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Tian L.,Beijing Forestry University | Zhou X.,Beijing Forestry University | Shi Y.,Beijing Wildlife Rescue and Rehabilitation Center | Guo Y.,Beijing Forestry University | Bao W.,Beijing Forestry University
Integrative Zoology

The loss of biodiversity from urbanized areas is a major environmental problem challenging policy-makers throughout the world. Solutions to this problem are urgently required in China. We carried out a case study of wintering long-eared owls (Asio otus) and their main prey to illustrate the negative effects of urbanization combined with ineffective conservation of biodiversity in Beijing. Field monitoring of owl numbers at two roosting sites from 2004 to 2012 showed that the owl population had fallen rapidly in metropolitan Beijing. Analysis of pellet contents identified only seven individuals of two species of shrew. The majority of mammalian prey comprised four bat and seven rodent species, making up 29.3% and 29.5% of the prey items, respectively. Prey composition varied significantly among years at the two sample sites. At the urban site the consumption of bats and rodents declined gradually over time, while predation on birds increased. In contrast, at the suburban site the prey composition showed an overall decrease in the number of bats, a sharp increase and a subsequent decrease in bird prey, and the number of rodent prey fell to a low point. Rapid development of real estate and inadequate greenfield management in city parks resulted in negative effects on the bird and small mammal habitat of urban areas in Beijing. We suggest that measures to conserve biodiversity should be integrated into future urban planning to maintain China's rich biodiversity while also achieving sustainable economic development. © 2014 International Society of Zoological Sciences, Institute of Zoology/Chinese Academy of Sciences and Wiley Publishing Asia Pty Ltd. Source

Li Y.,Beijing Forestry University | Yuan L.,Chongqing Zoo | Shi Y.,Beijing Wildlife Rescue and Rehabilitation Center | Zhang Z.-M.,Beijing Wildlife Rescue and Rehabilitation Center | And 3 more authors.
Beijing Linye Daxue Xuebao/Journal of Beijing Forestry University

In order to figure out the status of biodiversity restoration and distribution characteristics, we applied ArcGIS 9.3 software system to establish a GIS database for the ecological distribution of 66 species of birds under state key protection belonging to nine orders, and analyzed the distribution trend at different periods. The results showed that the overall distribution of the rare birds was concentrated around original forests with high quality vegetation, reservoirs and big rivers in mountainous areas, city parks and woodlands with less human disturbance in plain areas; however, there was no distribution in farmland areas. Comparing the ecological distribution sites of birds under State Key Protection Class I before and after the 1990s, it was found that the distribution was sparse, but three new species appeared after the 1990s, namely Chinese merganser (Mergus squamatus), brown eared pheasant (Crossoptilon mantchuricum) and relict gull (Larus relictus). Furthermore, the distribution sites of previous threeorders expanded. The birds under State Key Protection Class II also had an expansion trend in distribution with two new species of the hazel grouse (Bonasa bonasia) and demoiselle crane (Grus virgo); however, the black tern (Chlidonias niger) and black-faced spoonbill (Platalea minor) could not be found. The above results revealed that there is a positive recover for the overall distribution of the rare birds with the restoration of forests and wetlands in Beijing. The fact that some species disappeared recently indicated that protection of the habitat of wildlife is still a long-term process of constructing ecological environment. The GIS database lays the groundwork for building the management platform of rare wild animal distributions in Beijing, and possesses the important applicable value for the measures of protecting the wild animal populations and their habitats at landscape level. ©, 2015, Beijing Forestry University. All right reserved. Source

Hu Y.,Hebei Normal University | Hu Y.,CAS Institute of Zoology | Liu P.-P.,CAS Institute of Zoology | Zhang Z.-M.,Beijing Wildlife Rescue and Rehabilitation Center | And 7 more authors.
Progress in Biochemistry and Biophysics

Better effective therapy for highly pathogenic influenza virus infection should consist of combinations of an effective antiviral agent and immunomodulatory agents to control viral replication and pulmonary injury, respectively. Here we evaluated the virus titres in different cells (A549 cells and MDCK cells) infected with influenza virus H5N1 by plaque assay with the various concentrations of Geldanamycin at different time points. The levels of proinflammatory cytokines from A549 cell infected with influenza virus H5N1 were detected by ELISA in the absence or presence of Geldanamycin. Our findings showed that Geldanamycin significantly inhibited influenza virus growth in MDCK cells and A549 cells(P < 0.01). However, influenza virus growth were not inhibited with Geldanamycin on 36 h and 48 h(P ≥ 0.05) after infection with influenza virus H5N1. Analysis of proinflammatory cytokines in Geldanamycin-treated A549 cells revealed significant reductions in IFN-α, TNF-α or IL-6 on 12 h and 24 h after infection with influenza virus H5N1 (P < 0.05). All the results indicated that Geldanamycin have the dual effect of combine antivirus with anti-inflammation, which provided the science data for the potential use of Geldanamycin as a novel, highly effective anti-influenza virus drug. Source

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