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black-necked crane

Wei Liu, Yongjie Wu, Shane G DuBay, Chenhao Zhao, Bin Wang, Jianghong Ran
Variation in grassland vegetation structure influences the habitat selection of insectivorous birds. This variation presents a trade-off for insectivorous predators: Arthropod abundance increases with vegetation height and heterogeneity, but access to arthropod prey items decreases. In contrast, grazing by large herbivores reduces and homogenizes vegetation, decreasing total arthropod abundance and diversity. However, the presence of livestock dung may help counteract the overall reduction in invertebrates by increasing arthropods associated with dung...
February 2019: Ecology and Evolution
Judith M Graber, Gerald Harris, Kathleen Black, Roberto G Lucchini, Christopher R Dasaro, Michael B Steinberg, Anna R Giuliano, Michael A Crane, Jacqueline M Moline, Denise J Harrison, Benjamin J Luft, Andrew C Todd, Iris G Udasin
The World Trade Center (WTC) attacks exposed rescue and recovery workers to a complex mix of toxicants, including carcinogens. This study compared site-specific cancer incidence of head and neck cancers (HNC) from 2003 through 2012 among 33,809 consented WTC General Responder Cohort (GRC) members to the New Jersey State Cancer Registry, using standardized incidence ratios (SIRs). HNC grouped using SEER ICD-O-3 codes into HPV-related (oropharyngeal) and non-related (other oral-nasal; laryngeal) tumors based on anatomical site...
December 17, 2018: International Journal of Cancer. Journal International du Cancer
Dejun Kong, Weixiong Luo, Qiang Liu, Zhuoqing Li, Guoyue Huan, Jianjun Zhang, Xiaojun Yang
Understanding the habitat use and spatial distribution of wildlife can help conservationists determine high-priority areas and enhance conservation efforts. We studied the wintering habitat use, preference, and utilization distribution of two crane species, that is, the black-necked crane ( Grus nigricollis , Przevalski, 1876) and common crane ( Grus grus , Linnaeus, 1758), in Huize National Natural Reserve, Yunnan-Guizhou Plateau, southwestern China. Line transects indicated that anthropogenic farmland habitat was highly utilized and was positively selected by both crane species (>90% of flocks observed for both species)...
2018: PeerJ
Yu Liang, ZiJiao Zhao, JunJie Hu, Gerald W Esch, MingChun Peng, Qiong Liu, JinQing Chen
Disseminated visceral coccidiosis (DVC) is a widely distributed intestinal and extraintestinal disease of cranes caused by eimeriid coccidia and has lethal pathogenicity to several crane species. Here, feces of 164 black-necked cranes collected in Dashanbao Black-necked Crane National Nature Reserve, China, were examined to determine the prevalence of coccidial oocysts. Of the 164 fecal samples, 76 (46.3%) were positive for oocysts of Eimeria, including E. gruis in 59 (35.9%), E. reichenowi in 52 (31.7%), and E...
March 2018: Parasitology Research
Zhongqiu Li, Ye Che, Le Yang
Sequential randomness is one of the three important assumptions for Pulliam's vigilance model (1973). Here we tested the sequential randomness in Black-necked cranes Grus nigricollis, to see if the vigilance sequence can be predicted. Not similar to other recent studies, we found that most vigilance sequences (44/46) passed runs randomness test, and the length of an inter-scan interval was usually unrelated to its previous scan duration. Our findings suggest high predation risk might favor a random pattern of vigilance...
December 2017: Behavioural Processes
Xuesong Han, Yumin Guo, Chunrong Mi, Falk Huettmann, Lijia Wen
The black-necked crane (Grus nigricollis) is the only alpine crane species and is endemic to the Tibetan Plateau. The breeding habitats of this species are poorly understood, which greatly hampers practical research and conservation work. Using machine learning methods and the best-available data from our 7,000-kilometer mega-transect survey and open access data, we built the first species distribution model (SDM) to analyze the black-necked crane's breeding habitats. Our model showed that current conservation gaps account for 26...
July 21, 2017: Scientific Reports
Lixun Zhang, Bei An, Meilin Shu, Xiaojun Yang
We investigated population dynamics, breeding pairs, breeding habitat selection, nest density, distance between neighboring nests, nest survival, reproductive success, and recruitment rate for Black-necked Cranes (BNC, Grus nigricollis) during 2013-2015 in Yanchiwan National Nature Reserve (YCW), Gansu, China. Numbers of BNC and breeding pairs remained relatively stable at around 140 individuals and 40 pairs. Recruitment rates ranged from 15.7% to 25.8%. The average nest distance was 718.66 ± 430.50 m (2013), 1064...
2017: PeerJ
Chunrong Mi, Falk Huettmann, Yumin Guo, Xuesong Han, Lijia Wen
Species distribution models (SDMs) have become an essential tool in ecology, biogeography, evolution and, more recently, in conservation biology. How to generalize species distributions in large undersampled areas, especially with few samples, is a fundamental issue of SDMs. In order to explore this issue, we used the best available presence records for the Hooded Crane (Grus monacha, n = 33), White-naped Crane (Grus vipio, n = 40), and Black-necked Crane (Grus nigricollis, n = 75) in China as three case studies, employing four powerful and commonly used machine learning algorithms to map the breeding distributions of the three species: TreeNet (Stochastic Gradient Boosting, Boosted Regression Tree Model), Random Forest, CART (Classification and Regression Tree) and Maxent (Maximum Entropy Models)...
