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991.
Jinshan Xu a b Tie Liu c Dong Li c Ze Zhang c Qinyou Xia c Zeyang Zhou a c a Laboratory of Animal Biology Chongqing Normal University Chongqing China b Engineering Research Center of Bioactive Substances China c Institute of Sericulture System Biology Southwest University Chongqing China 《Acta Genetica Sinica》2010,(2)
992.
Kimberly?A. Aldinger Stephen?J. Mosca Martine Tétreault Jennifer?C. Dempsey Gisele?E. Ishak Taila Hartley Ian?G. Phelps Ryan?E. Lamont Diana?R. O’Day Donald Basel Karen?W. Gripp Laura Baker Mark?J. Stephan Francois?P. Bernier Kym?M. Boycott Jacek Majewski University of Washington Center for Mendelian Genomics CareRare Canada Jillian?S. Parboosingh A.?Micheil Innes Dan Doherty 《American journal of human genetics》2014,95(2):227-234
993.
鳄蜥的食物识别机制 总被引:1,自引:0,他引:1
鳄蜥(Shinisaurus crocodilurus)食物识别机制的研究,对进一步了解鳄蜥的捕食行为和生态学习性有重要意义。使用棉棒分别沾上去离子水、香水、黄粉虫(Tenebriomolitor L.)和蚯蚓(Pheretima sp.)的气味(蚯蚓和黄粉虫处死后绞碎以便于棉花棒蘸上),观察11只鳄蜥对4种化学刺激的反应,每个个体对每种刺激均进行24次实验重复。实验结果显示:鳄蜥对4种刺激均有反应,对黄粉虫和蚯蚓刺激的舔舌次数显著高于香水和去离子水的舔舌次数(Wilcoxon test,所有P<0.001),表明鳄蜥能检测以及识别控制刺激和食物刺激。再又对鳄蜥进行4种处理实验:(A)空白对照;(B)蚯蚓气味;(C)密封着的活蚯蚓;(D)活蚯蚓。每个个体每种处理均进行5次实验。结果显示:鳄蜥在不同处理下的行为持续时间、探究频次和攻击频次有显著差异(Friedman test,所有P<0.001)。鳄蜥在仅有视觉刺激出现的处理C以及既有化学刺激又有视觉刺激的处理D比仅有化学刺激的处理B在持续时间、探究频次和攻击频次上显著要高(所有P<0.001)。在无视觉刺激的条件下,鳄蜥在处理B的行为持续时间以及探究频次均显著高于处理A 的(所有P<0.001);而在视觉信息相同的条件下,鳄蜥在处理D中仅行为持续时间显著高于处理C(Z=3.95, P<0.001),而探究频次以及攻击频次无显著差异(前者Z=1.53, P=0.13;后者Z=1.10, P=0.27)。结果表明鳄蜥主要利用视觉捕食,化学感觉有辅助作用。鳄蜥这种食物识别机制可能与捕食模式和种系发生有关,也可能受食物的影响。 相似文献
994.
Pingping QU Wenru TIAN Tao LI Zhongling JIANG Shansong GAO Zhongjie TIAN Mingzhi WANG College of Animal Science & Veterinary Medicine Qingdao Agricultural University Qingdao Sh ong China 《动物学报》2009,55(1)
Mouse early blastocysts were exposed to temporatures of 39℃ and 41℃ for 2 h,respectively,to determine their developmental competence and uhrastructural changes. The results showed that heat stress at 41 ℃ for 2 h,significantly reduced the percentages of expanded and hatched blastocysts,but not at 39℃ for 2 h. The average cell numbers in expanded blastocysts,which developed from early blastocysts heat-stressed at temperatures of 39℃ and 41 ℃,were significantly reduced. The average cell numbers in hatched blastocysts subjected to heat stress were no different from those in the control group cultured at 37℃ . The mitochondria of the early blastocysts heat-stressed at 39T℃ for 2 h,were slightly swollen,but they had recovered after culturing at 37℃ for 2 h. However,the mitochondria in the blastocysts heat stressed at 41 ℃ for 2 h were severely swollen,and their number increased. The ribosomes shed from the rough endoplasmic reticulum,and the number of secondary lysosomes in the plasma increased. The integrity of desmosomes was disrupted. The space between the nuclear envelope and the perivitelline membrane enlarged. The fibre fraction and the particulate fraction of nucleoli were separated. The heterochromatin in nucleoli was also increased in its quantity. There were some lamellar-shape structures and heterogeneous dense materials exhibiting in the cytoplasm. The ultrastructural changes induced by heat shock at 41 ℃ for 2 h were not reversible. In conclusion,the damage of heat stress to mitochondria,lysosomes,ribosomes and cell nucleus,may be one of the most important factors that inhibit the normal development of mouse early blastocysts. 相似文献
995.
