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122 results for “Eimeria”
Reduction of chickens use to perform in vitro pre-screening of novel anticoccidials by miniaturisation and increased throughput of the current Eimeria tenella compound-screening model
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Intensity of infection with intracellular Eimeria spp. and pinworms is reduced in hybrid mice compared to parental subspecies
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FIGURE 4 in Eimeria spp. (Apicomplexa: Eimeriidae) in Didelphis aurita Wied-Neuwied, 1826 (Didelphimorphia: Didelphidae) and description of a new species infecting this opossum
FIGURE 4. Eimeria caluromydis. Stieda body (black arrow), substieda body (red arrow) and sporocyst residuum (grey arrow). Scale bar 10µm
FIGURE 3. Eimeria auritanensis. A in Eimeria spp. (Apicomplexa: Eimeriidae) in Didelphis aurita Wied-Neuwied, 1826 (Didelphimorphia: Didelphidae) and description of a new species infecting this opossum
FIGURE 3. Eimeria auritanensis. A—Polar granule (black arrow) and sporocyst residuum (yellow arrow); B—Stieda body (blue arrow). Scale bar 10µm
FIGURE 2. Eimeria philanderi. A in Eimeria spp. (Apicomplexa: Eimeriidae) in Didelphis aurita Wied-Neuwied, 1826 (Didelphimorphia: Didelphidae) and description of a new species infecting this opossum
FIGURE 2. Eimeria philanderi. A—Stieda body (black arrow) and sporocyst residuum (blue arrow); B—Polar granule (red arrow). Scale bar 10µm
FIGURE 3 in Eimeria ferreirai n. sp. (Chromista: Miozoa: Eimeriidae) from doves Leptotila spp (Columbiformes: Columbidae) from Brazil
FIGURE 3. Maximum likelihood tree estimated from the COI gene sequences of eimeriid species. Numbers at nodes represent bootstrap support 1000 replicates (> 50%) for Neighbor-Joining (NJ) and Maximum Likelihood (ML) respectively. Scale bar represents the number of nucleotide substitutions per site.
FIGURE 2 in Eimeria ferreirai n. sp. (Chromista: Miozoa: Eimeriidae) from doves Leptotila spp (Columbiformes: Columbidae) from Brazil
FIGURE 2. Photomicrographs (A–F) of sporulated oocysts of Eimeria ferreirai n. sp., a new coccidium species recovered from doves Leptotila spp. Note the inner (IL) and outer (OL) layer of the oocyst wall, micropyle (M), micropyle cap (MC), nucleus (N), polar granule (PG), refractile body (RB), Stieda body (SB) and the sporocyst residuum (SR). Scale-bar: 10µm.
FIGURE 1 in Eimeria ferreirai n. sp. (Chromista: Miozoa: Eimeriidae) from doves Leptotila spp (Columbiformes: Columbidae) from Brazil
FIGURE 1. Line drawing of the sporulated oocyst of Eimeria ferreirai n. sp., a new coccidium species recovered from doves Leptotila spp. Scale-bar: 10µm.
Data from: Mitochondrial genomes of Australian chicken Eimeria support the presence of ten species with low genetic diversity among strains
Modern molecular approaches have vastly improved diagnostic capabilities for differentiating among species of chicken infecting Eimeria. Consolidating information from multiple genetic markers, adding additional poultry Eimeria species and increasing the size of available data-sets is improving the resolving power of the DNA, and consequently our understanding of the genus. This study adds information from 25 complete mitochondrial DNA genomes from Australian chicken Eimeria isolates representing all 10 species known to occur in Australia, including OTU-X, −Y and −Z. The resulting phylogeny provides a comprehensive view of species relatedness highlighting where the OTUs align with respect to others members of the genus. All three OTUs fall within the Eimeria clade that contains only chicken-infecting species with close affinities to E. maxima, E. brunetti and E. mitis. Mitochondrial genetic diversity was low among Australian isolates likely reflecting their recent introduction to the country post-European settlement. The lack of observed genetic diversity is a promising outcome as it suggests that the currently used live vaccines should continue to offer widespread protection against Eimeria outbreaks in all states and territories. Flocks were frequently found to host multiple strains of the same species, a factor that should be considered when studying disease epidemiology in the field.
