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61 results for “Ovis”
Data from: Mating tactic influences body condition loss in Rocky Mountain bighorn rams (Ovis canadensis)
<p>In polygynous mating systems, males often employ alternative mating tactics to enhance reproductive success. In Rocky Mountain bighorn sheep, the primary tactics are coursing, involving mating chases, and tending, involving mate guarding. While both tactics are energetically costly and can diminish body condition, it remains unclear whether the associated costs significantly differ and to what extent. Our study investigated the impact of mating tactics, specifically the proportion of time allocated to each, on body condition loss during the rutting season in bighorn sheep. Using a non-invasive photographic method to estimate body condition loss, we found that the proportion of time a male spent tending significantly correlated with body condition loss. In contrast, the percentage of time spent coursing did not show a significant effect. Age was associated with the choice of tactic, with younger males predominantly coursing, older males primarily tending, and some intermediate-aged males employing both tactics concurrently. Despite the higher energetic costs, our results reveal the flexibility in tactic usage and indicate that tending, while demanding, is a high-cost, high-gain strategy, as tending rams are known to sire more offspring.</p>
Ovis canadensis (Bovidae) - whole organism - unspecified
Image of Ovis canadensis (Bovidae) - whole organism - unspecified
Ovis canadensis (Bovidae) - whole organism - unspecified
Image of Ovis canadensis (Bovidae) - whole organism - unspecified
Figure. Interferon alpha-A based phylogenetic tree (neighbor joining method) constructed by MEGA 6.1 for Punjab urial in comparison with other mammalian species sequences available from GenBank (NCBI). in Characterization of interferon alpha of major histocompatibility complex class I in Punjab urial (Ovis vignei punjabiensis)
Figure. Interferon alpha-A based phylogenetic tree (neighbor joining method) constructed by MEGA 6.1 for Punjab urial in comparison with other mammalian species sequences available from GenBank (NCBI).
Fig. 2 in Toxoplasma gondii infection in European mouflons (Ovis musimon) and captive wild felines from Puebla, M�exico
Fig. 2. Representative PCR-RFLP pattern of T. gondii for SAG3 gene. Single and mixed infections in lions and mouflons tissues were observed. A. PCR for the SAG3 locus of lion 1 (L1, spleen), mouflon 1 (M1, brain) and mouflon 2 (M2, liver) samples. B. A triple infection is highlighted (yellow box). Resulting genotypes are specified at the bottom. In silico digestion was done by www.benchling.com. Reference strains sequences GT1, TGGT1_308020; Me49, TGME49_308020; VEG, TGVEG_308020 are available at www.toxodb.org. MW: molecular weight marker; RH and ME49 are reference strains, type I and II, respectively; M: mouflon, L: lion. (For interpretation of the references to colour in this figure legend, the reader is referred to the Web version of this article.)
Fig. 1 in Toxoplasma gondii infection in European mouflons (Ovis musimon) and captive wild felines from Puebla, M�exico
Fig. 1. Toxoplasma gondii infection in captive mouflons in 2011 and 2012. A. Anti-T. gondii frequency distribution in fifty-five sera of mouflons sampled in 2011; black arrows indicate positive samples as determined by their position to the right of the normally distributed values of the left population. B. One year later, 41/55 original mouflons were captured, bled, and re-tested for antibodies against this parasite. The cut-off point used was 1.0 RI (dotted lines), which separated the negative population (left) from the positive cases. C. Three mouflons remained positive, five became negative, and four seroconverted positive in 2012 (red, green and blue dots, respectively); one mouflon is on the cut-off (orange dot). D. Immunohistochemistry for T. gondii in tissues from in the spleen of mouflon 1, where an immunopositive cumulus of tachyzoites can be seen (blue arrow). The nuclei of resident lymphocytes and dendritic cells were contrasted with Meyer's hematoxylin. Bar: 50 μm. R = Pearson correlation. (For interpretation of the references to colour in this figure legend, the reader is referred to the Web version of this article.)
