Vanmanenia marmorata, a new species of loach (Teleostei: Gastromyzontidae) from the middle Chang-Jiang Basin in Guizhou Province, south China

The gastromyzontid genus Vanmanenia was established by Hora in 1932, based on the type species Vanmanenia stenosoma. The genus is a loach group adapted to running waters of streams from southern China, northern Vietnam and Laos. Currently, 19 valid species of the genus have been recognised. The northernmost distribution of the genus is the Yangtze River (= Chang-Jiang in Chinese) Basin and five species (V. maculata, V. intermedia, V. stenosoma, V. pseudostriata and V. gymnetrus) have been reported from the Basin. Vanmanenia marmorata, a new hillstream species of loach, is here described from the middle Chang-Jiang Basin in Guizhou Province, south China. It is distinguished from its congeners by having a combination of the following characters: three triangular-shaped rostral lobules; postdorsal saddles wider than interspaces; a more backwards-placed anus (the vent to anal distance 30.5–36.9% of the pelvic to anal distance); a larger gill opening with its upper extremity reaching the level of the middle of the orbit; anal-fin base length 5.6–6.4% of SL; caudal-peduncle length 11.6–12.9% of SL; prepelvic length 51.1–53.4% of SL. Its validity is also affirmed by its distinct cyt b gene sequence divergence with all sampled congeners and its monophyly recovered in a cyt b gene-based phylogenetic analysis.

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Vanmanenia intermedia Fang, 1935, a valid hill-stream species of loach (Teleostei: Gastromyzontidae) from the middle Yangtze River basin, Southwest China

Zootaxa ◽

10.11646/zootaxa.4819.1.5 ◽

2020 ◽

Vol 4819 (1) ◽

pp. 109-127

Author(s):

SHU-QING DENG ◽

E ZHANG

Keyword(s):

Yangtze River Basin ◽

Sequence Divergence ◽

Morphological Characters ◽

Congeneric Species ◽

Cyt B ◽

Lower Margin ◽

Black Stripe ◽

Gill Opening ◽

Distal Edge ◽

Cyt B Gene

Vanmanenia intermedia, which has long been synonymized with V. pingchowensis since 1980, is here revalidated using morphological characters and molecular evidences, and redescribed on the basis of topotypic specimens. This species is distinguished from all other congeneric species by the following combination of characters: triangular-shaped rostral lobules without secondary rostral barbels; distal edge of dorsal-fin slightly concave; no longitudinal black stripe on the flank; a longer snout (length 52.6–64.5 % of HL); a more backwards-placed anus (the vent to anal distance 34.7–46.1% of the pelvic to anal distance); a slender caudal peduncle (depth 9.1–11.3 % of SL); a longer anal-fin base (length 7.5–9.5 % of SL); and a smaller gill opening with its upper extremity closer to the level of the lower margin of the orbit. The validity of V. intermedia is also confirmed by its significant cyt b gene sequence divergence with all sampled congeneric species and its monophyly recovered in the cyt b gene-based phylogenetic analysis.

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Revisions of two poorly known species of Opisthotropis Günther, 1872 (Squamata: Colubridae: Natricinae) with description of a new species from China

Zootaxa ◽

10.11646/zootaxa.4247.4.3 ◽

2017 ◽

Vol 4247 (4) ◽

pp. 391 ◽

Cited By ~ 3

Author(s):

YING-YONG WANG ◽

QIANG GUO ◽

ZU-YAO LIU ◽

ZHI-TONG LYU ◽

JIAN WANG ◽

...