Time-series transcriptome analysis identified differentially expressed genes in broiler chicken infected with mixed Eimeria species
<p>Coccidiosis caused by the <em>Eimeria</em> species is a highly problematic disease in the chicken industry. Here, we used RNA sequencing to observe the time-dependent host responses of <em>Eimeria</em>-infected chickens to examine the genes and biological functions associated with immunity to the parasite. Transcriptome analysis was performed at three time points: 4, 7, and 21 days post-infection (dpi). Based on the changes in gene expression patterns, we defined three groups of genes that showed differential expression. This enabled us to capture evidence of endoplasmic reticulum stress at the initial stage of <em>Eimeria</em> infection. Furthermore, we found that innate immune responses against the parasite were activated at the first exposure; they then showed gradual normalization. Although the cytokine-cytokine receptor interaction pathway was significantly operative at 4 dpi, its downregulation led to an anti-inflammatory effect. Additionally, the construction of gene co-expression networks enabled identification of immunoregulation hub genes and critical pattern recognition receptors after <em>Eimeria</em> infection. Our results provide a detailed understanding of the host-pathogen interaction between chicken and <em>Eimeria</em>. The clusters of genes defined in this study can be utilized to improve chickens for coccidiosis control.</p>
Database of conference proceedings references corresponding to Eimeria species that infect ruminants
<p>Database of conference proceedings references corresponding to Eimeria species that infect ruminants</p>
FIGURE 1 in Eimeria psittacarae n. sp. (Apicomplexa: Eimeiriidae) from white-eyed parakeets Psittacara leucophthalmus (Müller, 1776) (Psittaciformes: Psittacidae) kept for rehabilitation and reintroduction in the Parque Nacional da Serra dos Órgãos, Southeastern Brazil
FIGURE 1. Line drawing of a sporulated oocyst of Eimeria psittacarae n. sp., a new coccidium species recovered from the white-eyed parakeet Psittacara leucophthalmus. Scale-bar: 10µm.
FIGURE 2 in Eimeria psittacarae n. sp. (Apicomplexa: Eimeiriidae) from white-eyed parakeets Psittacara leucophthalmus (Müller, 1776) (Psittaciformes: Psittacidae) kept for rehabilitation and reintroduction in the Parque Nacional da Serra dos Órgãos, Southeastern Brazil
FIGURE 2. Photomicrographs (A–D) of sporulated oocysts of Eimeria psittacarae n. sp., a new coccidium species recovered from the white-eyed parakeet Psittacara leucophthalmus. Note the micropyle (m), polar granule (pg), inner (il) and outer (ol) layer of the delicate wall of an oocyst shriveled after a short time in saturated solution, Stieda body (sb), sub-stieda body (ssb), sporocyst residuum (sr), refractile body (rb) and the nucleus (n). Scale-bar: 10µm.
Data from: Mitochondrial genomes of Australian chicken Eimeria support the presence of ten species with low genetic diversity among strains
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FIGURE 1. Eimeria gambai. A in Eimeria spp. (Apicomplexa: Eimeriidae) in Didelphis aurita Wied-Neuwied, 1826 (Didelphimorphia: Didelphidae) and description of a new species infecting this opossum
FIGURE 1. Eimeria gambai. A—Stieda body (arrow); B—Sporocyst residuum (arrow). Scale bar 10µm.
Figs 7–8 in Eimeria spp. (Apicomplexa: Eimeriidae) in Black Caiman Melanosuchus niger (Crocodilia: Alligatoridae) from the Amazon Region, Brazil, with a Description of Two New Coccidian Species
Figs 7–8. Line drawings of sporulated coccidian oocysts collected from black caiman faeces. 7 – Eimeria nigeri n. sp.; 8 – Eimeria portovelhensis n. sp.
Figs 1–2 in A New Species of Eimeria Schneider, 1875 (Apicomplexa: Eimeriidae) from the Common Wood Pigeon Columba palumbus Linnaeus, 1758 (Aves: Columbidae)
Figs 1–2. Nomarski interference micrograph of oocyst of Eimeria columbapalumbi n. sp. isolated from the feces; note Stieda body (Fig. 1, black arrow) and elongated sporozoite anterior refractile body (Fig. 2, asterisk).
Fig. 2 in Detection and quantification of house mouse Eimeria at the species level - Challenges and solutions for the assessment of coccidia in wildlife
Fig. 2. Phylogenetic trees based on 18S rRNA and COI sequences. Sequences of 18S A) and COI B) were used to infer the molecular identification of wild-derived isolates of Eimeria. In both phylogenies, our isolates clustered in three groups one close to E. falciformis (red), other close to E. ferrisi (green) and finally one to E. vermiformis (yellow). Numbers in the branches represent the Bayesian posterior probability and the non-parametric bootstrap value. In bold are indicate the reference sequences for each species. CE and IL make reference to sequence derived from cecum or ileum tissue DNA, respectively. (For interpretation of the references to color in this figure legend, the reader is referred to the Web version of this article.)
Immunoenhancing effects of Montanide adjuvant on recombinant coccidia antigen vaccination against Eimeria spp. and comparative microarray analysis of intestinal lymphocytes
GEO Series GSE40743. Gallus gallus. 8 samples. Type: Expression profiling by array.
Effect of dietary supplementation with Anethol during Eimeria maxima and Eimeria tenella infection of chickens
GEO Series GSE41250. Gallus gallus. 2 samples. Type: Expression profiling by array.
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