Fig. 1 in Traceback of the Psoroptes outbreak in British Columbian bighorn sheep (Ovis Canadensis)
Fig. 1. Characteristic long segmented peduncle (circle) that differentiates the genus of Psoroptes spp. from other psoroptidae that have relatively short unsegmented peduncles. (40× magnification captured on a Zeiss Universal compound light microscope outfitted with a TRke SPOT camera using SPOT image capture software).
Fig. 4 in Traceback of the Psoroptes outbreak in British Columbian bighorn sheep (Ovis Canadensis)
Fig. 4. Distribution of outer opisthosomal setae (OOS) lengths of Psoroptes collected from rabbits (labelled Rabbit), USA bighorn sheep (labelled BHS_USA), and Canada-outbreak associated bighorn sheep (labelled BHS_CAN). Each is marked with the province or state of host origin. Horizontal lines represent median OOS of each host grouping.
Fig. 3 in Traceback of the Psoroptes outbreak in British Columbian bighorn sheep (Ovis Canadensis)
Fig. 3. (a) Micrograph of a characteristic opisthosomal lobe of a USA bighorn mites (10× magnification captured on an Olympus C×33 compound light microscope with an Olympus EP50 camera using EP view software). The photographed mite was collected from a bighorn sheep in the Hells Canyon metapopulation. Note the more prominent outer opisthosomal lobe edge (circle) and broad base to the outer opisthosomal setae (arrow), (b) Micrograph of a characteristic opisthosomal lobe of BC bighorn origin mites (10× magnification captured on an Olympus C×33 compound light microscope with an Olympus EP50 camera using EP view software). This mite was collected from a bighorn in the Okanagan region of BC. Note the less distinct outer opisthosomal edge (circle) and the relatively less prominent base of the outer opisthosomal setae (arrow). (c) Micrograph of a characteristic opisthosomal lobe of rabbit origin mites (10× magnification captured on an Olympus C×33 compound light microscope with an Olympus EP50 camera using EP view software). This mite was collected from a rabbit in Maple Ridge, British Columbia. Note the less distinct outer opisthosomal edge (circle) and the relatively less prominent base of the outer opisthosomal setae (arrow).
Fig. 2 in Patterns of gastrointestinal parasite infections in bighorn sheep, Ovis canadensis, with respect to host sex and seasonality
Fig. 2. Seasonal differences in fecal egg counts in female (blue) and male (red) bighorn sheep. Point intervals display the mean count ±95% confidence intervals as predicted by generalised linear mixed effects models. Seasons are: Late gestation (Late gestation/early lactation between April to June); Lactation/summer (between July and October); Rut (November and December); Winter (Winter/early gestation from January to March). Parasites are a) Strongyle; b) Nematodirus; c) Marshallagia; d) Protostrongylus lungworm; e) Eimeria. (For interpretation of the references to colour in this figure legend, the reader is referred to the Web version of this article.)
Fig. 1 in Patterns of gastrointestinal parasite infections in bighorn sheep, Ovis canadensis, with respect to host sex and seasonality
Fig. 1. Schematic of the reproductive biology and seasons of bighorn sheep. The blue circle represents the entire year, where the top is December, 3 o'clock March, 6 o'clock June, 10 o'clock October etc. The grey quarter circle represents the season Jan–March = Winter/early gestation; the dark green quarter circles represent the season from April–June = late gestation/early lactation; the light green line represents the season between July and October, which is also representing lactation/summer; and the brown line is representing November and December, or the rutting season. (For interpretation of the references to colour in this figure legend, the reader is referred to the Web version of this article.)
Fig. 3 in Patterns of gastrointestinal parasite infections in bighorn sheep, Ovis canadensis, with respect to host sex and seasonality
Fig. 3. Differences in mean and standard error in strongyle counts between males that use the coursing or tending mating tactic. Point intervals display the mean count ±95% confidence intervals as predicted by the generalised linear mixed effects model.
