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The distribution of wildlife parasites in a landscape is intimately tied to the spatial distribution of hosts. In parasite
species, including many gastrointestinal parasites, with obligate or common environmental life stages, the dynamics of the
parasite can also be strongly affected by geophysical components of the environment. This is especially salient in host species,
for example humans and macaques, which thrive across a wide variety of habitat types and quality and so are exposed to a wealth
of environmentally resilient parasites. Here, we examine the effect of environmental and anthropogenic components of the landscape
on the prevalence, intensity, and species diversity of gastrointestinal parasites across a metapopulation of long-tailed macaques
on the island of Bali, Indonesia. Using principal-components analysis, we identified significant interaction effects between
specific environmental and anthropogenic components of the landscape, parsing the Balinese landscape into anthropogenic (PC1),
mixed environment (PC2), and non-anthropogenic (PC3) components. Further, we determined that the anthropogenic environment
can mitigate the prevalence and intensity of specific gut parasites and the intensity of the overall community of gut parasites,
but that non-anthropogenically driven landscape components have no significant effect in increasing or reducing the intensity
or prevalence of the community of gut parasites in Balinese macaques. 相似文献
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Christian Gortazar Leslie A. Reperant Thijs Kuiken José de la Fuente Mariana Boadella Beatriz Martínez-Lopez Francisco Ruiz-Fons Agustin Estrada-Pe?a Christian Drosten Graham Medley Richard Ostfeld Townsend Peterson Kurt C. VerCauteren Christian Menge Marc Artois Constance Schultsz Richard Delahay Jordi Serra-Cobo Robert Poulin Frederic Keck Alonso A. Aguirre Heikki Henttonen Andrew P. Dobson Susan Kutz Juan Lubroth Atle Mysterud 《PLoS pathogens》2014,10(6)
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The dinuclear V(V) complexes (VOL)2O (L = SAE (1), SAMP (2), SAP (3)) have been synthesized from VO(acac)2 and the corresponding tridentate ligands LH2 in methanol under reflux conditions and subsequent air oxidation in organic solvent. They have been characterized by IR and NMR spectroscopy, by thermogravimetric analysis, and by single crystal X-ray diffraction for 1 and 2. DFT calculations were carried out for a better understanding of the vibrational pattern, principally the V-O related vibrations. Complex [VO(SAP)]2O (3) catalyzes the epoxidation of cyclooctene by TBHP in water in the absence of any added solvent with good selectivity. 相似文献
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Fuentes A 《American journal of primatology》2011,73(3):233-237
The emerging manifesto, center of the essay collection this commentary is part of, points out that primatology is a primate's science and field of endeavor. It is about primates, and constructed and carried out by primates. But the relationships between different primates involved in primatology cannot be described merely as scientific, zoological, or conservatory. A main point emerging from this perspective is that the relationships amongst primates (as scientists and as subjects) are affected by primatologists' experiences outside of academic science and within the cultural schema that we acquire as members of human societies. My contribution focuses on the primatologists and their sometimes discussed, but too often ignored, cultural and ethnic contexts as influences on how they study, think about, and interact with other primates. In our views and bonds with other primates, do national, class, and ethnic factors count? 相似文献
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All-optical histology using ultrashort laser pulses 总被引:10,自引:0,他引:10
Tsai PS Friedman B Ifarraguerri AI Thompson BD Lev-Ram V Schaffer CB Xiong Q Tsien RY Squier JA Kleinfeld D 《Neuron》2003,39(1):27-41
As a means to automate the three-dimensional histological analysis of brain tissue, we demonstrate the use of femtosecond laser pulses to iteratively cut and image fixed as well as fresh tissue. Cuts are accomplished with 1 to 10 microJ pulses to ablate tissue with micron precision. We show that the permeability, immunoreactivity, and optical clarity of the tissue is retained after pulsed laser cutting. Further, samples from transgenic mice that express fluorescent proteins retained their fluorescence to within microns of the cut surface. Imaging of exogenous or endogenous fluorescent labels down to 100 microm or more below the cut surface is accomplished with 0.1 to 1 nJ pulses and conventional two-photon laser scanning microscopy. In one example, labeled projection neurons within the full extent of a neocortical column were visualized with micron resolution. In a second example, the microvasculature within a block of neocortex was measured and reconstructed with micron resolution. 相似文献