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157 results for “Microtus”
Fig. 4 in Morphometric Differences Among Root Vole (Muridae: Microtus Oeconomus) Populations In Hungary
Fig. 4. Lingual view of the left mandible with landmarks
Fig. 3 in Morphometric Differences Among Root Vole (Muridae: Microtus Oeconomus) Populations In Hungary
Fig. 3. Dorsal view of root vole cranium with landmarks
Fig. 1 in Case of alarm vocalization in a colony of Microtus guentheri (Danford & Alston, 1880) (Mammalia, Rodentia, Arvicolidae) from Southern Bulgaria
Fig. 1. Spectrogram of the alarm whilst of Guenter's vole Microtus guentheri.
Figure 1 in Microtus guentheri (Danford & Alston, 1880) (Rodentia: Cricetidae) as a biomonitor for radionuclides in Mersin Province of Turkey
Figure 1. The localities of samples collected within Mersin Province.
Figure 2 in Comparison of the chromosome banding patterns in three species of social voles (Microtus irani karamani, M. schidlovskii, M. anatolicus) from Turkey
Figure 2. Standard karyotypes of M. irani karamani (1), M. schidlovskii (2), and M. anatolicus (3).
Figure 1 in Intraspecific morphological tooth variability and geographical distribution: Application to the Savi's vole, Microtus (Terricola) savii (Rodentia, Arvicolinae)
Figure 1. Map of Italy with populations by region (see text for names of localities).
Figure 2 in Intraspecific morphological tooth variability and geographical distribution: Application to the Savi's vole, Microtus (Terricola) savii (Rodentia, Arvicolinae)
Figure 2. Morphometry of the first lower molar of Microtus (Terricola).
Microtus californicus toothrow and molar .tps files
<p><b>Aim. </b>This study examines how climate shaped <i>Microtus californicus </i>(Rodentia: Arvicolinae) ecomorphology throughout the Quaternary. It tests three hypotheses: (1) climate corresponds with consistent shape variation in <i>M. californicus </i>dentition; (2) Quaternary warming and drying trends caused <i>M. californicus </i>morphotypes to predictably shift in range through time; (3) Quaternary warming and drying led to predictable changes in tooth morphological variation. Finally, we discuss how shifts in climate-linked morphological variation may affect the potential of <i>M. californicus </i>to react to future climate change.</p> <p><b>Location. </b>Western United States.</p> <p><b>Taxon.</b> <i>Microtus californicus</i> (Peale, 1848)</p> <p><b>Methods. </b>Geometric morphometrics and partial least squares (PLS) analyses were used to discern how climate contributes to consistent variation in the shapes of the <i>M. californicus </i>lower first molar (m1), validated for the full toothrow. We further corroborate this relationship, reconstructing precipitation at fossil localities using m1 morphology and comparing those values to paleoclimate-model-derived precipitations. Disparity analyses and a MANOVA were performed to examine changes in variation and whether a shift in tooth shape occurred through time.</p> <p><b>Results. </b><i>M. californicus </i>m1 and toothrow shapes are narrower and more curved in cooler, wetter climates. Morphology-based paleoclimate reconstructions align with model-based paleoclimate estimations. When time averaging is accounted for, <i>M. californicus</i> demonstrates a 12% reduction in variation from fossil to present-day specimens, and these changes in tooth shape correspond with climate-related morphotypes.</p> <p><b>Main conclusions. </b>As California became drier and hotter since the late Pleistocene, <i>M. californicus </i>dental morphology generally tracked these changes by adapting to the consumption of rougher vegetation in drier environments. This resulted in the loss of some high-precipitation morphotypes, indicating that ecomorphology, often observed at the species and community levels, translates to intraspecific variation and dynamically changes in response to changing climates. The loss of climate-linked morphological variation since the late Pleistocene may limit the ability of <i>M. californicus </i>to respond to future changes in climate. These findings portend that other species may have experienced similar losses in adaptability.</p>
Compositional variation in early life parenting structures alters oxytocin and vasopressin 1a receptor development in prairie voles (Microtus ochrogaster)
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Island biogeography predicts skull gigantism and shape variation in meadow voles (Microtus pennsylvanicus) through ecological release and allometry
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Data from: Assessing the effects of land‑use intensity on small mammal community composition and genetic variation in Myodesglareolus and Microtus arvalis across grassland and forest habitats
