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535 results for “scavenger”
Introduced wild pigs affect the foraging ecology of a native predator as both prey and scavenger
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Single molecule image sequences of Thermothielavioides terrestris AA9E (TtAA9E) on cellulose in oxygen scavenging systems
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Bait uptake by scavengers in tropical waterbodies
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Directed endozoochorous dispersal by scavengers facilitate sexual reproduction in otherwise clonal plants at cadaver sites
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Wildlife as sentinels of compliance with law: an example with GPS-tagged scavengers and sanitary regulations
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Urban scavenging: Vertebrates display greater sensitivity to land-cover and garden vegetation cover than invertebrates
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Data from: Dominant carnivore loss benefits native avian and invasive mammalian scavengers
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Data from: Phenotypic plasticity accounts for changes in plant phosphorus-acquisition strategies from mining to scavenging along a gradient of soil phosphorus availability in South American Campos grasslands
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7-O-Galloyltricetifavan: a promising natural radical scavenger
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Scavenger community and carrion decomposition in a Tibetan alpine meadow
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Vulture culture: dietary specialization of an obligate scavenger
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Scavengers in the human-dominated landscape dataset
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Data for: Use of viscera from hunted roe deer by vertebrate scavengers in summer in central European mountainous mixed forest
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Highways associated with expansion of boreal scavengers into the alpine tundra of Fennoscandia
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Experimental manipulation of scavenger and herbivore functional role and their effects on plant communities following mass mortality events
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Effects of intraspecific competition and body mass on diet specialisation in a mammalian scavenger
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Overcoming nutritional immunity by engineering iron-scavenging bacteria for cancer therapy
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Data for vertebrate scavenger species composition on Nantucket Island, Massachusetts and implications for Nicrophorus americanus Olivier (American burying beetle) reintroduction
<p>Abstract: We surveyed scavenger species on Nantucket Island, MA, using motion-activated wildlife cameras baited with carcasses of either a Mus musculus domesticus (House Mouse) or Colinus virginianus (Bobwhite Quail) in the summer of 2016. We aimed to identify vertebrate scavenger species, measure how long carcasses remained available, and examine differences in carrion consumption between grassland and shrubland vegetation types. This information is important for management decisions concerning a reintroduced population of a federally endangered obligate scavenger, Nicrophorus americanus (American Burying Beetle), on Nantucket Island. Carcasses were removed or consumed within 2.7 ± 1.8 d, and vertebrates removed the carcass in 74% of trials. Carcasses persisted for similar lengths of time between the 2 vegetation types, but avian scavengers were significantly more common on Bobwhite Quail carcasses in grassland, and mammalian scavengers were significantly more common on House Mouse carcasses in shrubland habitats. Avian species appear to be significant competitors for carrion appropriate for American Burying beetle reproduction.</p> <p>This project was partly funded by grant #15-233 from the <a href="https://www.norcrosswildlife.org/">Norcross Wildlife Foundation</a>. </p> <p>File descriptions:<br> allCameraData.csv- Cleaned raw camera data. 2015 data from a pilot study and 2016 data are what was used for the publication.<br> dataDictionary.csv- Data dictionary for all csv files<br> figure2_goodnessOfFitTests.R- R code to create figure 2 and run goodness of fit and post hoc tests<br> quadplotper.csv- Data used by figure2_goodnessOfFitTests.R to create figure<br> resultsSummarized.csv- Authors' determinations of what species removed carrion</p>
Data from: An ECF-type transporter scavenges heme to overcome iron-limitation in Staphylococcus lugdunensis
<p>Energy-coupling factor type (ECF-transporters) represent trace nutrient acquisition systems. Substrate binding components of ECF-transporters are membrane proteins with extraordinary affinity, allowing them to scavenge trace amounts of ligand. A number of molecules have been described as substrates of ECF-transporters, but an involvement in iron-acquisition is unknown. Host-induced iron limitation during infection represents an effective mechanism to limit bacterial proliferation. We identified the iron-regulated ECF-transporter Lha in the opportunistic bacterial pathogen <i>Staphylococcus lugdunensis</i> and show that the transporter is specific for heme. The recombinant substrate-specific subunit LhaS accepted heme from diverse host-derived hemoproteins. Using isogenic mutants and recombinant expression of Lha, we demonstrate that its function is independent of the canonical heme acquisition system Isd and allows proliferation on human cells as sources of nutrient iron. Our findings reveal a unique strategy of nutritional heme acquisition and provide the first example of an ECF-transporter involved in overcoming host-induced nutritional limitation.</p>
Figure 1 in Could Tyrannosaurus rex have been a scavenger rather than a predator? An energetics approach
Figure 1. The minimum energy density that the ecosystem must provide to allow energy balance of the scavenger as a function of the distance in metres at which carrion can be detected, calculated from equation (2.7). The abscissa is logarithmic to the base 10 so '1' represents 10 m, '2' 100 m, '3' 1 km and '4' 10 km.
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