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Ailuropoda melanoleuca

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https://www.readbyqxmd.com/read/28780905/virome-comparisons-in-wild-diseased-and-healthy-captive-giant-pandas
#1
Wen Zhang, Shixing Yang, Tongling Shan, Rong Hou, Zhijian Liu, Wang Li, Lianghua Guo, Yan Wang, Peng Chen, Xiaochun Wang, Feifei Feng, Hua Wang, Chao Chen, Quan Shen, Chenglin Zhou, Xiuguo Hua, Li Cui, Xutao Deng, Zhihe Zhang, Dunwu Qi, Eric Delwart
BACKGROUND: The giant panda (Ailuropoda melanoleuca) is a vulnerable mammal herbivore living wild in central China. Viral infections have become a potential threat to the health of these endangered animals, but limited information related to these infections is available. METHODS: Using a viral metagenomic approach, we surveyed viruses in the feces, nasopharyngeal secretions, blood, and different tissues from a wild giant panda that died from an unknown disease, a healthy wild giant panda, and 46 healthy captive animals...
August 7, 2017: Microbiome
https://www.readbyqxmd.com/read/28768568/changes-in-urinary-androgen-concentration-indicate-that-male-giant-pandas-ailuropoda-melanoleuca-respond-to-impending-female-oestrus-during-and-outside-the-typical-spring-breeding-season
#2
Barbara L Gocinski, Katrina K Knott, Beth M Roberts, Janine L Brown, Carrie K Vance, Andrew J Kouba
Giant pandas have been described as mono-oestrus spring breeders, yet males exposed to aseasonal oestrous females in the autumn or winter exhibit breeding behaviours and interest in mating. In the present study, urinary androgens and sperm parameters were quantified for males exposed to females expressing oestrus during spring, autumn or winter to examine plasticity of reproductive seasonality in giant pandas. Monthly average androgen concentrations for two males exposed to females in either seasonal or aseasonal oestrus were greater (P<0...
August 3, 2017: Reproduction, Fertility, and Development
https://www.readbyqxmd.com/read/28700323/baylisascaris-schroederi-infection-in-giant-pandas-ailuropoda-melanoleuca-in-foping-national-nature-reserve-china
#3
Zhiwei Peng, Changsheng Zhang, Meiying Shen, Heng Bao, Zhijun Hou, Shaowen He, Yuping Hua
The giant panda (Ailuropoda melanoleuca) is the most iconic endangered species in the world, but there is little information about the spatial and temporal distribution of parasites in the wild giant panda population. In total, 193 fecal samples from giant pandas in the Foping National Nature Reserve, People's Republic of China, were analyzed for parasite eggs using a modification of the McMaster technique. The morphology and size of Baylisascaris schroederi eggs were observed under an optical microscope. The prevalence and intensity of B...
July 12, 2017: Journal of Wildlife Diseases
https://www.readbyqxmd.com/read/28616195/assessing-vulnerability-of-giant-pandas-to-climate-change-in-the-qinling-mountains-of-china
#4
Jia Li, Fang Liu, Yadong Xue, Yu Zhang, Diqiang Li
Climate change might pose an additional threat to the already vulnerable giant panda (Ailuropoda melanoleuca). Effective conservation efforts require projections of vulnerability of the giant panda in facing climate change and proactive strategies to reduce emerging climate-related threats. We used the maximum entropy model to assess the vulnerability of giant panda to climate change in the Qinling Mountains of China. The results of modeling included the following findings: (1) the area of suitable habitat for giant pandas was projected to decrease by 281 km(2) from climate change by the 2050s; (2) the mean elevation of suitable habitat of giant panda was predicted to shift 30 m higher due to climate change over this period; (3) the network of nature reserves protect 61...
June 2017: Ecology and Evolution
https://www.readbyqxmd.com/read/28615713/exosomal-micrornas-in-giant-panda-ailuropoda-melanoleuca-breast-milk-potential-maternal-regulators-for-the-development-of-newborn-cubs
#5
Jideng Ma, Chengdong Wang, Keren Long, Hemin Zhang, Jinwei Zhang, Long Jin, Qianzi Tang, Anan Jiang, Xun Wang, Shilin Tian, Li Chen, Dafang He, Desheng Li, Shan Huang, Zhi Jiang, Mingzhou Li
The physiological role of miRNAs is widely understood to include fine-tuning the post-transcriptional regulation of a wide array of biological processes. Extensive studies have indicated that exosomal miRNAs in the bodily fluids of various organisms can be transferred between living cells for the delivery of gene silencing signals. Here, we illustrated the expression characteristics of exosomal miRNAs in giant panda breast milk during distinct lactation periods and highlighted the enrichment of immune- and development-related endogenous miRNAs in colostral and mature giant panda milk...
