A new Notomastus (Annelida, Capitellidae) species from Korean waters, with genetic comparison based on three gene markers

Jeong, Man-Ki; Soh, Ho Young; Wi, Jin Hee; Suh, Hae‐Lip

doi:10.3897/zookeys.754.23655

Cited by 4 publications

(4 citation statements)

References 20 publications

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“…nov. closely resembles N. mossambicus by the presence of uniramous chaetiger 1 and prostomial eyespots, but differs from the latter in that the new species has prostomial palpode and slightly areolated epithelium in anterior thorax, whereas N. mossambicus has prostomium without palpode and strongly areolated epithelium in anterior thorax as stated by Thomassin (1970) and Cinar (2005) . The new species differs from the geographically close Korean species Notomastus koreanus described by Jeong et al (2018) in that the new species bears eyespots on prostomium, reduced parapodial lobes in anterior abdomen, as well as neuropodial hooks in the last thoracic chaetiger. In terms of the MGSP , N. sunae sp.…”

Section: Systematicscontrasting

confidence: 55%

A new species of Notomastus (Annelida, Capitellidae) from southern China, with remarks on its morphology and distribution

Lin¹,

García-Garza²,

Lyu³

et al. 2020

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The genus Notomastus is frequently encountered in Chinese waters. However, its species richness is poorly understood. In this study, a Notomastus species obtained from Xiamen Bay, southern China, was described and illustrated as a new species (N. sunaesp. nov.), based on morphological and molecular analyses. The new species is characterized by having uniramous chaetiger 1, the presence of palpode and eyespots on prostomium, chaetiger 11 with notopodial capillaries and neuropodial hooded hooks, and notopodial lobes with simple epithelial extensions on far posterior abdomen. With additional specimens collected from several localities along the southern coasts of China, the morphology and geographical distribution of the new species are discussed. A key is also provided for Notomastus species with neuropodial hooks in thoracic chaetiger 11.

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Section: Systematicscontrasting

confidence: 55%

A new species of Notomastus (Annelida, Capitellidae) from southern China, with remarks on its morphology and distribution

Lin¹,

García-Garza²,

Lyu³

et al. 2020

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“…Recently, a combination of morphological and molecular analysis has been conducted to distinguish very close polychaete species and geographical populations (e.g. Glasby et al 2013; Jeong et al 2017b, 2018). The aim of the present study is to verify the taxonomic status of undescribed Heteromastus species inhabiting Korean waters based on morphological and molecular analysis using two different partial genes (mtCOI and histone H3) in comparison with their closest species in the genus.…”

Section: Introductionmentioning

confidence: 99%

Three new species of Heteromastus (Annelida, Capitellidae) from Korean waters, with genetic evidence based on two gene markers

Jeong¹,

Soh²,

Suh³

2019

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Three undescribed species of Heteromastus Eisig, 1887 were collected from intertidal to sublittoral habitats in western and southern waters of Korea. Heteromastus namhaensis sp. nov. is distinguishable from other congeners by the presence of hemispheric notopodial lobes in the posterior abdomen. Heteromastus gusipoensis sp. nov. closely resembles H. tohbaiensis Yabe & Mawatari, 1998 in the absence of posteriorly extended abdominal notopodial lobes, but differs in the absence of eyespots on the prostomium and distinct node on the shaft of thoracic hooks in H. gusipoensis. Heteromastus koreanus sp. nov. is similar to H. filiformis sensu Hutchings & Rainer, 1982 in the shape of abdominal notopodia, but clearly differs in dentition of the abdominal hooks and methylene green staining pattern (MGSP). DNA sequences (mtCOI and histone H3) of these new Korean species were compared with all sequences of Heteromastus species available in the public database. Molecular results showed distinct genetic differences among these three new Korean species at species level. Comparison of mtCOI gene revealed significant genetic difference between H. filiformis and these Korean species. A comprehensive comparison between three Heteromastus species of present study and their closely related congeners is conducted based on morphological and genetic results.

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“…e.g. , some genera in Capitellidae ( Jeong et al, 2018 ; Jeong, Soh & Suh, 2019 ) and Fauveliopsidae (G Kobayashi, 2023, unpublished data). Mitochondrial gene assembly from the NGS reads of the representative species of such taxa may be effective in designing specific primers and obtaining target gene sequences of them.…”

Section: Discussionmentioning

confidence: 99%

Buried treasure in a public repository: Mining mitochondrial genes of 32 annelid species from sequence reads deposited in the Sequence Read Archive (SRA)

Kobayashi

2023

PeerJ

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Background The mitochondrial genomes (mitogenomes) of metazoans generally include the same set of protein-coding genes, which ensures the homology of mitochondrial genes between species. The mitochondrial genes are often used as reference data for species identification based on genetic data (DNA barcoding). The need for such reference data has been increasing due to the application of environmental DNA (eDNA) analysis for environmental assessments. Recently, the number of publicly available sequence reads obtained with next-generation sequencing (NGS) has been increasing in the public database (the NCBI Sequence Read Archive, SRA). Such freely available NGS reads would be promising sources for assembling mitochondrial protein-coding genes (mPCGs) of organisms whose mitochondrial genes are not available in GenBank. The present study aimed to assemble annelid mPCGs from raw data deposited in the SRA. Methods The recent progress in the classification of Annelida was briefly introduced. In the present study, the mPCGs of 32 annelid species of 19 families in clitellates and allies in Sedentaria (echiurans and polychaetes) were newly assembled from the reads deposited in the SRA. Assembly was performed with a recently published pipeline mitoRNA, which includes cycles of Bowtie2 mapping and Trinity assembly. Assembled mPCGs were deposited in GenBank as Third Party Data (TPA) data. A phylogenetic tree was reconstructed with maximum likelihood (ML) analysis, together with other mPCGs deposited in GenBank. Results and Discussion mPCG assembly was largely successful except for Travisia forbesii; only four genes were detected from the assembled contigs of the species probably due to the reads targeting its parasite. Most genes were largely successfully obtained, whereas atp8, nad2, and nad4l were only successful in 22–24 species. The high nucleotide substitution rates of these genes might be relevant to the failure in the assembly although nad6, which showed a similarly high substitution rate, was successfully assembled. Although the phylogenetic positions of several lineages were not resolved in the present study, the phylogenetic relationships of some polychaetes and leeches that were not inferred by transcriptomes were well resolved probably due to a more dense taxon sampling than previous phylogenetic analyses based on transcriptomes. Although NGS data are generally better sources for resolving phylogenetic relationships of both higher and lower classifications, there are ensuring needs for specific loci of the mitochondrial genes for analyses that do not require high resolutions, such as DNA barcoding, eDNA, and phylogenetic analysis among lower taxa. Assembly from publicly available NGS reads would help design specific primers for the mitochondrial gene sequences of species, whose mitochondrial genes are hard to amplify by Sanger sequencing using universal primers.

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A new Notomastus (Annelida, Capitellidae) species from Korean waters, with genetic comparison based on three gene markers

Cited by 4 publications

References 20 publications

A new species of Notomastus (Annelida, Capitellidae) from southern China, with remarks on its morphology and distribution

A new species of Notomastus (Annelida, Capitellidae) from southern China, with remarks on its morphology and distribution

Three new species of Heteromastus (Annelida, Capitellidae) from Korean waters, with genetic evidence based on two gene markers

Buried treasure in a public repository: Mining mitochondrial genes of 32 annelid species from sequence reads deposited in the Sequence Read Archive (SRA)

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