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361 results for “hedgehog”
Figure 6 in Discrimination of the sister hedgehog species Erinaceus concolor and E. roumanicus (Erinaceomorpha: Mammalia): a geometric morphometric approach
Figure 6. Multivariate regression analysis of shape variables vs centroid size of the dorsal cranium (closed circle: E. concolor, n = 39; open circle: E. roumanicus, n = 10).
Figure 4 in Discrimination of the sister hedgehog species Erinaceus concolor and E. roumanicus (Erinaceomorpha: Mammalia): a geometric morphometric approach
Figure 4. PCA scatter plot graphics showing the variations in the mandible (closed circle: E. concolor, n = 54; open circle: E. roumanicus, n = 14) with warped outline drawings describing shape changes along the PC1 axis for each species.
Figure 5 in Discrimination of the sister hedgehog species Erinaceus concolor and E. roumanicus (Erinaceomorpha: Mammalia): a geometric morphometric approach
Figure 5. Histograms of the crossvalidation results. a. Dorsal surface of crania, b. Right side of mandible. Red bars: E. concolor; blue bars: E. roumanicus.
Fig. 2 in An investigation of endoparasites and the determinants of parasite infection in European hedgehogs (Erinaceus europaeus) from Denmark
Fig. 2. Overall parasite prevalence by age. Numbers on the x-axis indicate age in years. Numbers on top of the columns indicate number of individuals, in red for hedgehogs with endoparasites, in blue for hedgehogs without endoparasites. Statistically significant differences in proportions of hedgehogs with endoparasites versus without hedgehogs, were found between juveniles (<1 year) and age classes 1–6 years, and between hedgehogs of one year versus two years of age as shown in the upper right corner of the figure. (For interpretation of the references to colour in this figure legend, the reader is referred to the Web version of this article.)
Fig. 4 in An investigation of endoparasites and the determinants of parasite infection in European hedgehogs (Erinaceus europaeus) from Denmark
Fig. 4. Overall parasite prevalence by region. Numbers indicate number of individuals, in red for hedgehogs with parasites, in blue without. JNL denotes Jutland north of the Limfjord, and JSL abbreviates Jutland south of the Limfjord. Statistically significant differences in proportions of hedgehogs with endoparasites versus hedgehogs without endoparasites were found between Zealand and Jutland south of the Limfjord (JSL), and Zealand and Falster (p <0.05 in both cases). We removed seven individuals from the analyses (Jutland north of the Limfjord (n = 1), Jutland south of the Limfjord (n = 4), Lolland (n = 1), Bornholm (n = 1)), as they were the only individuals found in April and December, and four were only categorised as collected in "Summer 2016". (For interpretation of the references to colour in this figure legend, the reader is referred to the Web version of this article.)
Fig. 1. A in An investigation of endoparasites and the determinants of parasite infection in European hedgehogs (Erinaceus europaeus) from Denmark
Fig. 1. A map representing Denmark and the geographical locations of the 299 dead European hedgehogs examined. Colours indicate the different species of endoparasites detected in each individual. (For interpretation of the references to colour in this figure legend, the reader is referred to the Web version of this article.)
Fig. 5 in Ectoparasites of hedgehogs: From flea mite phoresy to their role as vectors of pathogens
Fig. 5. Phylogenetic analysis of the 16S rRNA gene (281 bp) of Ehrlichia and Anaplasma spp. detected in this study (Bold) and relationship with other Ehrlichia/ Anaplasma spp. The evolutionary history was inferred by using the Maximum Likelihood method based on the Kimura 2-parameter model (Kimura, 1980). Initial tree (s) for the heuristic search were obtained automatically by applying Neighbor-Join and BioNJ algorithms to a matrix of pairwise distances estimated using the Maximum Composite Likelihood (MCL) approach, and then selecting the topology with superior log likelihood value. The rate variation model allowed for some sites to be evolutionarily invariable ([+I], 37.72% sites). GenBank accession number and country of origin are presented for each sequence.
Fig. 3 in Ectoparasites of hedgehogs: From flea mite phoresy to their role as vectors of pathogens
Fig. 3. Phylogenetic analysis of the gltA gene (345 bp) of Rickettsia asembonensis detected in this study (Bold) and relationship with other Rickettsia spp. The evolutionary history was inferred by using the Maximum Likelihood method based on the Tamura 3-parameter model (Tamura, 1992). A discrete Gamma distribution was used to model evolutionary rate differences among sites (5 categories [+G, parameter = 0.2157]). GenBank accession number and country of origin are presented for each sequence.