Keyword(s):

Southern China ◽

Phylogenetic Analyses ◽

Eastern China ◽

Morphological Characters ◽

Species Boundaries ◽

Integrative Approach ◽

Cyt B ◽

Molecular Phylogenetic ◽

Cyt B Gene ◽

A New Species

The previous descriptions of Opisthotropis maxwelli Boulenger, 1914 and O. andersonii (Boulenger, 1888) were considered imperfect due to the limited number of specimens. This may in turn cause a problem for accurate species identification. In our study, the species boundaries of these two species were investigated using an integrative approach incorporating morphological characters and molecular phylogenetic analyses of the mitochondrial Cyt b gene of 26 specimens of nine known Opisthotropis species collected from south-eastern China. Our results surprisingly revealed a new cryptic species, Opisthotropis shenzhenensis sp. nov., from Shenzhen and Dongguan, Guangdong Province, southern China. Further, we re-described O. maxwelli based on several specimens from Fujian and Guangdong, and O. andersonii based on a series of specimens from Hong Kong, Shenzhen and Guangzhou, China. We provide an updated identification key to all described Opisthotropis species from China.

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Population diversity of striped snakehead, Channa striata (Bloch, 1793) from Bekasi, West Java and Barito Kuala, South Kalimantan using Cytochrome B gene

Jurnal Iktiologi Indonesia ◽

10.32491/jii.v21i1.552 ◽

2021 ◽

Vol 21 (1) ◽

pp. 61-73

Author(s):

Gita Kusuma Rahayu ◽

Dedy Duryadi Solihin ◽

Nurlisa A Butet

Keyword(s):

Genetic Distance ◽

Cytochrome B ◽

Southern China ◽

Genetic Relationships ◽

Population Diversity ◽

Cytochrome B Gene ◽

Cyt B ◽

Channa Striata ◽

Commercially Important ◽

Cyt B Gene

Channa striata or striped snakehead is one of species from family Channidae that widely distributed from India, Southern China to Southeast Asia including Indonesia. It is a commercially important freshwater fish because of its taste and health benefits. High demand of this species trigger many efforts to increase its production, one of them is genetic monitoring. This study used complete Cytochrome b gene sequence of mtDNA for determining genetic variation in wild population of C. striata. C. striata samples (n=31) from two different locations in Indonesia were amplified and analyzed using MEGA ver 7.0. Sequences of 1140 bp complete cyt b gene revealed the presence of 2 haplotypes with 1137 bp conserved sites and 3 bp variable sites (0,26%). Overlapping haplotype was observed in samples from Bekasi, however there were only one haplotype in samples from South Borneo. Interspecies genetic were analysed with species from Genebank and showed that C. striata from Indonesia has close genetic relationships with C. striata from Borneo-Indonesia (MN057164.1) with genetic distance 0%. This study also revealed that C. striata from Indonesia were phylogenetically distinct with C. striata from China with 9,2%K2P genetic distance. Complete cyt b gene has been proven for assessing phylogenetic relationships and population diversity of C. striata in Indonesia.

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Two new glyptosternine catfishes (Teleostei: Sisoridae) from Vietnam and China

Zootaxa ◽

10.11646/zootaxa.428.1.1 ◽

2004 ◽

Vol 428 (1) ◽

pp. 1 ◽

Cited By ~ 5

Author(s):

HEOK HEE NG

Keyword(s):

New Species ◽

Southern China ◽

Pectoral Fin ◽

Caudal Peduncle ◽

Body Depth ◽

Snout Length ◽

Gill Opening ◽

Adipose Fin ◽

Peduncle Length ◽

River Drainages

Pareuchiloglanis macropterus new species, is described from the Salween River (Nujiang) and Irrawaddy River drainages in southern China, and P. rhabdurus new species, is described from the Red River (Song Hong) drainage in northern Vietnam. Pareuchiloglanis macropterus can be distinguished from congeners by the following unique combination of characters: prepelvic length 37.0 42.2% SL; length of adipose-fin base 31.8 37.0% SL (dorsal-fin base 3.3 3.5 times in adipose-fin base); caudal peduncle length 17.6 20.0% SL; caudal peduncle depth 6.8 7.4% SL (2.4 3.0 times in caudal peduncle length); body depth at anus 9.5 12.6% SL; snout length 50.3 56.5% HL; interorbital distance 24.6 30.2% HL; 41 42 vertebrae; pectoral fin reaching to pelvic-fin origin; ventral limit of gill opening to level of third or fourth pectoral-fin element; posterior base of adipose fin notched and separate from caudal fin; and presence of pale patches on body. Pareuchiloglanis rhabdurus can be distinguished from congeners chiefly by a slender body (8.7% SL) and caudal peduncle (4.2% SL; 4.2 times in caudal peduncle length), as well as a combination of the following characters: length of adipose-fin base 34.7% SL; dorsal to adipose distance 12.2% SL; caudal peduncle length 17.6% SL; snout length 57.0% HL; interorbital distance 25.5% HL; adipose and caudal fins separate; and ventral limit of gill opening to base of first pectoral-fin element.

