The occurrence of Clithon retropictus (v. Martens, 1879) (Gastropoda: Neritidae) in an unusual habitat, northern Jeju Island, Republic of Korea

Noseworthy, Ronald G.; Lee, Hee-Jung; Choi, Kwang-Sik

doi:10.1007/s12601-013-0023-2

Cited by 6 publications

(5 citation statements)

References 5 publications

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“…Among the identified species within the genus Clithon , C. retropictus (Martens, 1878) inhabits saltwater or freshwater and is among the most long-lived gastropods, with a lifespan of 12 years. This species has been reported in Japan, South Korea, Thailand, Southern China, and Taiwan, especially occurring on hard substrates, such as stones and concrete blocks suggesting the association of snail occurrence with stone presence [ 5 , 6 , 7 , 8 ].…”

Section: Introductionmentioning

confidence: 99%

“…In South Korea, this neritid species has been reported to exist in Jeollanam-do (South Jeolla Province), Gyeongsangnam-do (South Gyeongsang Province), and Jeju-do Island [ 9 , 10 , 11 , 12 ]. The details of this species, including shell morphology and ecology, were first determined from studies on the south coast of Jeju Island, after which it was identified from under rocks adjacent to a dry river bed on a muddy substrate along the north coast [ 7 , 12 ]. C. retropictus was also identified from a shell drift at Yaerae-dong, on the southern coast of Jeju Island and from a small, shallow brackish-water estuary southwest of Gangjeong Town.…”

Section: Introductionmentioning

confidence: 99%

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Transcriptomic Analysis of the Endangered Neritid Species Clithon retropictus: De Novo Assembly, Functional Annotation, and Marker Discovery

Park

Patnaik²,

Kang

et al. 2016

Genes

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An aquatic gastropod belonging to the family Neritidae, Clithon retropictus is listed as an endangered class II species in South Korea. The lack of information on its genomic background limits the ability to obtain functional data resources and inhibits informed conservation planning for this species. In the present study, the transcriptomic sequencing and de novo assembly of C. retropictus generated a total of 241,696,750 high-quality reads. These assembled to 282,838 unigenes with mean and N50 lengths of 736.9 and 1201 base pairs, respectively. Of these, 125,616 unigenes were subjected to annotation analysis with known proteins in Protostome DB, COG, GO, and KEGG protein databases (BLASTX; E ≤ 0.00001) and with known nucleotides in the Unigene database (BLASTN; E ≤ 0.00001). The GO analysis indicated that cellular process, cell, and catalytic activity are the predominant GO terms in the biological process, cellular component, and molecular function categories, respectively. In addition, 2093 unigenes were distributed in 107 different KEGG pathways. Furthermore, 49,280 simple sequence repeats were identified in the unigenes (>1 kilobase sequences). This is the first report on the identification of transcriptomic and microsatellite resources for C. retropictus, which opens up the possibility of exploring traits related to the adaptation and acclimatization of this species.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Transcriptomic Analysis of the Endangered Neritid Species Clithon retropictus: De Novo Assembly, Functional Annotation, and Marker Discovery

Park

Patnaik²,

Kang

et al. 2016

Genes

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“…However, relationships among subfamilies and genera within the Neritidae remain largely unresolved due to the scarcity of available molecular data. The neritid species Clithon retropictus (Martens, 1878) is found on hard substrates in coastal streams in Japan, South Korea and Taiwan (Noseworthy et al 2013;Fukumori & Kano 2014, Supplementary material). In this study, we provide the complete mtDNA sequence of C. retropictus, which represents the first complete mitogenome for the genus and the fourth within the gastropod subclass Neritimorpha.…”

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confidence: 99%

The complete mitochondrial genome of the stream snail Clithon retropictus (Neritimorpha: Neritidae)

Fukumori

Itoh

Kano

2016

Mitochondrial DNA Part B

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The complete mitochondrial genome of the stream neritid Clithon retropictus was determined by nextgeneration sequencing. The mitochondrial genome is 15,814 bp in length, comprising two ribosomal RNA genes, 13 protein-coding genes (PCGs) and 22 transfer RNA genes (tRNAs). Of these 37 genes identified, 7 PCGs and 8 tRNAs are encoded on the heavy strand and the other genes on the light strand. This gene order is consistent with the previously published mitochondrial genomes of the other neritid species. This is the first report of a complete mitochondrial genome sequence for the genus and the fourth for the gastropod subclass Neritimorpha.

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“…Clithon retropictum (Martens, 1879) (Gastropoda: Neritidae) is a small snail species (shell size of 15-25 mm) inhabiting hard substrates, such as stones and concrete blocks, in brackish or freshwater riverbeds in Korea, Japan, southern China and Taiwan (Furujo and Tomiyama, 2000;Ohara and Tomiyama, 2000;Noseworthy et al, 2013). It is among the most long-lived gastropods, with a lifespan of 12 years (Furujo and Tomiyama, 2000;Shigemiya and Kato, 2001).…”

Section: Introductionmentioning

confidence: 99%

Research Article Development of 21 novel polynucleotide microsatellite markers in a Clithon retropictum (Gastropoda: Neritidae), using next-generation sequencing

Hyun¹,

Song²,

Kim³

et al. 2017

Genet. Mol. Res.

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ABSTRACT. The neritid species Clithon retropictum (Gastropoda), an oviparous snail, is distributed in freshwater and brackish water in southern Korea, south-east Japan, southern China and Taiwan. This species is listed as a class II endangered species in Korea because of its decreasing population size. It has led to an increase in the need for genetic information about this species. For this aim, in this study, we developed microsatellite markers for C. retropictum by using nextgeneration sequencing. A total of 185,972 sequences containing motifs with a minimum of five repeats motifs were identified from 3,392,119 reads. Of the 46 loci screened among 49 individuals, 36 were successfully amplified and 21 were polymorphic among 49 individuals, with 14 tri-nucleotide repeats and 7 tetra-nucleotide repeats. All loci exhibited relatively high genetic variability except one locus (CR08), with an average of 10.33 alleles per locus, and the mean observed and expected heterozygosities were 0.661 and 0.758, respectively. Our results demonstrated the utility of next-generation sequencing as a method for the rapid and cost-effective identification of microsatellites. These 21 newly developed microsatellite markers will be informative Hye Suck An et al. 2Genetics and Molecular Research 16 (4): gmr 16039806 tools for investigating the genetic structure and diversity among populations of this endangered species and will help facilitate effective strategies for its conservation.

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The occurrence of Clithon retropictus (v. Martens, 1879) (Gastropoda: Neritidae) in an unusual habitat, northern Jeju Island, Republic of Korea

Cited by 6 publications

References 5 publications

Transcriptomic Analysis of the Endangered Neritid Species Clithon retropictus: De Novo Assembly, Functional Annotation, and Marker Discovery

Transcriptomic Analysis of the Endangered Neritid Species Clithon retropictus: De Novo Assembly, Functional Annotation, and Marker Discovery

The complete mitochondrial genome of the stream snail Clithon retropictus (Neritimorpha: Neritidae)

Research Article Development of 21 novel polynucleotide microsatellite markers in a Clithon retropictum (Gastropoda: Neritidae), using next-generation sequencing

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