); M738874 (79 views); M738875 (82 views); M738876 (82 views); M738877 (97 views); M738878 (83 views); M738879 (83 views); M738880 (88 views); M738881 (80 views); M738882 (93 views); M738883 (81 views); M738884 (82 views); M738885 (84 views); M738886 (82 views); M738887 (86 views); M738888 (82 views); M738889 (55 views); M738890 (56 views); M738891 (54 views); M738892 (56 views); M738893 (54 views); M738894 (54 views); M738895 (57 views); M738896 (56 views); M738897 (55 views); M738898 (54 views); M738899 (54 views); M738900 (57 views); M738901 (58 views); M738902 (55 views); M738903 (54 views); M738904 (54 views); M738905 (53 views); M738906 (55 views); M738907 (55 views); M738908 (48 views); M738909 (56 views); M738910 (55 views); M738911 (56 views); M738912 (53 views); M738913 (54 views);
    Views for media list786
    Specimen list784
    Taxon list301
    Documents list5

    Project downloads

    type number of downloads Individual items downloaded (where applicable)
    Total downloads from project46
    Project downloads46