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Sequence analysis of mitochondrial COⅠand Cyt b gene of Nemipterus species in South China Sea

Journal of Fishery Sciences of China ◽

10.3724/sp.j.1118.2012.00355 ◽

2013 ◽

Vol 19 (2) ◽

pp. 355-363 ◽

Cited By ~ 1

Author(s):

Lina DONG ◽

Zirong HUANG ◽

Yongzhen LI ◽

Guobao CHENG

Keyword(s):

Sequence Analysis ◽

South China Sea ◽

South China ◽

Cyt B ◽

China Sea ◽

Cyt B Gene

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Mitochondrial DNA and morphometrical identification of a new species of Hylomyscus (Rodentia: Muridae) from West Africa

Zootaxa ◽

10.11646/zootaxa.2579.1.2 ◽

2010 ◽

Vol 2579 (1) ◽

pp. 30 ◽

Cited By ~ 15

Author(s):

VIOLAINE NICOLAS ◽

AYODEJII OLAYEMI ◽

WIM WENDELEN ◽

MARC COLYN

Keyword(s):

New Species ◽

Species Complex ◽

Sequence Divergence ◽

Cyt B ◽

16S Rdna Gene ◽

Dental Measurements ◽

Cyt B Gene ◽

A New Species ◽

16S Rdna Gene Sequencing

In this paper we describe a new species of Hylomyscus based on molecular (Cyt b and 16S rDNA gene sequencing) and morphometrical analyses. This new species occurs in Benin and Nigeria, and probably also in Togo. It differs by 8.29 to 10.40 % of sequence divergence (K2P distance for the Cyt b gene) from all other species of the H. alleni species complex, and can be distinguished from these species through morphometrical multivariate analyses. It differs significantly from its closest relative, H. simus, by four external and nine cranio-dental measurements. The role of rivers and Pleistocene forest refugia in the diversification of the H. alleni species complex is discussed.

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A preliminary study on sediment records of possible typhoon in the northern South China Sea during the past 6500 yr

The Holocene ◽

10.1177/09596836211003229 ◽

2021 ◽

pp. 095968362110032

Author(s):

Pingyuan Li ◽

Mingkun Li ◽

Huayang Gan ◽

Zhen Xia

Keyword(s):

South China Sea ◽

South China ◽

Southern China ◽

Northern South China Sea ◽

River Estuary ◽

Pearl River Estuary ◽

Human Beings ◽

China Sea ◽

The Pearl River ◽

China Coast

Typhoon is an important meteorological phenomenon that affects the living and development of human beings on the southern China coast. However, there is still lack of clarity in the paleo-typhoon history and its influence on the evolution of the ancient human settlement environment since the mid-Holocene. Here, we identify six typhoon-like deposits from a core retrieved from the northern South China Sea shelf, close to the Pearl River Estuary, based on accelerated mass spectrometry 14C dating, grain size, and geochemistry. The sand fractions, CaO, Sr, SiO2/TiO2, and SiO2/Al2O3 were used to indicate the typhoon-like deposits. Results show that the ages with high-frequency typhoons are present ~200–300 cal yr BP, ~800–1000 cal yr BP, ~1500–1700 cal yr BP, ~2000–2100 cal yr BP, ~2400–2500 cal yr BP, and ~2700–3000 cal yr BP. Our results are comparable to the records from adjacent regions. Significantly, the vast tides occurred in the duration of ~2700–3000 cal yr BP in southern China, which probably caused the ancestors’ migration to the inland. Further studies are needed to deeply study the paleo-typhoon history in the southern China coast to verify our results.

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