June 14, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28614359/phenological-changes-in-bamboo-carbohydrates-explain-the-preference-for-culm-over-leaves-by-giant-pandas-ailuropoda-melanoleuca-during-spring
#6
Katrina K Knott, Amelia L Christian, Josephine F Falcone, Carrie K Vance, Laura L Bauer, George C Fahey, Andrew J Kouba
Seasonal changes in the foodscape force herbivores to select different plant species or plant parts to meet nutritional requirements. We examined whether the search for calorie-rich carbohydrates explained giant panda's selection for bamboo culm over leaves during spring. Leaves and culms were collected from four Phyllostachys bamboos (P. aurea, P. aureosulcata, P. glauca, and P. nuda) once per month over 18-27 months. Monthly changes in annual plant part nutrients were examined, and compared to seasonal foraging behaviors of captive giant pandas...
2017: PloS One
https://www.readbyqxmd.com/read/28611401/a-diet-diverse-in-bamboo-parts-is-important-for-giant-panda-ailuropoda-melanoleuca-metabolism-and-health
#7
Hairui Wang, Heju Zhong, Rong Hou, James Ayala, Guangmang Liu, Shibin Yuan, Zheng Yan, Wenping Zhang, Yuliang Liu, Kailai Cai, Zhigang Cai, He Huang, Zhihe Zhang, De Wu
The aim of this study was to determine the metabolic response in giant pandas (Ailuropoda melanoleuca) to the consumption of certain parts of bamboo above ground growth. Giant pandas were provisioned with three species of bamboo: Phyllostachys bissetii, of which they only consume the culm (culm group); Bashania fargesii, of which they only consume the leaves (leaf group); and Qiongzhuea opienensis, of which they only consume the shoots (shoot group). The "culm" group absorbed the highest amount of calories and fiber, but was in short energy supply (depressed tricarboxylic acid cycle activity), and high fiber level diet might reduce the digestibility of protein...
June 13, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28454704/the-normal-vaginal-and-uterine-bacterial-microbiome-in-giant-pandas-ailuropoda-melanoleuca
#8
Xin Yang, Guangyang Cheng, Caiwu Li, Jiang Yang, Jianan Li, Danyu Chen, Wencheng Zou, SenYan Jin, Hemin Zhang, Desheng Li, Yongguo He, Chengdong Wang, Min Wang, Hongning Wang
While the health effects of the colonization of the reproductive tracts of mammals by bacterial communities are widely known, there is a dearth of knowledge specifically in relation to giant panda microbiomes. In order to investigate the vaginal and uterine bacterial diversity of healthy giant pandas, we used high-throughput sequence analysis of portions of the 16S rRNA gene, based on samples taken from the vaginas (GPV group) and uteri (GPU group) of these animals. Results showed that the four most abundant phyla, which contained in excess of 98% of the total sequences, were Proteobacteria (59...
June 2017: Microbiological Research
https://www.readbyqxmd.com/read/28431316/pbdes-polybrominated-diphenyl-ethers-pose-a-risk-to-captive-giant-pandas
#9
Yi-Ping Chen, Ying-Juan Zheng, Qiang Liu, Aaron M Ellison, Yan Zhao, Qing-Yi Ma
The Qinling subspecies of giant panda (Ailuropoda melanoleuca qinlingensis), is highly endangered; fewer than 350 individuals still inhabit Qinling Mountains. Previous research revealed captive pandas were exposed to bromine, so we hypothesized that captive pandas were exposed to and affected by polybrominated diphenyl ethers (PBDEs). To test this hypothesis, we tested blood and feces of captive and wild pandas, their drinking water, food (bamboo leaves) from SWARC (Shaanxi Wild Animal Research Center)and FNNR (Foping National Nature Reserve) and supplemental feedstuff given to captive panda at SWARC...
July 2017: Environmental Pollution
https://www.readbyqxmd.com/read/28428848/modeling-activity-patterns-of-wildlife-using-time-series-analysis
#10
Jindong Zhang, Vanessa Hull, Zhiyun Ouyang, Liang He, Thomas Connor, Hongbo Yang, Jinyan Huang, Shiqiang Zhou, Zejun Zhang, Caiquan Zhou, Hemin Zhang, Jianguo Liu
The study of wildlife activity patterns is an effective approach to understanding fundamental ecological and evolutionary processes. However, traditional statistical approaches used to conduct quantitative analysis have thus far had limited success in revealing underlying mechanisms driving activity patterns. Here, we combine wavelet analysis, a type of frequency-based time-series analysis, with high-resolution activity data from accelerometers embedded in GPS collars to explore the effects of internal states (e...
