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Two lineages of bivalve transmissible neoplasia affect the blue mussel Mytilus trossulus Gould in the subarctic Sea of Okhotsk

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Current Zoology 2023年第1期69卷 91-102页

作者： Maria Skazina Nelly Odintsova Mariia Maiorova Lidia Frolova Irina Dolganova Kira Regel Petr Strelkov Department of Applied Ecology St Petersburg State UniversitySt.Petersburg 199034Russia National Scientific Center of Marine Biology Far Eastern Branch of the Russian Academy of SciencesVladivostok 690041Russia Institute of the Biological Problems of the North Far Eastern Branch of the Russian Academy of SciencesMagadan 685000Russia Laboratory of Monitoring and Conservation of Natural Arctic Ecosystems Murmansk Arctic State UniversityMurmansk 183038Russia

There are increasing findings of the bivalve transmissible neoplasia derived from the pacific mussel Mytilus trossulus(MtrBTN)in populations of different Mytilus species *** subarctic is an area where this disease has not yet been sought despite the fact that Mytilus *** widespread there,and *** itself is a boreal *** used flow cytometry of the hemolymph,hemocytology,and histology to diagnose disseminated neoplasia in a sample of *** from Magadan in the subarctic Sea of *** was identified in 11 of 214 mussels *** mtDNA COI sequencing,we revealed genotypes identical or nearly identical to known MtrBTN ones in the hemolymph of most of the diseased *** MtrBTN evolutionary lineages have been identified,the widespread MtrBTN2,and MtrBTN1,so far only known from *** in British Columbia on the other side of the pacific from *** addition,MtrBTN2 was represented by 2 common diverged mtDNA *** conclusions were confirmed for selected cancerous mussels by molecular cloning of COI and additional nuclear and mtDNA *** the background of high genetic diversity,different cancers were similar in terms of ploidy(range 4.0–5.8 n)and nuclear-to-cell *** study provides the first description of neoplasia and MtrBTN in mussels from the Sea of Okhotsk and from the subarctic,of both MtrBTN1 and MtrBTN2 in the same mussel population,and the first direct comparison between these transmissible cancers.

关键词： disseminated neoplasia molecular identification Mytilus pacific subarctic transmissible cancer

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