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: 35112

    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 views35112
    Project overview888
    Media views29187Media search (1709 views); M693902 (266 views); M693903 (292 views); M694520 (235 views); M694521 (230 views); M694522 (256 views); M694523 (244 views); M694524 (241 views); M736108 (278 views); M736109 (294 views); M736110 (259 views); M736111 (269 views); M736112 (276 views); M736113 (258 views); M736114 (264 views); M736115 (278 views); M736116 (282 views); M736117 (277 views); M736118 (265 views); M736119 (259 views); M736120 (267 views); M736121 (240 views); M736122 (300 views); M736123 (243 views); M736124 (281 views); M736125 (298 views); M736126 (282 views); M736127 (289 views); M736128 (260 views); M736129 (252 views); M736130 (252 views); M736131 (240 views); M736132 (294 views); M736133 (270 views); M736134 (255 views); M736135 (276 views); M736136 (255 views); M736175 (226 views); M736176 (311 views); M736358 (263 views); M736359 (284 views); M736360 (235 views); M736361 (286 views); M736362 (260 views); M736363 (304 views); M736364 (273 views); M736365 (249 views); M736366 (259 views); M736367 (256 views); M736368 (264 views); M736369 (239 views); M737897 (240 views); M737898 (217 views); M737899 (202 views); M737900 (205 views); M737901 (229 views); M737902 (250 views); M737903 (216 views); M737904 (186 views); M737905 (239 views); M737906 (209 views); M737907 (241 views); M737908 (233 views); M737909 (201 views); M738002 (214 views); M738003 (210 views); M738004 (227 views); M738005 (206 views); M738006 (222 views); M738007 (225 views); M738008 (211 views); M738009 (206 views); M738010 (242 views); M738011 (202 views); M738012 (214 views); M738013 (195 views); M738014 (221 views); M738015 (205 views); M738016 (213 views); M738867 (245 views); M738868 (189 views); M738869 (231 views); M738870 (200 views); M738871 (245 views); M738872 (221 views); M738873 (261 views); M738874 (218 views); M738875 (194 views); M738876 (191 views); M738877 (220 views); M738878 (208 views); M738879 (242 views); M738880 (237 views); M738881 (203 views); M738882 (251 views); M738883 (214 views); M738884 (221 views); M738885 (254 views); M738886 (223 views); M738887 (218 views); M738888 (229 views); M738889 (127 views); M738890 (120 views); M738891 (127 views); M738892 (122 views); M738893 (122 views); M738894 (148 views); M738895 (131 views); M738896 (125 views); M738897 (132 views); M738898 (121 views); M738899 (129 views); M738900 (149 views); M738901 (132 views); M738902 (128 views); M738903 (131 views); M738904 (119 views); M738905 (120 views); M738906 (127 views); M738907 (135 views); M738908 (126 views); M738909 (124 views); M738910 (126 views); M738911 (125 views); M738912 (123 views); M738913 (127 views);
    Views for media list1884
    Specimen list2035
    Taxon list690
    Documents list6
    Matrix views1Matrix landing page (1 view);

    Project downloads

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