The complete mitochondrial genome sequence of <i>Metaplax longipes</i> (Grapsoidea: Varunidae)

Liu, Yu; Yang, Tingting; Xin, Zhao-Zhe; Liu, Qiu-Ning; Zhang, Dai-Zhen; Tang, Boping

doi:10.1080/23802359.2019.1574626

Cited by 2 publications

(4 citation statements)

References 13 publications

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“…Monophyly of Metaplax has not yet been confirmed. Moreover, despite various recent research effort employing even complete mitochondrial sequences, the sister group of Metaplax remains unclear (Kitaura et al 2002; Chen et al 2019; Liu et al 2019), which is probably due to the limited genera sampled in phylogenetic analyses.…”

Section: Discussionmentioning

confidence: 99%

“…Indo-West Pacific varunid crabs of the genus Metaplax H. Milne Edwards, 1852 commonly inhabit sheltered shores with silty muddy substrate often near or under shades of mangroves in tropical and subtropical regions. While some studies have reported on various biological aspects of selected species (e.g., Macnae 1963; Beinlich and Polivka 1989; Chakraborty and Choudhury 1994), the phylogenetic position of this group within the Thoracotremata remains obscure due to limited taxon sampling (see Kitaura et al 2002; Chen et al 2019; Liu et al 2019).…”

Section: Introductionmentioning

confidence: 99%

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Review of the mudflat varunid crab genus Metaplax (Crustacea, Brachyura, Varunidae) from East Asia and northern Vietnam

Shih

Hsu

Wong

et al. 2019

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Intertidal mudflat crabs of the genus Metaplax H. Milne Edwards, 1852 (Crustacea: Brachyura: Varunidae) from China, Taiwan, and northern Vietnam are taxonomically revised by morphological and molecular evidence. These crabs show sexual dimorphism and morphological variation of a considerable range in the infraorbital ridge, one of the primary features previously used for species identification. In this study, four species were identified from the region: M. elegans De Man, 1888; M. longipes Stimpson, 1858; M. sheni Gordon, 1930; and M. tredecim Tweedie, 1950. Based on the results of the morphological examination, and as confirmed by molecular evidence from mitochondrial cytochrome oxidase subunit I (COI), taxonomic confusion surrounding M. longipes was resolved, and M. takahasii Sakai, 1939, is considered a junior synonym of M. longipes. The geographical distribution of Metaplax longipes extends along the shores of China, north to Jiangsu, whereas the Southeast Asian M. tredecim was newly recorded from northern Vietnam and Hong Kong.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Review of the mudflat varunid crab genus Metaplax (Crustacea, Brachyura, Varunidae) from East Asia and northern Vietnam

Shih

Hsu

Wong

et al. 2019

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“…For example, Metaplax longipes and Helice japonica are widely distributed in mangrove-fringed mudflats. M. longipes inhabits especially in the high intertidal zone 3 , while H. japonica is found around the mid-intertidal zone 4 . As revealed that M. longipes and H. japonica are also widely distributed in Chinese coastal regions 3 , 5 , and both of them living in the same mudflats are observed in mangroves of Beibu gulf 6 .…”

Section: Introductionmentioning

confidence: 99%

“…M. longipes inhabits especially in the high intertidal zone 3 , while H. japonica is found around the mid-intertidal zone 4 . As revealed that M. longipes and H. japonica are also widely distributed in Chinese coastal regions 3 , 5 , and both of them living in the same mudflats are observed in mangroves of Beibu gulf 6 . Crabs actively dig and maintain burrows in the sediment, and the burrows affect sediment topography and biogeochemistry by modifying particle size distribution, drainage, redox conditions and organic matter as well as nutrient availability 7 .…”

Section: Introductionmentioning

confidence: 99%

Profiling intestinal microbiota of Metaplax longipes and Helice japonica and their co-occurrence relationships with habitat microbes

Fan

et al. 2021

Sci Rep

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Intestinal microbiota plays key roles in maintaining the health and homeostasis of the host. However, information about whether the formation of intestinal microbiota of wild aquatic animals is associated with habitat microbes is not fully understood. Here, intestine samples were collected from two wild crab species and sediment samples were collected from the habitat environment. The total DNA of each sample was extracted, and the V3–V4 regions of 16S rRNA were sequenced using the MiSeq platform. The purpose of this study was to investigate the composition and diversity of intestinal microbiota and habitat microbes, and bacterial community relationships between wild crab intestine and habitat sediment. In the present study, the composition and diversity of intestinal microbiota of the two crab species were different from the habitat microbes. In contrast, a similar composition and diversity of the intestinal microbiota were observed between two crab species. Moreover, the bacterial community relationships between crab intestine and habitat sediment were associated with intestinal regions. Further network analysis revealed that the network structure of the intestinal microbiota was not only associated with intestinal regions, but also with the crab species. Additionally, although the compositions of bacterial functions were similar between crab intestine and sediment, no significant correlation in bacterial functions was observed between crab intestine and sediment. The findings of the present study would contribute to understanding the relationship between intestinal microbiota of wild aquatic animal and habitat microbes, and providing new insights into the intestinal microbiota of wild aquatic animals.

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The complete mitochondrial genome sequence of Metaplax longipes (Grapsoidea: Varunidae)

Cited by 2 publications

References 13 publications

Review of the mudflat varunid crab genus Metaplax (Crustacea, Brachyura, Varunidae) from East Asia and northern Vietnam

Review of the mudflat varunid crab genus Metaplax (Crustacea, Brachyura, Varunidae) from East Asia and northern Vietnam

Profiling intestinal microbiota of Metaplax longipes and Helice japonica and their co-occurrence relationships with habitat microbes

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