Fig. 4 in Ectoparasites of hedgehogs: From flea mite phoresy to their role as vectors of pathogens
Fig. 4. Phylogenetic analysis of the ompA gene (579 bp) of Rickettsia slovaca and Rickettsia massiliae detected in this study (Bold) and relationship with other Rickettsia spp. The evolutionary history was inferred by using the Maximum Likelihood method based on the Tamura 3-parameter model (Tamura, 1992). Initial tree(s) for the heuristic search were obtained automatically by applying Neighbor-Join and BioNJ algorithms to a matrix of pairwise distances estimated using the Maximum Composite Likelihood (MCL) approach, and then selecting the topology with superior log likelihood value. The rate variation model allowed for some sites to be evolutionarily invariable ([+I], 20.90% sites). GenBank accession number and country of origin are presented for each sequence.
Linked collectors and determiners for: Validation of the status of a species with high CO 1 and low nuclear genetic divergences: the scab mite Caparinia ictonyctis stat. res. (Acariformes: Psoroptidae) parasitizing the African hedgehog Atelerix albiventris.
Natural history specimen data linked to collectors and determiners held within, "Validation of the status of a species with high CO 1 and low nuclear genetic divergences: the scab mite Caparinia ictonyctis stat. res. (Acariformes: Psoroptidae) parasitizing the African hedgehog Atelerix albiventris". Claims or attributions were made on Bionomia by volunteer Scribes, <a href="https://bionomia.net/dataset/3f253e3e-777e-465d-841d-a67e3b645d1a">https://bionomia.net/dataset/3f253e3e-777e-465d-841d-a67e3b645d1a</a> using specimen data from the dataset aggregated by the Global Biodiversity Information Facility, <a href="https://gbif.org/dataset/3f253e3e-777e-465d-841d-a67e3b645d1a">https://gbif.org/dataset/3f253e3e-777e-465d-841d-a67e3b645d1a</a>. Formatted as a Frictionless Data package.
Fig. 8 in The Phylogenetic Resolving Power of Discrete Dental Morphology Among Extant Hedgehogs and the Implications for Their Fossil Record
Fig. 8. An example of ambiguous distribution of character states; (a) I2 cuspules always present in the juveniles and polymorphic for the adults (Hylomys suillus); (b) expression of the P3 posterior cingulum is a consequence of wear (Erinaceus amurensis).
Fig. 1 in The Phylogenetic Resolving Power of Discrete Dental Morphology Among Extant Hedgehogs and the Implications for Their Fossil Record
Fig. 1. (a) Gould's (1995) Adams tree, fossils are indicated in bold (b) Frost et al.'s (1991) single most parsimonious tree. A = Erinaceidae; B = Hylomyinae; C = Erinaceinae; D = Brachyericinae.
Fig. 9 in The Phylogenetic Resolving Power of Discrete Dental Morphology Among Extant Hedgehogs and the Implications for Their Fossil Record
Fig. 9. (a) Phylogenetic analysis 1 (data set A); strict consensus tree; (b) majority rule tree; (c) phylogenetic analysis 2a (Gould, 1995) strict consensus tree. (d) Phylogenetic analysis 2b (Gould, 1995) strict consensus tree; (e) majority rule tree.
Fig. 2 in The Phylogenetic Resolving Power of Discrete Dental Morphology Among Extant Hedgehogs and the Implications for Their Fossil Record
Fig. 2. Occlusal view of idealized tribosphenic molars: (a) first upper molar; (b) first lower molar (taken from Rich, 1981). Abbreviations: cc = centrocrista (to include postparacrista and premetacrista); co = cristid obliqua; ecg = ectocingulum; ecgd = ectocingulid; efx = ectoflexus; encd = entocristid; enld = entoconulid; end = entoconid; hy = hypocone; hyd = hypoconid; hyld = hypoconulid; hyxd = hypoflexid; me = metacone; mec = metacrista (or postmetacrista); med = metaconid; meg = metacingulum; ms = mesostyle; msd = mesoconid; mt = metastyle; mtl = metaconule; pa = paracone; pac = paracrista (or preparacrista); pacd = postparacrista; pad = paraconid; pag = paracingulum; pcg = precingulum; pmlc = premetaconule crista; pplc = preparaconule crista; pprc = preprotocrista; pr = protocone; prcd = protocristid; prd = protoconid; prl = paraconule; prgd = precingulid; ps = parastyle; psc = postcrista; pscg = postcingulum; psgd = postcingulid; psmlc = postmetaconule crista; psplc = postparaconule crista; psprc = postprotocrista; st = stylocone; sts = stylar shelf; tb = trigon basin; tdb = trigonid basin; tlb = talonid basin; tln = talonid notch; trn = trigonid notch.
