A new synonym of Ptilagrostis yadongensis and a new record of Stipa bhutanica to the flora of China (Poaceae)

Phytotaxa ◽  
2016 ◽  
Vol 272 (1) ◽  
pp. 94 ◽  
Author(s):  
ZHONG-SHUAI ZHANG ◽  
XIANG-YUN ZHU ◽  
LING-LU LI ◽  
SHAN-WEN JIANG ◽  
WEN-LI CHEN

Ptilagrostis Grisebach (1852: 447) is a small genus of the grass family, including approximately 11 species (Wu & Phillips 2006, Barkworth 2007). It occurs in both Asia and North America with about eight species distributed in Qinghai-Tibet Plateau, its diversity center. Ptilagrostis yadongensis Keng & Tang (1985: 44) is one of the species that occurs in this region, which was described based on materials from Yadong, China, the southern slope of Himalayas. The paper was published in a Chinese journal, viz. Journal of Southwest Agriculural University, and had not been noticed until 2005 (Peterson et al. 2005, Wu & Phillips 2006). The author pointed out that P. yadongensis is distinguished from its morphological close, Ptilagrostis concinna (Hooker 1897: 230) Roshevitz (1934: 75) by linear panicles with fewer spikelets, longer and unequal glumes, and shorter and glabrous anthers.

2019 ◽  
Author(s):  
Xiao-Xia Zhang ◽  
Jian-Fei Ye ◽  
Shawn W. Laffan ◽  
Brent D. Mishler ◽  
Andrew H. Thornhill ◽  
...  

Abstract Background The flora of China is well known for its high endemism. Identifying centers of endemism and designating conservation priorities for the Chinese flora are essential goals for biodiversity studies. We used a phylogeny that included 2,909 Chinese angiosperm genera and 1.39 million spatial distribution records to conduct spatial phylogenetics analyses. Then, we identified centers of neo- and paleo-endemism in the Chinese angiosperm flora using spatial phylogenetic methods. Phylogenetic endemism centers were compared with taxonomic endemism centers, and their implications for conservation were examined. Results (1) The majority of grid cells with significant phylogenetic endemism (PE) were dominated by mixed- or super-endemism in China, but only one grid cell dominated by neo-endemism was located in the Qinghai–Tibet Plateau. (2) Ten geographic centers of grid cells with high PE were identified. Four of these found in northern China are recognized for the first time here. (3) Arid and semiarid regions were commonly linked to PE centers in both our study and other spatial phylogenetics studies worldwide. (4) Five priority conservation gaps were detected by overlaying the boundaries of China’s nature reserves on these centers of endemism. Conclusions The spatial phylogenetics approach provides an evolutionary perspective to understanding the diversity and endemism patterns. These integrated methods are necessary for broad-scale conservation planning, especially when aiming to conserve evolutionary history.


Zootaxa ◽  
2019 ◽  
Vol 4646 (3) ◽  
pp. 598-600
Author(s):  
XIAOLI TONG ◽  
LIANGXIN LIU

The genus Yaothrips was erected by Mirab-balou et al. (2011a) based on four micropterous females of a new species, Y. shii, from China, Tibet. Subsequently, Mirab-balou et al. (2015) transferred to the genus Yaothrips a further species described from Tibet, Taeniothrips pediculae Han that had been based on two micropterous females. Moreover, these authors placed Y. shii as a new synonym of Y. pediculae. Mirab-balou et al. (2011b) also described as a new species from Tibet Pezothrips brunicornis, based on macropterae of both sexes. Recently we examined a collection of Y. pediculae from the Qinghai-Tibet Plateau, China, and this included two specimens of the previously unknown male. We studied the type specimens of P. brunicornis and found that the males of Y. pediculae and P. brunicornis are very similar. In particular, abdominal tergite IX bears a pair of short stout setae medially (Figs 7–8) and sternites III–VII have small scattered pore plates (Figs 5,9). Considering the similarities, the genus Yaothrips is here synonymized with Pezothrips, 


Biologia ◽  
2017 ◽  
Vol 72 (11) ◽  
Author(s):  
Wen Qin ◽  
Penghai Qiao ◽  
YanGan Huang ◽  
Gonghua Lin ◽  
Jianping Su ◽  
...  

AbstractA new species of


2021 ◽  
Vol 166 ◽  
pp. 104093
Author(s):  
Fei Peng ◽  
Wenjuan Zhang ◽  
Chimin Lai ◽  
Chengyang Li ◽  
Quangang You ◽  
...  

Author(s):  
Deyan Ge ◽  
Anderson Feijó ◽  
Zhixin Wen ◽  
Alexei V Abramov ◽  
Liang Lu ◽  
...  

Abstract For organisms to survive and prosper in a harsh environment, particularly under rapid climate change, poses tremendous challenges. Recent studies have highlighted the continued loss of megafauna in terrestrial ecosystems and the subsequent surge of small mammals, such as rodents, bats, lagomorphs, and insectivores. However, the ecological partitioning of these animals will likely lead to large variation in their responses to environmental change. In the present study, we investigated the evolutionary history and genetic adaptations of white-bellied rats (Niviventer Marshall, 1976), which are widespread in the natural terrestrial ecosystems in Asia but also known as important zoonotic pathogen vectors and transmitters. The southeastern Qinghai-Tibet Plateau (QHTP) was inferred as the origin center of this genus, with parallel diversification in temperate and tropical niches. Demographic history analyses from mitochondrial and nuclear sequences of Niviventer demonstrated population size increases and range expansion for species in Southeast Asia, and habitat generalists elsewhere. Unexpectedly, population increases were seen in N. eha, which inhabits the highest elevation among Niviventer species. Genome scans of nuclear exons revealed that among the congeneric species, N. eha has the largest number of positively selected genes. Protein functions of these genes are mainly related to olfaction, taste and tumor suppression. Extensive genetic modification presents a major strategy in response to global changes in these alpine species.


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