April 2017: Ecology and Evolution
https://www.readbyqxmd.com/read/28306740/metabolic-rate-of-the-red-panda-ailurus-fulgens-a-dietary-bamboo-specialist
#11
Yuxiang Fei, Rong Hou, James R Spotila, Frank V Paladino, Dunwu Qi, Zhihe Zhang
The red panda (Ailurus fulgens) has a similar diet, primarily bamboo, and shares the same habitat as the giant panda, Ailuropoda melanoleuca. There are considerable efforts underway to understand the ecology of the red panda and to increase its populations in natural reserves. Yet it is difficult to design an effective strategy for red panda reintroduction if we do not understand its basic biology. Here we report the resting metabolic rate of the red panda and find that it is higher than previously measured on animals from a zoo...
2017: PloS One
https://www.readbyqxmd.com/read/28281076/withered-on-the-stem-is-bamboo-a-seasonally-limiting-resource-for-giant-pandas
#12
Youxu Li, Ronald R Swaisgood, Wei Wei, Yonggang Nie, Yibo Hu, Xuyu Yang, Xiaodong Gu, Zejun Zhang
In response to seasonal variation in quality and quantity of available plant biomass, herbivorous foragers may alternate among different plant resources to meet nutritional requirements. Giant pandas (Ailuropoda melanoleuca) are reliant almost exclusively on bamboo which appears omnipresent in most occupied habitat, but subtle temporal variation in bamboo quality may still govern foraging strategies, with population-level effects. In this paper, we investigated the possibility that temporal variation in the quality of this resource is involved in population regulation and examined pandas' adaptive foraging strategies in response to temporal variation in bamboo quality...
April 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28206772/cytotoxic-fusicoccane-type-diterpenoids-from-streptomyces-violascens-isolated-from-ailuropoda-melanoleuca-feces
#13
Dan Zheng, Li Han, Xiaodan Qu, Xiu Chen, Jialiang Zhong, Xiaoxu Bi, Jiang Liu, Yi Jiang, Chenglin Jiang, Xueshi Huang
Six new fusicoccane-type diterpenoids (2-7) were isolated from the fermentation broth of Streptomyces violascens, which was isolated from Ailuropoda melanoleuca (giant panda) feces. The structures of these new compounds were elucidated by a detailed spectroscopic data and X-ray crystallographic analysis. Compounds 5-7 demonstrated cytotoxicity against five human cancer cell lines, with IC50 values ranging from 3.5 ± 0.7 to 14.1 ± 0.8 μM. Cell adhesion, migration, and invasion assays showed that 6 inhibited the migration and invasion of human hepatocellular carcinoma SMMC7721 cells in a dose-dependent manner...
April 28, 2017: Journal of Natural Products
https://www.readbyqxmd.com/read/28128409/analysis-of-the-cytochrome-c-oxidase-subunit-ii-cox2-gene-in-giant-panda-ailuropoda-melanoleuca
#14
S S Ling, Y Zhu, D Lan, D S Li, H Z Pang, Y Wang, D Y Li, R P Wei, H M Zhang, C D Wang, Y D Hu
The giant panda, Ailuropoda melanoleuca (Ursidae), has a unique bamboo-based diet; however, this low-energy intake has been sufficient to maintain the metabolic processes of this species since the fourth ice age. As mitochondria are the main sites for energy metabolism in animals, the protein-coding genes involved in mitochondrial respiratory chains, particularly cytochrome c oxidase subunit II (COX2), which is the rate-limiting enzyme in electron transfer, could play an important role in giant panda metabolism...
January 23, 2017: Genetics and Molecular Research: GMR
https://www.readbyqxmd.com/read/28107477/effects-of-ambient-environmental-factors-on-the-stereotypic-behaviors-of-giant-pandas-ailuropoda-melanoleuca
#15
He Liu, Hejun Duan, Cheng Wang
Stereotypies are commonly observed in zoo animals, and it is necessary to better understand whether ambient environmental factors contribute to stereotypy and how to affect animal welfare in zoo settings. This study investigated the relationships between stereotypic behaviors and environmental factors including ambient temperatures, humidity, light intensity, sound intensity and number of visitors. Seven giant pandas were observed in three indoor enclosures and three outdoor enclosures. Environmental factors were measured for both indoor and outdoor enclosures and the effect they had on stereotypical behaviors was investigated...
