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The Relationships Between Toxicity, Species and Populations in nassarius Based on Toxin Detection and Multiple Gene Barcoding

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Journal of Ocean University of China 2019年第6期18卷 1515-1522页

作者： ZOU Shanmei SONG Jiameng WANG Chun WANG Changhai College of Resources and Environmental Science Nanjing Agricultural University

nassarius causes many poisonings in China and other Asian countries.The toxicity of nassarius is related to species and populations.However,the molecular assignment of different toxic nassarius samples is still unclear,which deteriorates the poisoning.Our study combined toxicity,toxin detection and multiple genes DNA barcoding to assign the various toxic nassarius species and populations from China coast.The toxicity test indicated that different nassarius species and different populations within one nassarius species had different toxicity.Based on High Performance Liquid Chromatography,the toxin was confirmed to be TTX.The toxin content varied in different samples.The COI,16 S and ITS sequences revealed different toxic nassarius species as monophyletic clades.All the samples tested have been assigned to species level.However,the different toxic populations within N.succinctus,N.variciferus and N.semiplicata did not form separated clades,and the toxic and nontoxic species did not form two clades separately.Our study constructed the relationship between toxicity and taxonomy assignment of different toxic nassarius samples based on toxicity detection and multiple gene DNA barcoding,which provides the basis for controlling poisoning and studying the toxin-resistance difference in Mollusca.It is also indicated that the toxicity of nassarius is really related with species at the genetic level,but not absolutely related with populations.

关键词： nassarius toxicity difference DNA barcoding taxonomy assignment

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Two new species of the genus nassarius(Gastropoda:Nassariidae) from the South China Sea

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Acta Oceanologica Sinica 2021年第9期40卷 90-93页

作者： Suping Zhang Shuqian Zhang Haitao Li Laboratory of Marine Organism Taxonomy and Phylogeny Institute of OceanologyChinese Academy of SciencesQingdao 266071China South China Sea Environmental Monitoring Center Ministry of Natural ResourcesGuangzhou 510300China Center for Ocean Mega-Science Chinese Academy of SciencesQingdao 266071China

Two species of nassarius Duméril, 1805 from the South China Sea are described and illustrated. The specimens are in the Nassariidae collection of the Marine Biological Museum of Chinese Academy of Sciences, Qingdao.nassarius concavus sp. nov., from the sandy bottom at a depth of 180 m, resembles nassarius glabrus Zhang and Zhang, 2014 in general shell morphology, but differs from the latter in having a smaller, more slender adult shell without axial ribs on the upper teleoconch whorls. nassarius nanshaensis sp. nov., from the Nansha Islands at a depth of 56–147 m, is similar to nassarius maxiutongi Zhang, Zhang and Li, 2019 in the shell sculpture, but differs in having a more slender shell with a higher spire, and fewer cusps on the rachidian tooth(9–11 vs. 13–17).

关键词： Gastropoda nassarius new species South China Sea Nansha Islands

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