Data from: Fine scale phylogeography of urban Western European hedgehog Erinaceus europaeus in south-east England
Open the record for dataset details and reuse information.
Hedgehog signaling is necessary and sufficient to mediate craniofacial plasticity in teleosts
<p>Phenotypic plasticity, the ability of a single genotype to produce multiple phenotypes under different environmental conditions, is critical for the origins and maintenance of biodiversity; however, the genetic mechanisms underlying plasticity as well as how variation in those mechanisms can drive evolutionary change remain poorly understood. Here, we examine the cichlid feeding apparatus, an icon of both prodigious evolutionary divergence and adaptive phenotypic plasticity. We first provide a tissue-level mechanism for plasticity in craniofacial shape by measuring rates of bone deposition within functionally salient elements of the feeding apparatus in fishes forced to employ alternate foraging modes. We show that levels and patterns of phenotypic plasticity are distinct among closely related cichlid species, underscoring the evolutionary potential of this trait. Next, we demonstrate that hedgehog (Hh) signaling, which has been implicated in the evolutionary divergence of cichlid feeding architecture, is associated with environmentally induced rates of bone deposition. Finally, to demonstrate that Hh levels are the cause of the plastic response and not simply the consequence of producing more bone, we use transgenic zebrafish in which Hh levels could be experimentally manipulated under different foraging conditions. Notably, we find that the ability to modulate bone deposition rates in different environments is dampened when Hh levels are reduced, whereas the sensitivity of bone deposition to different mechanical demands increases with elevated Hh levels. These data advance a mechanistic understanding of phenotypic plasticity in the teleost feeding apparatus and in doing so contribute key insights into the origins of adaptive morphological radiations.</p>
Concrete hedgehog anti-tank
The Czech hedgehog (Czech: rozsocháč or ježek) is a static anti-tank obstacle defense made of metal angle beams or I-beams (that is, lengths with an L- or I-shaped cross section). The hedgehog is very effective in keeping light to medium tanks and vehicles from penetrating a line of defense; it maintains its function even when tipped over by a nearby explosion. Although Czech hedgehogs may provide some scant cover for infantry, infantry forces are generally much less effective against fortified defensive positions than mechanized units. Source: Objaverse 1.0 / Sketchfab
Non-Canonical Hedgehog Signaling Mediates Profibrotic Hematopoiesis-Stroma Crosstalk in Myeloproliferative Neoplasms
<p>We provide results regarding the bioinformatic analysis of scRNA-seq from bone marrow fibrosis mouse models. This includes final processed scRNA-seq data containing QC information, dimensionality reduction, and annotation of cell types. Additional tables including DE genes and markers can be found in the supplementary information of the publication.</p>
COVID-19 lockdown measures impacted citizen science hedgehog observation numbers in Bavaria, Germany
<p>The COVID-19 pandemic has led to temporary changes in human-animal interactions due to changes in human activities. Here we report on a surge in hedgehog observations during the first COVID-19 lockdown in Germany in 2020, on the citizen science web portal 'Igel in Bayern' (Hedgehogs in Bavaria) in Germany. This increase in comparison to previous years could be attributed to an increase in the number of people reporting hedgehog observations, rather than an increase in the number of hedgehog observations done by each observer. Additionally, in contrast to other studies on the effects of a COVID-19 lockdown on observations recorded by Citizen Science projects, the share of observations made in more urbanized areas during the lockdown time was not higher than the change observed in less urbanized areas. This is possibly a result of the differences in COVID-19 measures between Germany and other countries where preceding studies were carried out, in particular the lack of measures limiting outdoor activities for citizens.</p>
Czech Hedgehog Anti-tank Barrier
A Czech hedgehog that was used in warfare as a anti-tank or anti-vehicle defense. Untextured but ready for use/texturing. Most commonly known from D-day landings. Source: Objaverse 1.0 / Sketchfab
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