Data from: Mating tactic influences body condition loss in Rocky Mountain bighorn rams (Ovis canadensis)
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Raw coordinates of 3D landmarks related to the article 'A new zooarchaeological application for geometric morphometric methods: Distinguishing Ovis aries morphotypes to address connectivity and mobility of prehistoric Central Asian pastoralists' by Haruda et al.
<p>Raw coordinates from 3D landmarks of <em>Ovis aries </em>astragali. These bones originate from Final Bronze Age archaeological contexts from central and southeastern Kazakhstan. These relate to the article 'A new zooarchaeological application for geometric morphometric methods: Distinguishing <em>Ovis aries</em> morphotypes to address connectivity and mobility of prehistoric Central Asian pastoralists' by Haruda et al. </p>
Ensemble and single cell data for primary Ovis Aries pulmonary artery endothelial cells response to IGF-1 administration
<p>Data for IGF-1 administration of healthy and persistent pulmonary hypertension of the newborn primary Ovis Aries pulmonary artery endothelial cells.</p> <p>Ensemble.zip:<br> Dose-response to IGF-1<br> Proliferation<br> Western blots for VEGF and eNOS<br> IGF-1R and mTOR inhibition<br> Branch points in tube formation assay<br> <br> IF.zip:<br> Cellprofiler 3.1 analysis of snapshot data for the time course of IGF-1 administration with nuclei, actin, VEGF, and eNOS</p> <p>Translation.zip:<br> CellProfiler 3.1 analysis of snapshot data for the time course of IGF-1 administration with nuclei and total protein production</p>
Fig. 2 in Traceback of the Psoroptes outbreak in British Columbian bighorn sheep (Ovis Canadensis)
Fig. 2. Map of the sample origin locations and associated host groups of Psoroptes samples used.
Movement decisions driving metapopulation connectivity respond to social resources in a long-lived ungulate, bighorn sheep (Ovis canadensis)
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Dust and grit matter: abrasives of different size lead to opposing dental microwear textures in experimentally fed sheep (Ovis aries)
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Data from: The genetic architecture of helminth-specific immune responses in a wild population of Soay sheep (Ovis aries)
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Data from: Characterizing population and individual migration patterns among native and restored bighorn sheep (Ovis canadensis)
Migration evolved as a behavior to enhance fitness through exploiting spatially and temporally variable resources and avoiding predation or other threats. Globally, landscape alterations have resulted in declines to migratory populations across taxa. Given the long time periods over which migrations evolved in native systems, it is unlikely restored populations embody the same migratory complexity that existed before population reductions or regional extirpation. 2. We used GPS location data collected from 209 female bighorn sheep (Ovis canadensis) to characterize population and individual migration patterns along elevational and geographic continuums for 18 populations of bighorn sheep with different management histories (i.e., restored, augmented, and native) across the western United States. 3. Individuals with resident behaviors were present in all management histories. Elevational migrations were the most common population-level migratory behavior. There were notable differences in the degree of individual variation within a population across the three management histories. Relative to native populations, restored and augmented populations had less variation among individuals with respect to elevational and geographic migration distances. Differences in migratory behavior were most pronounced for geographic distances, where the majority of native populations had a range of variation that was 2 to 4 times greater than restored or augmented populations. 4. Synthesis and applications. Migrations within native populations include a variety of patterns that translocation efforts have not been able to fully recreate within restored and augmented populations. Theoretical and empirical research has highlighted the benefits of migratory diversity in promoting resilience and population stability. Limited migratory diversity may serve as an additional factor limiting demographic performance and range expansion. We suggest preserving native systems with intact migratory portfolios and a more nuanced approach to restoration and augmentation in which source populations are identified based on a suite of criteria that includes matching migratory patterns of source populations with local landscape attributes.
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