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Harmless sea snail parasite causes mass mortalities in numerous commercial scallop populations in the northern hemisphere

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dc.contributor Háskóli Íslands
dc.contributor University of Iceland
dc.contributor.author Kristmundsson, Árni
dc.contributor.author Freeman, Mark Andrew
dc.date.accessioned 2019-11-22T15:00:29Z
dc.date.available 2019-11-22T15:00:29Z
dc.date.issued 2018-05-18
dc.identifier.citation Kristmundsson, Á., & Freeman, M. A. (2018). Harmless sea snail parasite causes mass mortalities in numerous commercial scallop populations in the northern hemisphere. Scientific Reports, 8(1), 7865. doi:10.1038/s41598-018-26158-1
dc.identifier.issn 2045-2322
dc.identifier.uri https://hdl.handle.net/20.500.11815/1352
dc.description Publisher's version (útgefin grein)
dc.description.abstract Apicomplexans comprise a group of unicellular, often highly pathogenic, obligate parasites exploiting either one or two hosts to complete a full reproductive cycle. For decades, various scallop populations have suffered cyclical mass mortality events, several of which shown to be caused by apicomplexan infections. We report the first dual mollusc life cycle for an apicomplexan: a species highly pathogenic in various pectinid bivalve species, but apathogenic when infecting the common whelk as Merocystis kathae. The sympatric distribution of the common whelk and scallops in the North Atlantic makes transmission extremely effective, occurring via the gastrointestinal tract, by scavenging and predation in whelks and unselective filter feeding in scallops. Infective sporozoites from whelks utilize scallops´ haemocytes to reach muscular tissue, where asexual reproduction occurs. Phylogenetically, this apicomplexan is robustly placed within the Aggregatidae and its inclusion in analyses supports a common ancestry with other basal invertebrate apicomplexans. Scallops seem able to regulate lowlevel infections of M. kathae as they exist in normal populations while epizootics occur during high levels of exposure from locally infected whelks. A targeted removal of whelks from valuable scallop grounds would be advantageous to minimize the occurrence of M. kathae epizootics and prevent damaging economic losses.
dc.description.sponsorship We acknowledge the staff at the Marine and Freshwater Research Institute in Iceland and Grant Campell at Scothatch scallop ranch, for sampling of research material.
dc.format.extent 7865
dc.language.iso en
dc.publisher Springer Science and Business Media LLC
dc.relation.ispartofseries Scientific Reports;8(1)
dc.rights info:eu-repo/semantics/openAccess
dc.subject Multidisciplinary
dc.subject Parasitology
dc.subject Apicomplexans
dc.subject Scallop
dc.subject Sníklar
dc.subject Sníkjulíf
dc.subject Skeldýr
dc.title Harmless sea snail parasite causes mass mortalities in numerous commercial scallop populations in the northern hemisphere
dc.type info:eu-repo/semantics/article
dcterms.license Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. Te images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/. © The Author(s) 2018
dc.description.version Peer Reviewed
dc.identifier.journal Scientific Reports
dc.identifier.doi 10.1038/s41598-018-26158-1
dc.contributor.department Institute for Experimental Pathology, Keldur (UI)
dc.contributor.department Tilraunastöð í meinafræði að Keldum (HÍ)
dc.contributor.school Heilbrigðisvísindasvið (HÍ)
dc.contributor.school School of Health Sciences (UI)

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