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6,859 results for “parasite”
Figure 1 in A Seinhorst Model Determined the Host-Parasite Relationships of Meloidogyne javanica Infecting Fenugreek cv. UM202
Figure 1: Scanning electron microscopy (SEM) images of the perineal pattern of M. javanica, which show a rounded to flattened dorsal arch and conspicuous lateral lines that separate the dorsal and ventral regions of the patterns. (A) A close view of the distinct lateral line in a perineal pattern distinguishes this species from other Meloidogyne spp. (B) An inner area was marked by coarsely broken striae and contained the vulva and anus.
Figure 3 in Genetic variation within a species of parasitic nematode, Skrjabingylus chitwoodorum, in skunks
Figure 3: Maximum likelihood phylogenetic tree of 492 base pair fragment of the cytochrome oxidase I gene for 44 samples of Skrjabingylus. Maximum likelihood analysis was performed using the best-fitting model, Hasegawa-Kishino-Yano of DNA substitution with Gamma distribution. Bootstrap values are based on 1000 replicates and values ≥70 are shown on branches. Number with prefix ASK identifies the specific host from which the sample was collected. Prefix KP is a Genbank accession number.
Figure 4 in Genetic variation within a species of parasitic nematode, Skrjabingylus chitwoodorum, in skunks
Figure 4: Median joining network showing the relationships among haplotypes of 44 samples of Skrjabingylus chitwoodorum from hosts Mephitis mephitis and Spilogale putorius interrupta using COI mtDNA. Sizes of solid black circles correlate to shared haplotypes among multiple counties. Small open circles represent hypothetical haplotypes and ticks on branches represent number of mutational steps.
Figure 2 in Genetic variation within a species of parasitic nematode, Skrjabingylus chitwoodorum, in skunks
Figure 2: Texas map showing the 25 counties represented in the analysis of Skrjabingylus within Mephitis mephitis hosts. Sample size included if greater than one.
Figure 1 in Genetic variation within a species of parasitic nematode, Skrjabingylus chitwoodorum, in skunks
Figure 1: Life cycle of Skrjabingylus chitwoodorum in Mephitis mephitis. Large gray arrows correspond to the movement of Skrjabingylus to an intermediate or paratenic host. Large black arrows correspond to the movement to the definitive host. Smaller arrows correspond to a molt occurring and the larva progressing to the next juvenile phase.
Plate 1 in Incidence of parasitic infection in adult and juvenile Clarias gariepinus in a private fish farm, Yola, Adamawa state
Plate 1: Adult Clarias gariepinus placed on adissecting board after measurement and weighing for dissection
Figure 7 in Fighting an invasive fish parasite in subarctic Norwegian rivers - The end of a long story?
Figure 7. Increase in rotenone concentration in water samples along the riverbank as result of spraying the bank with water of high rotenone concentration.
Figure 6 in Fighting an invasive fish parasite in subarctic Norwegian rivers - The end of a long story?
Figure 6. Temperature at 10 cm depth in substrate at a groundwater influenced riverbank before, during and after flooding the riverbed with rotenone-treated water. The curve shows an instant temperature rise, indicating rotenone treated surface water intruding the groundwater fed substrate.
Figure 5. Crew placing a in Fighting an invasive fish parasite in subarctic Norwegian rivers - The end of a long story?
Figure 5. Crew placing a rotenone disc in a small brook. Brooks of this size were numerous, often remote and typically inhabited with potentially infected arctic char juveniles. The rotenone disc replaced the more bulky 20 litre-can drip stations. Photograph by Dag H. Karlsen.
Figure 4. Spraying a in Fighting an invasive fish parasite in subarctic Norwegian rivers - The end of a long story?
Figure 4. Spraying a groundwater-fed side channel of the Skibotn River with portable backpack mounted pump. Surviving G. salaris infested arctic char was found in this location after the previous treatments in 1988 and 1995. In 2015 and 2016 this and similar locations was treated several times by different teams using both Vectocarb, CatSan hygiene litter saturated with CFT-Legumine and conventional spraying with water of high rotenone concentration. Photograph by Dag H. Karlsen.
Figure 2 in Fighting an invasive fish parasite in subarctic Norwegian rivers - The end of a long story?
Figure 2. Mapping of groundwater influx in the River Signaldalselva. The mapping was done by parallel logging of GPS position and temperatures along the riverbanks at late summer, the time of year with the highest temperature contrasts between surface water and upwelling groundwater. Photograph by Norwegian Veterinary Institute.
Figure 1 in Fighting an invasive fish parasite in subarctic Norwegian rivers - The end of a long story?
Figure 1. The large map shows the rivers (in red) with G. salaris in the Skibotn Region. Orange marks rivers treated without findings of the parasite. All rivers and brooks potentially inhabiting salmonids south of the black line across the Lyngen-fjord were treated. Inserted map shows the location in Norway.
Figure 3 in Fighting an invasive fish parasite in subarctic Norwegian rivers - The end of a long story?
Figure 3. Spraying the riverbank of the River Signaldalselva with water of high rotenone concentration. The iconic mountain Otertind in the background. Photograph by Dag H. Karlsen.