2017: PloS One
https://www.readbyqxmd.com/read/28096377/comparative-genomics-reveals-convergent-evolution-between-the-bamboo-eating-giant-and-red-pandas
#16
Yibo Hu, Qi Wu, Shuai Ma, Tianxiao Ma, Lei Shan, Xiao Wang, Yonggang Nie, Zemin Ning, Li Yan, Yunfang Xiu, Fuwen Wei
Phenotypic convergence between distantly related taxa often mirrors adaptation to similar selective pressures and may be driven by genetic convergence. The giant panda (Ailuropoda melanoleuca) and red panda (Ailurus fulgens) belong to different families in the order Carnivora, but both have evolved a specialized bamboo diet and adaptive pseudothumb, representing a classic model of convergent evolution. However, the genetic bases of these morphological and physiological convergences remain unknown. Through de novo sequencing the red panda genome and improving the giant panda genome assembly with added data, we identified genomic signatures of convergent evolution...
January 31, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28039891/atmospheric-deposition-exposes-qinling-pandas-to-toxic-pollutants
#17
Yi-Ping Chen, Ying-Juan Zheng, Qiang Liu, Yi Song, Zhi-Sheng An, Qing-Yi Ma, Aaron M Ellison
The giant panda (Ailuropoda melanoleuca) is one of the most endangered animals in the world, and it is recognized worldwide as a symbol for conservation. A previous study showed that wild and captive pandas, especially those of the Qinling subspecies, were exposed to toxicants in their diet of bamboo; the ultimate origin of these toxicants is unknown. Here we show that atmospheric deposition is the most likely origin of heavy metals and persistent organic pollutants (POPs) in the diets of captive and wild Qinling pandas...
December 31, 2016: Ecological Applications: a Publication of the Ecological Society of America
https://www.readbyqxmd.com/read/27808224/changeover-from-signalling-to-energy-provisioning-lipids-during-transition-from-colostrum-to-mature-milk-in-the-giant-panda-ailuropoda-melanoleuca
#18
Tong Zhang, David G Watson, Rong Zhang, Rong Hou, I Kati Loeffler, Malcolm W Kennedy
Among the large placental mammals, ursids give birth to the most altricial neonates with the lowest neonatal:maternal body mass ratios. This is particularly exemplified by giant pandas. To examine whether there is compensation for the provision of developmentally important nutrients that other species groups may provide in utero, we examined changes in the lipids of colostrum and milk with time after birth in giant pandas. Lipids that are developmental signals or signal precursors, and those that are fundamental to nervous system construction, such as docosahexaenoic acid (DHA) and phosphatidylserines, appear early and then fall dramatically in concentration to a baseline at 20-30 days...
November 3, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27706659/molecular-cloning-overexpression-purification-and-sequence-analysis-of-the-giant-panda-ailuropoda-melanoleuca-ferritin-light-polypeptide
#19
L Fu, Y L Hou, X Ding, Y J Du, H Q Zhu, N Zhang, W R Hou
The complementary DNA (cDNA) of the giant panda (Ailuropoda melanoleuca) ferritin light polypeptide (FTL) gene was successfully cloned using reverse transcription-polymerase chain reaction technology. We constructed a recombinant expression vector containing FTL cDNA and overexpressed it in Escherichia coli using pET28a plasmids. The expressed protein was then purified by nickel chelate affinity chromatography. The cloned cDNA fragment was 580 bp long and contained an open reading frame of 525 bp. The deduced protein sequence was composed of 175 amino acids and had an estimated molecular weight of 19...
August 30, 2016: Genetics and Molecular Research: GMR
https://www.readbyqxmd.com/read/27703267/dietary-resources-shape-the-adaptive-changes-of-cyanide-detoxification-function-in-giant-panda-ailuropoda-melanoleuca
#20
He Huang, Shangmian Yie, Yuliang Liu, Chengdong Wang, Zhigang Cai, Wenping Zhang, Jingchao Lan, Xiangming Huang, Li Luo, Kailai Cai, Rong Hou, Zhihe Zhang
The functional adaptive changes in cyanide detoxification in giant panda appear to be response to dietary transition from typical carnivore to herbivorous bear. We tested the absorption of cyanide contained in bamboo/bamboo shoots with a feeding trial in 20 adult giant pandas. We determined total cyanide content in bamboo shoots and giant panda's feces, levels of urinary thiocyanate and tissue rhodanese activity using color reactions with a spectrophotometer. Rhodanese expression in liver and kidney at transcription and translation levels were measured using real-time RT-PCR and immunohistochemistry, respectively...
October 5, 2016: Scientific Reports
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