Absorbing Quality Factor Attribute for Recognising Ordovician Cave and Underground River System in Tahe Oilfield

2017 ◽  
pp. 25-33
Author(s):  
Yuxin Luo ◽  
Ruizhao Yang ◽  
Pengpeng Li ◽  
Duo Gao ◽  
Chao Liu
Keyword(s):  
Quality Factor ◽  
River System ◽  
Tahe Oilfield ◽  
Underground River

Reassignment of 'Triplophysa' jiarongensis (Cypriniformes: Nemacheilidae) to Oreonectes Günther, 1868

Zootaxa ◽  
2019 ◽  
Vol 4565 (3) ◽  
pp. 398 ◽  
Author(s):  
XUAN LIU ◽  
HUAIQING DENG ◽  
ZHIJIN LIU ◽  
JIANG ZHOU
Keyword(s):  
Phylogenetic Analysis ◽  
Short Distance ◽  
River System ◽  
Genetic Distances ◽  
Molecular Evidence ◽  
Karst Cave ◽  
Bayesian Phylogenetic Analysis ◽  
As Species ◽  
Secondary Sexual Dimorphism ◽  
Underground River

Specimens identified as Oreonectes jiarongensis (Cypriniformes: Nemacheilidae) were collected from a karst cave in Jiarong Town and Banzhai Township, Libo County, Guizhou, China. Several lines of morphological and molecular evidence suggested that this species was similar to species of Oreonectes Günther 1868 and not closely related to species of Triplophysa Rendal, 1933. The anterior and posterior nostrils of 'Triplophysa' jiarongensis were separated by a short distance, and there was no secondary sexual dimorphism in male specimens. The Bayesian phylogenetic analysis based on cytochrome b recovered 'T.' jiarongensis in a well-supported clade with Oreonectes daqikongensis, O. shuilongensis, O. furcocaudalis and O. platycephalus, sister to the Triplophysa clade. In addition, the genetic distances between 'T.' jiarongensis and species of Oreonectes were low (O. daqikongensis: 0.114; O. shuilongensis: 0.106; O. platycephalus: 0.180), while distances to species of Triplophysa were higher (T. dorsalis: 0.233; T. yarkandensis: 0.282). Therefore, we reassign 'T.' jiarongensis to Oreonectes. Based on this result, it is now clear that species of both Oreonectes and Triplophysa inhabit the same underground river system in Guizhou. However, as species of Oreonectes are only known from the southern part of Guizhou, it may be that O. jiarongensis inhabits the most northerly part of the range of this genus. 

scholarly journals Characteristics and Reasons for Groundwater Pollution of the Qingshuiquan Underground River System

2013 ◽  
Vol 7 ◽  
pp. 525-528
Author(s):  
Lu Haiping ◽  
Zhao Chunhong ◽  
Liu Qinqin ◽  
Kong Xiangsheng ◽  
Miao Ying ◽  
...  
Keyword(s):  
Groundwater Pollution ◽  
River System ◽  
Underground River

Miroblatta baai, a new very large cockroach species from caves of Borneo (Blattaria: Blaberidae)

Zootaxa ◽  
2007 ◽  
Vol 1390 (1) ◽  
pp. 21 ◽  
Author(s):  
PHILIPPE GRANDCOLAS ◽  
LOUIS DEHARVENG
Keyword(s):  
New Species ◽  
River System ◽  
Morphological Evidence ◽  
Adult Size ◽  
Genital Morphology ◽  
East Kalimantan ◽  
The Family ◽  
Underground River ◽  
A New Species

A new species of the genus Miroblatta Shelford, 1906 is described from caves of Borneo in East Kalimantan, Indonesia. This new species, M. baai sp. nov., is similar to the epigean species M. petrophila Shelford, 1906 also found in Borneo. It differs by a larger adult size, longer legs, shorter wings, longer pronotum showing a remarkable central bulbous structure, lighter colouration and genital morphology (especially sclerite L1 shape). The genital morphology as well as morphological evidence for ovoviviparity confirm that the genus belongs to the family Blaberidae, subfamily Epilamprinae. Contrary to its epigean relative M. petrophila, this new species has been found exclusively in karstic caves of the same underground river system and these occurrences as well as the elongated legs and reduced eyes allow one to assume that this is a truly troglobitic species, so far the first one recorded in the family Blaberidae.

scholarly journals Controlling factors of underground river system of karst region in Pacitan Regency, East Java

2019 ◽  
Vol 311 ◽  
pp. 012033
Author(s):  
A S Bahri ◽  
P V Hardyani ◽  
W Utama ◽  
A Hilyah ◽  
M S Purwanto ◽  
...  
Keyword(s):  
River System ◽  
Controlling Factors ◽  
Karst Region ◽  
Underground River
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