Wood duck nest survival and duckling recruitment is minimally affected by interspecific brood parasitism from hooded mergansers and black-bellied whistling-ducks
<p>In the southeastern United States, wood ducks (<em>Aix sponsa</em>) have historically experienced interspecific brood parasitism (IBP) primarily from hooded mergansers (<em>Lophodytes cucullatus</em>), but the recent northward expansion of black-bellied whistling-ducks (<em>Dendrocygna autumnalis</em>) has added a new complexity to these interactions. We monitored nest boxes in Louisiana to evaluate the influence IBP had on wood duck daily nest survival rate (after, DSR) and duckling recruitment. We monitored 1,295 wood duck nests from 2020−2023 and found 112 (8.7%) were parasitized by hooded mergansers and 148 (11.5%) by whistling-ducks. Parasitic egg-laying by hooded mergansers lowered wood duck DSR, while DSR for nests parasitized by whistling-ducks was comparable to clutches containing only wood duck eggs. We considered the wood duck capture histories of 2,465 marked female ducklings and 540 banded adult females to estimate a duckling recruitment probability for the entire study period. We recaptured 50 ducklings as adults; 6 (12.0%) hatched from clutches parasitized by hooded mergansers, 1 (2.0%) from a clutch parasitized by a whistling-duck, and 43 (86.0%) from clutches containing only wood duck eggs. The duckling recruitment probability was 0.039 (95% credible interval = 0.028, 0.051). Nest initiation date had a negative effect on recruitment, wherein most recruits hatched from nests initiated earlier in the season. Given only ~9% of wood duck nests contained hooded merganser eggs, we conclude IBP writ large had no detrimental effect on DSR at a population level. The lower DSR of clutches parasitized by hooded mergansers is potentially linked to a high abundance of early-season parasites that produce "dump nests" and these clutches are often abandoned without being incubated. Despite ongoing parasitism by hooded mergansers and the range expansion of whistling-ducks, wood duck productivity in Louisiana appears to be minimally affected by interspecific brood parasitism.</p>
Figure 6 in Depth distribution of plant-parasitic nematodes on bentgrass golf greens in Missouri and Indiana
Figure 6: PCR results using Meloidogyne-specific and M. naasi and M. marylandi-specific primers. DL: DNA Ladder; 1: Meloidogyne spp. (DNA ID:9); 2: M. naasi (DNA ID:9); 3: Meloidogyne spp. (DNA ID:4); 4: M. marylandi (DNA ID:4); and 5: Meloidogyne spp.(DNA ID:4).
Figure 3 in Depth distribution of plant-parasitic nematodes on bentgrass golf greens in Missouri and Indiana
Figure 3: PCR results using Hoplolaimus-specific and H. stephanus, H. columbus and H. galeatus-specific primers. DL: DNA Ladder; 1: Hoplolaimus spp. (DNA ID:10); 2: H. stephanus (DNA ID:10); 3: H. columbus (DNA ID:10); 4 H. galeatus (DNA ID:10); 5: Hoplolaimus spp. (DNA ID:3); 6: H. stephanus (DNA ID:3); 7: H. columbus (DNA ID:3); 8 H. galeatus (DNA ID:3); 9: Hoplolaimus spp. (DNA ID:4); 10: H. stephanus (DNA ID:4); 11: H. columbus (DNA ID:4); and 12 H. galeatus (DNA ID:4).
Figure 2 in Depth distribution of plant-parasitic nematodes on bentgrass golf greens in Missouri and Indiana
Figure 2: Phylogeny of the rDNA ITS region of Hoplolaimus spp. isolated from golf putting greens. Phylogenetic trees were constructed with the neighbor-joining algorithm using the Kimura two-parameter model with Litylenchus spp. (LC383724) as the outgroup. Bootstrap values are based on 1000 resamplings of the data set. DNAID codes correlate to Table 2.
Figure 1 in Depth distribution of plant-parasitic nematodes on bentgrass golf greens in Missouri and Indiana
Figure 1: Distribution of plant-parasitic nematode species sampled from creeping bentgrass putting greens in Missouri and eastern Kansas in 2021 and Indiana in 2022 in two independent pie charts. Samples were collected during the months of April, June, August and October of 2021 and 2022, respectively. "n" indicates total PPNs represented within each chart.
Figure 3 in Plant-Parasitic Nematodes and their Effects on Ornamental Plants: A Review
Figure 3: Hot water dipping tank (A) and the interior of the tank (B) at a commercial nursery in Michigan.
Figure 4 in Depth distribution of plant-parasitic nematodes on bentgrass golf greens in Missouri and Indiana
Figure 4: Scanning-electron micrographs of a lance nematode specimen collected form Site 5. A) four lip annules; B) the presence of an epiptygma; C) 25 longitudinal striae on the basal lip annule; and D) four lateral incisures.
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Allen Brain Atlas
Allen Brain Atlas is an Allen Institute collection of brain map atlases, datasets, APIs, and analysis tools covering mouse, human, and non-human primate brain resources.
Annotated Behaviour and Observability Dataset (ABODe)
ABODe is a University of Edinburgh DataShare dataset for behavior classification in group-housed mice using home-cage video, identities, bounding boxes, ground-plate positions, and annotator labels.
DANDI Archive for NWB datasets
DANDI is a BRAIN Initiative archive for publishing and sharing neurophysiology data, including electrophysiology, optophysiology, and behavioral data packaged as NWB and related standards.
International Brain Laboratory public data
The International Brain Laboratory public data releases expose standardized mouse decision-making experiments, including Neuropixels recordings, widefield calcium imaging, behavior, and session metadata accessed through the ONE API.
OpenNeuro
OpenNeuro is a free, open platform for sharing neuroimaging datasets, with public search, dataset pages, and download paths for web, S3, DataLad, and the OpenNeuro CLI.