2017: PeerJ
Shoichi Emura
The dorsal lingual surface of the grey crowned crane (Balearica regulorum), American flamingo (Phoenicopterus rubber), great egret (Ardea alba), mallard (Anas platyrhynchos), Himalayan monal (Lophophorus impejanus), black-necked stilt (himantopus mexicanus) and green macaw (Ara militaris) were examined by scanning electron microscopy. In the grey crowned crane, the surface of the lingual apex was relatively rough. Many openings of the lingual glands in both lateral regions of the lingual body were observed...
2016: Okajimas Folia Anatomica Japonica
Hao Yan Dong, Guang Yi Lu, Xing Yao Zhong, Xiao Jun Yang
The Black-necked Crane Grus nigricollis is a globally vulnerable species whose food is the factor determining its long-term survival. Understanding dietary habits, food preferences, and related factors will facilitate the development of effective conservation plans for the protection of this vulnerable species. For this purpose, we used video recordings and sampling of food availability to examine the dietary composition and temporal variation in food selection of Black-necked Cranes wintering in the Dashanbao National Nature Reserve, China...
2016: PeerJ
Rinchen Namgay, Sangay Wangchuk
Black-necked Crane (Grus nigricollis) is a vulnerable Red list species whose populations are declining. However, little is known about Black-necked Cranes' habitat requirements or the causes of their population decline. We identified Black-necked Cranes' winter roost and foraging preferences of Black-necked Cranes in Bhutan during the winter of 2013-2014. Black-necked Cranes' roosts were recorded using Garmin GPSmap 60CSx, while foraging preferences and threats to the birds were identified based on a survey of household heads (n = 107) residing within a 3 km radius of roost sites...
2016: SpringerPlus
Junpei Zhou, Lu Pan, Junjun Li, Xianghua Tang, Zunxi Huang
OBJECTIVE: Cloning and heterologously expressing the alpha-galactosidase gene (agaAGN14) from Arthrobacter sp. GN14 isolated from feces of black-neck crane (Grus nigricollis). METHODS: The full-length agaAGN14 was cloned based on degenerate PCR and GC TAIL-PCR (thermal asymmetric interlaced PCR), ligated into pET-28a (+) vector and expressed in Escherichia coli BL21 (DE3) cells. The recombinant alpha-galactosidase (rAgaAGN14) was purified to electrophoretic homogeneity by Ni(2+)-NTA metal chelating affinity chromatography, and then the enzyme characterizations were determined...
May 4, 2012: Wei Sheng Wu Xue Bao, Acta Microbiologica Sinica
Peng He, De-Jun Kong, Qiang Liu, Hong-Zhong Yu, Jian-Lin Zhao, Xiao-Jun Yang
From November 2009 to April 2010, roosting-site characteristics of black-necked cranes (Grus nigricollis) were observed at Napahai Provincial Nature Reserve, Shangri-La, Yunnan, China. The positions of roosting-sites were determined by triangulation with markers and field correction. All of the 63 roosting-sites observed were located in patchy marshes with water, which contained some mud on the bottom and 81% of the roosting-sites were covered by plants. They also had a certain distance to areas of human activities and had a certain distance to the shore...
April 2011: Dong Wu Xue Yan Jiu, Zoological Research
Anna Słodkowicz-Kowalska
The main objective of the present study was to determined the occurrence of Encephalitozoon intestinalis, E. hellem, E. cuniculi, and Enterocytozoon bieneusi in Poland in animal faecal using the FISH (Fluorescent In Situ Hybridization) and multiplex FISH techniques. Additional objectives included: (1) identification of animal hosts of microsporidia that are infectious to humans amongst free-ranging, captive, livestock and domestic animals; (2) a molecular analysis of randomly selected parasite isolates and determination of their zoonotic potential; (3) evaluation of the role of animals in the dissemination of microsporidia spores in the environment, and an estimation of the potential risk of infection for other animals and humans...
2009: Wiadomości Parazytologiczne
H C Dessauer, G F Gee, J S Rogers
Electrophoretic analysis of proteins yielded evidence on the relationships of species of cranes and on genetic diversity within populations of some species. Diversity within the Greater Sandhill crane and a Florida population of the Florida Sandhill crane was similar to that of most other vertebrates, but diversity was low in the Mississippi Sandhill crane, in the Okefenokee population of the Florida Sandhill crane, and within the Siberian and Sarus cranes. Diversity was surprisingly high among whooping cranes, whose number dropped to less than 25 early in this century...
December 1992: Molecular Phylogenetics and Evolution
M H Maxwell
The fine structure of the granules of circulating eosinophil leucocytes was studied in five adult black-necked crowned cranes. The interna within these granules showed various crystalline arrangements. Optical diffraction patterns of the crystals revealed linear arrangements measuring 6.2 and 3.8 nm and often, when these arrangements were superimposed, a hexagonal pattern was observed. Bundles of microfilaments measuring 5-7 nm in diameter were found frequently in crystal-containing granules. Staining with phosphotungstic acid (PTA) and various other cytochemical procedures gave results similar to those obtained previously in the shag and the duck...
January 1979: Journal of Anatomy
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