We quantified microhabitat use by white-footed mice Peromyscus leucopus in forest and old-field habitats occupied by Morrow's honeysuckle Lonicera morrowii, an invasive exotic shrub imported from Japan. Microhabitat characteristics were compared between trails used by mice (n=124) and randomly selected trails (n=127) in 4 study plots located at Fort Necessity National Battlefield, Farmington, Pennsylvania, USA. We compared 10 microhabitat variables between used and random trails using non-metric multidimensional scaling (NMDS) and classification and regression tree (CART) analysis. Trails used by mice were statistically different from randomly selected trails in both forested plots (P<0.008) and old-field plots (P<0.001). In the forested plots, trails of white-footed mice were more often associated with a greater percent cover (% cover) of coarse woody debris (CWD) than were randomly selected trails. In the old-field plots, mouse trails were commonly characterized by having a lower % cover of exotic herbaceous vegetation, a greater % cover of shrubs, and a greater % cover of Morrow's honeysuckle than randomly selected trails. Our study indicates that white-footed mice do not move randomly and prefer areas of high structural complexity, thereby showing significant microhabitat preference. The preference of white-footed mice for areas with a relatively high percent cover of Morrow's honeysuckle could 1) be a factor in the aggressive nature of the exotic honeysuckle shrub's spread throughout the Battlefield or 2) cause the shrub to spread even faster into adjacent areas not yet occupied by Morrow's honeysuckle[Current Zoology 55(2):111-122,2009]. 相似文献
996.
Hong LI Zheng WANG Wenbin MEI Xiang JI .Jiangsu Key Laboratory for Biodiversity Biotechnology College of Life Sciences Nanjing Normal University Nanjing Jiangsu China.School of Life Sciences Hangzhou Normal University Hangzhou Zhejiang China 《动物学报》2009,55(4)
We acclimated adult males of three Eremias lizards from different latitudes to 28℃,33℃ or 38℃ to examine whether temperature acclimation affects their thermal preference and tolerance and whether thermal preference and tolerance of these lizards correspond with their latitudinal distributions.Overall,selected body temperature(Tsel)and viable temperature range(VTR)were both highest in E.brenchleyi and lowest in E.multiocellata,with E.argus in between;critical thermal minimum(CTMin)was highest in E.multiocell... 相似文献
997.
Fengqin HE Fadao TAI .College of Life Sciences Shaanxi Normal University Xi'an China 《动物学报》2009,55(4)
In order to investigate the neuroendocrine mechanism of the mating behavior in the adult male mandarin voles Microtus mandarinus,the radioimmunoassay(RIA)and immunohistochemistry methods were used to investigate the differences in plasma testosterone(T)concentrations and distribution of T immunoreactive neurons(T-IRs),androgen receptor immunoreactive neurons(AR-IRs)and Fos protein immunoreactive neurons(Fos-IRs)in the accessory olfactory bulb(AOB)and the main olfactory bulb(MOB)following exposure to clean h... 相似文献
998.
Xue YAO Hong-yan GUO Chang LIU Xuan XU Jian-sen DU Hao-yue LIANG Yun-qi GENG Wen-tao QIAO Nankai University Tianjin China . School of Medicine China) 《Virologica Sinica》2010,(2)
In order to quantitate the bovine immunodeficiency virus (BIV) infection in vitro, a BIV indicator cell line (BIVL) was established by transfecting baby hamster kidney cells with reporter plasmids containing the firefly luciferase gene driven by a BIV long terminal repeat promoter. The BIV activates promoter activity of the LTR to express luciferase upon infection. BIV infection could therefore by quantified by detection of luciferase activity. Compared to standard assays used to detect BIV infection, the B... 相似文献
999.
Peng-fei WEI Yan-jun LUO Tian-xian LI Hua-lin WANG Zhi-hong HU Fu-chun ZHANG Yu-jiang ZHANG Fei DENG Su-rong SUN 《Virologica Sinica》2010,(1)
The Crimean-congo hemorrhagic fever virus(CCHFV)is a geographically widespread fatal pathogen. Identification of the epitope regions of the virus is important for the diagnosis and epidemiological studies of CCHFV infections.In this study,expression vectors carrying series truncated fragments of the NP(nucleocapsid protein)gene from the S fragment of CCHFV strain YL04057 were constructed.The recombinant proteins were expressed in E.coli and purified for detection.The antigenic of the truncated fragments of ... 相似文献
1000.