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LIBRIS Formathandbok  (Information om MARC21)
FältnamnIndikatorerMetadata
00003166naa a2200457 4500
001oai:gup.ub.gu.se/336392
003SwePub
008240910s2024 | |||||||||||000 ||eng|
0247 a https://gup.ub.gu.se/publication/3363922 URI
0247 a https://doi.org/10.1111/jeu.130212 DOI
040 a (SwePub)gu
041 a eng
042 9 SwePub
072 7a ref2 swepub-contenttype
072 7a art2 swepub-publicationtype
1001 a Alfjorden, Anders4 aut
2451 0a Identification of a new gregarine parasite associated with mass mortality events of freshwater pearl mussels (Margaritifera margaritifera) in Sweden
264 1c 2024
520 a Freshwater bivalves play key ecological roles in lakes and rivers, largely contributing to healthy ecosystems. The freshwater pearl mussel, Margaritifera margaritifera, is found in Europe and on the East coast of North America. Once common in oxygenated streams, M. margaritifera is rapidly declining and consequently assessed as a threatened species worldwide. Deterioration of water quality has been considered the main factor for the mass mortality events affecting this species. Yet, the role of parasitic infections has not been investigated. Here, we report the discovery of three novel protist lineages found in Swedish populations of M. margaritifera belonging to one of the terrestrial groups of gregarines (Eugregarinorida, Apicomplexa). These lineages are closely related-but clearly separated-from the tadpole parasite Nematopsis temporariae. In one lineage, which is specifically associated with mortality events of M. margaritifera, we found cysts containing single vermiform zoites in the gills and other organs of diseased individuals using microscopy and in situ hybridization. This represents the first report of a parasitic infection in M. margaritifera that may be linked to the decline of this mussel species. We propose a tentative life cycle with the distribution of different developmental stages and potential exit from the host into the environment.
650 7a NATURVETENSKAPx Biologix Mikrobiologi0 (SwePub)106062 hsv//swe
650 7a NATURAL SCIENCESx Biological Sciencesx Microbiology0 (SwePub)106062 hsv//eng
653 a freshwater perl mussel
653 a gregarine
653 a ISH
653 a Margaritifera margaritifera
653 a mass mortality
653 a mortality
653 a Nematopsis
653 a pathology
653 a phylogeny
653 a TEM
7001 a Onut-Brannstrom, Ioana4 aut
7001 a Wengström, Niklas,d 1969u Gothenburg University,Göteborgs universitet,Institutionen för biologi och miljövetenskap,Department of Biological and Environmental Sciences4 aut0 (Swepub:gu)xwenni
7001 a Kristmundsson, Arni4 aut
7001 a Jamy, Mahwash4 aut
7001 a Persson, B. David4 aut
7001 a Burki, Fabien4 aut
7102 a Göteborgs universitetb Institutionen för biologi och miljövetenskap4 org
7730 t JOURNAL OF EUKARYOTIC MICROBIOLOGYg 71:3q 71:3x 1066-5234x 1550-7408
8564 8u https://gup.ub.gu.se/publication/336392
8564 8u https://doi.org/10.1111/jeu.13021

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