Characterization of Root Architectures and Soil Macropore Networks Under Different Ecosystems Using X-ray CT Scanning in the Qinghai Lake Watershed, NE Qinghai–Tibet Plateau

2019 ◽  
Vol 19 (4) ◽  
pp. 743-757 ◽  
Author(s):  
Zong-chao Li ◽  
Xia Hu ◽  
Xiao-yan Li
Keyword(s):  
Ct Scanning ◽  
Tibet Plateau ◽  
Qinghai Lake ◽  
X Ray ◽  
Qinghai Tibet Plateau ◽  
Soil Macropore

Soil Macropore Structure Characterized by X-Ray Computed Tomography Under Different Land Uses in the Qinghai Lake Watershed, Qinghai-Tibet Plateau

Pedosphere ◽  
2018 ◽  
Vol 28 (3) ◽  
pp. 478-487 ◽  
Author(s):  
Xia HU ◽  
Zongchao LI ◽  
Xiaoyan LI ◽  
Pei WANG ◽  
Yunduo ZHAO ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Tibet Plateau ◽  
Qinghai Lake ◽  
Land Uses ◽  
X Ray ◽  
Macropore Structure ◽  
X Ray Computed ◽  
Qinghai Tibet Plateau ◽  
Soil Macropore

scholarly journals Vector-Borne Pathogens with Veterinary and Public Health Significance in Melophagus ovinus (Sheep Ked) from the Qinghai-Tibet Plateau

Pathogens ◽  
2021 ◽  
Vol 10 (2) ◽  
pp. 249
Author(s):  
Qing-Xun Zhang ◽  
Ye Wang ◽  
Ying Li ◽  
Shu-Yi Han ◽  
Bo Wang ◽  
...  
Keyword(s):  
Public Health ◽  
Molecular Characterization ◽  
Tibet Plateau ◽  
Border Disease Virus ◽  
Public Health Significance ◽  
Melophagus Ovinus ◽  
Health Significance ◽  
Vector Borne ◽  
Qinghai Tibet Plateau

Melophagus ovinus (sheep ked) is a hematophagous ectoparasite that mainly parasitizes sheep. In addition to causing inflammation, wool loss, and skin damage to the animal hosts, M. ovinus also serves as a vector for a variety of pathogens and is highly likely to participate in the life and transmission cycle of pathogenic organisms. Herein, we investigated the presence and molecular characterization of vector-borne pathogens in M. ovinus from Qinghai-Tibet Plateau, China. A total of 92 M. ovinus pools collected from the Qinghai province of China were screened for the presence of selected vector-borne pathogens. The overall positive rate of A. ovis, A. bovis, A. phagocytophilum, and T. ovis in M. ovinus was 39.1%, 17.4%, 9.8%, and 89.1%, respectively. All of the samples were negative for Border disease virus (BDV), other Anaplasma species, Babesia spp., Rickettsia spp., and Borrelia spp. Co-infection of different Anaplasma species and T. ovis occurred in 51.2% of all samples with T. ovis. The positive rates of A. ovis, A. bovis, and A. phagocytophilum in different regions and altitudes of the sampling sites were significantly different. Sequence and phylogenetic analysis of target genes confirmed their identity with corresponding pathogens. Our results elucidate the occurrence and molecular characterization of Anaplasma spp. and Theileria spp. in M. ovinus, which could act as potential zoonotic reservoirs. To the best of our knowledge, this is the first report of the detection of A. bovis and A. phagocytophilum DNA in M. ovinus. This study gives the first extensive molecular survey of vector-borne pathogens with veterinary and public health significance in M. ovinus from the Qinghai-Tibet Plateau, China.

Characterization of the Rickettsia-like and Coxiella-like symbionts in the tick Dermacentor everestianus Hirst, 1926 (Acari: Ixodidae) from the Qinghai-Tibet Plateau

2019 ◽  
Vol 24 (1) ◽  
pp. 106
Author(s):  
Ningxin Li ◽  
Sisi Li ◽  
Duo Wang ◽  
Peng Yan ◽  
Wenying Wang ◽  
...  
Keyword(s):  
Salivary Glands ◽  
Malpighian Tubules ◽  
Tibet Plateau ◽  
The Tibetan Plateau ◽  
Anaplasma Ovis ◽  
Dermacentor Everestianus ◽  
Qinghai Tibet Plateau ◽  
Great Damage

The tick Dermacentor everestianus is widely distributed on the Tibetan Plateau of China, where adult ticks usually parasitize sheep, yaks and horses. D. everestianus is able to transmit many zoonotic pathogens, including Francisella tularensis, Anaplasma ovis and Rickettsia raoultii-like bacteria, and can cause great damage to animals and human health. However, the symbionts in D. everestianus have not yet been investigated, which has hindered our understanding of the relationships between this tick species and associated tick-borne pathogens. In the current study, the Rickettsia-like and Coxiella-like symbionts in D. everestianus were identified and characterized. The results indicated that both Rickettsia-like (RLS-Des) and Coxiella-like (CLS-Des) symbionts showed 100% infection rates and displayed vertical transmission in D. everestianus. The RLS-Des showed a relatively higher abundance than the CLS-Des in D. everestianus. No tissue specificity was found for the RLS-Des or CLS-Des. These symbionts can inhabit the ovaries, salivary glands, midguts, Malpighian tubules and testes of D. everestianus. During the development of D. everestianus, the density of the RLS-Des showed more obvious changes than did that of the CLS-Des. Dramatic changes in the density of the RLS-Des were detected in the midguts, ovaries, salivary glands and Malpighian tubules when female D. everestianus were engorged and detached from the host, which suggested the potential role of these symbionts in the reproduction and development of D. everestianus. The dynamic changes in the density of the CLS-Des during feeding and reproduction of D. everestianus suggest the involvement of the CLS-Des in the reproduction of D. everestianus. 

scholarly journals Phylogenetic relationship and characterization of the complete chloroplast genome of the alpine leaf-warbler in Qinghai-Tibet Plateau

2019 ◽  
Vol 4 (2) ◽  
pp. 3582-3584
Author(s):  
Zhenhao Liu ◽  
Jinlong Liu ◽  
Xiangwu Chen ◽  
Zhenyu Jin ◽  
An Luo ◽  
...  
Keyword(s):  
Chloroplast Genome ◽  
Phylogenetic Relationship ◽  
Tibet Plateau ◽  
Complete Chloroplast Genome ◽  
Qinghai Tibet Plateau
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