Caridina sinanensis, a new species of stygobiotic atyid shrimp (Decapoda, Caridea, Atyidae) from a karst cave in the Guizhou Province, southwestern China

Xu, Dengfeng; Li, Deng-Xu; Zheng, Xiao-Zhuang; Guo, Zhao-Liang

doi:10.3897/zookeys.1008.54190

Cited by 8 publications

(2 citation statements)

References 12 publications

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“…Reduced eyes Caridina (with cornea pigmentation ranging from totally absent to a small black spot) and blind Gammarus are known by many narrowly distributed species from several caves in south China [46][47][48], mostly described in recent years. Their presence in Feihu Dong is in line with this distribution.…”

Section: Discussion On Some Animals Found In Cave Feihu Dongmentioning

confidence: 99%

Feihu Dong, a New Hotspot Cave of Subterranean Biodiversity from China

Huang,

Zhao,

Luo

et al. 2023

Diversity

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China is a country with abundant karst landscapes, but research on cave biodiversity is still limited. Currently, only Ganxiao Dong, located in Huanjiang, Guangxi, has been reported as a hotspot for cave biodiversity. Many of the world’s most troglomorphic species in the major groups of cave animals have been recently discovered in China, making the existence of many more hotspots in the country likely. Feihu Dong, one of these potential hotspot caves, has been systematically investigated to complement a preliminary species list of 1995, leading to the discovery of 62 species of animals from the cave. Among them, 27 are considered troglobionts or stygobionts, 26 are considered troglophiles or stygophiles, and nine are classified as trogloxenes or stygoxenes. Research on the cave biodiversity of Feihu Dong has demonstrated that it currently holds the highest number of known cave animal species in China. Among the most remarkable features of this fauna is the co-occurrence of five species of cave-obligate beetles, all modified for cave life. The biological survey was limited to a small part of the cave. Several habitats (like guano) have not been investigated so far, and several important cave groups have been insufficiently or not sampled (like Ostracoda). Meanwhile, the system increases in length with each new caving expedition. Further discoveries of cave organisms in Feihu Dong are therefore expected. As Feihu Dong and Ganxiao Dong are the only caves in China that have been extensively studied for a large range of organisms, and as they are located in karstic areas that are similar in richness to other regions of southern China, it can be confidently assumed that several other caves of high biodiversity will be discovered in the coming years.

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Section: Discussion On Some Animals Found In Cave Feihu Dongmentioning

confidence: 99%

Feihu Dong, a New Hotspot Cave of Subterranean Biodiversity from China

Huang,

Zhao,

Luo

et al. 2023

Diversity

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“…Cai & Ng (2018) reported a new cave-dwelling atyid Caridina jiangkou from Jiangkou County, which is also of the typical epigean form. More recently, Xu et al (2020) reported Caridina sinanensis from Sinan County, which is unpigmented, and the cornea is vestigial with only a small pigment spot.…”

Section: Introductionmentioning

confidence: 99%

Utilizing integrative taxonomy uncovers a new stygobiotic Caridina species (Decapoda: Caridea: Atyidae) from Guizhou Province, China

Feng¹,

Chen²,

Guo³

2021

Preprint

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Collecting much-needed information on the taxonomy, distribution, and ecology of cave-dwelling shrimp is the foundation for addressing urgent challenges in conservation biodiversity and these fragile ecosystems. Caridina unicolor sp. nov., a new atyid shrimp from an underground stream of Yaoshui Cave, Daqikong scenic area, Libo County, Guizhou Province, southwestern China is described based on morphology and DNA analysis (mitochondrial COI). Caridina unicolor sp. nov. differs from epigean congeners by the variable eye, ranging from reduced to blind; colorless body and appendages; the long stylocerite and sixth abdominal segment; and relatively large eggs. In comparison to other cave species, Caridina unicolor sp. nov. presents a long rostrum and stylocerite; the slender sixth abdominal segment; and the unique shape of appendix masculina. The data on the habitat, ecology, and the levels of threat are provided and suggest that it be categorized as Critically Endangered (CR).

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Description of a new species of freshwater shrimp (Decapoda: Caridea: Atyidae) from Mount Danxia, Guangdong, China, based on morphological and molecular evidence

WANG,

CHU,

2024

Zootaxa

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A new atyid species, Caridina danxiaensis sp. nov., is discovered from Danxia Mountain National Nature Reserve in Guangdong Province. Morphological investigations show obvious differences from any known Caridina species. It can be easily distinguished from its congeners based on distinct characteristics of the rostrum, stylocerite, and uropodal diaeresis. Genetic analysis of Caridina based on 16S rRNA gene sequences also supports the distinctiveness of the new species from all other morphologically similar species. The sequence divergence (Kimura 2-parameter model) based on this gene between the new species and its closest congener, C. clinata, was 5.7%.

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Caridina sinanensis, a new species of stygobiotic atyid shrimp (Decapoda, Caridea, Atyidae) from a karst cave in the Guizhou Province, southwestern China

Cited by 8 publications

References 12 publications

Feihu Dong, a New Hotspot Cave of Subterranean Biodiversity from China

Feihu Dong, a New Hotspot Cave of Subterranean Biodiversity from China

Utilizing integrative taxonomy uncovers a new stygobiotic Caridina species (Decapoda: Caridea: Atyidae) from Guizhou Province, China

Description of a new species of freshwater shrimp (Decapoda: Caridea: Atyidae) from Mount Danxia, Guangdong, China, based on morphological and molecular evidence

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