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Microtus californicus toothrow and molar .tps files
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Are geometric morphometric analyses replicable? Evaluating landmark measurement error and its impact on extant and fossil Microtus classification
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Konza Prairie site, station Konza Prairie LTER watershed 001d, study of animal abundance of Microtus ochrogaster in units of numberPerTransectLinePer4DayTrapSeason on a yearly timescale
The EcoTrends project was established in 2004 by Dr. Debra Peters (Jornada Basin LTER, USDA-ARS Jornada Experimental Range) and Dr. Ariel Lugo (Luquillo LTER, USDA-FS Luquillo Experimental Forest) to support the collection and analysis of long-term ecological datasets. The project is a large synthesis effort focused on improving the accessibility and use of long-term data. At present, there are ~50 state and federally funded research sites that are participating and contributing to the EcoTrends project, including all 26 Long-Term Ecological Research (LTER) sites and sites funded by the USDA Agriculture Research Service (ARS), USDA Forest Service, US Department of Energy, US Geological Survey (USGS) and numerous universities. Data from the EcoTrends project are available through an exploratory web portal (http://www.ecotrends.info). This web portal enables the continuation of data compilation and accessibility by users through an interactive web application. Ongoing data compilation is updated through both manual and automatic processing as part of the LTER Provenance Aware Synthesis Tracking Architecture (PASTA). The web portal is a collaboration between the Jornada LTER and the LTER Network Office. The following dataset from Konza Prairie (KNZ) contains animal abundance of Microtus ochrogaster measurements in numberPerTransectLinePer4DayTrapSeason units and were aggregated to a yearly timescale.
Konza Prairie site, station Konza Prairie LTER watershed 001d, study of animal abundance of Microtus pinetorum in units of numberPerTransectLinePer4DayTrapSeason on a yearly timescale
The EcoTrends project was established in 2004 by Dr. Debra Peters (Jornada Basin LTER, USDA-ARS Jornada Experimental Range) and Dr. Ariel Lugo (Luquillo LTER, USDA-FS Luquillo Experimental Forest) to support the collection and analysis of long-term ecological datasets. The project is a large synthesis effort focused on improving the accessibility and use of long-term data. At present, there are ~50 state and federally funded research sites that are participating and contributing to the EcoTrends project, including all 26 Long-Term Ecological Research (LTER) sites and sites funded by the USDA Agriculture Research Service (ARS), USDA Forest Service, US Department of Energy, US Geological Survey (USGS) and numerous universities. Data from the EcoTrends project are available through an exploratory web portal (http://www.ecotrends.info). This web portal enables the continuation of data compilation and accessibility by users through an interactive web application. Ongoing data compilation is updated through both manual and automatic processing as part of the LTER Provenance Aware Synthesis Tracking Architecture (PASTA). The web portal is a collaboration between the Jornada LTER and the LTER Network Office. The following dataset from Konza Prairie (KNZ) contains animal abundance of Microtus pinetorum measurements in numberPerTransectLinePer4DayTrapSeason units and were aggregated to a yearly timescale.
Konza Prairie site, station Konza Prairie LTER watershed 004b, study of animal abundance of Microtus ochrogaster in units of numberPerTransectLinePer4DayTrapSeason on a yearly timescale
The EcoTrends project was established in 2004 by Dr. Debra Peters (Jornada Basin LTER, USDA-ARS Jornada Experimental Range) and Dr. Ariel Lugo (Luquillo LTER, USDA-FS Luquillo Experimental Forest) to support the collection and analysis of long-term ecological datasets. The project is a large synthesis effort focused on improving the accessibility and use of long-term data. At present, there are ~50 state and federally funded research sites that are participating and contributing to the EcoTrends project, including all 26 Long-Term Ecological Research (LTER) sites and sites funded by the USDA Agriculture Research Service (ARS), USDA Forest Service, US Department of Energy, US Geological Survey (USGS) and numerous universities. Data from the EcoTrends project are available through an exploratory web portal (http://www.ecotrends.info). This web portal enables the continuation of data compilation and accessibility by users through an interactive web application. Ongoing data compilation is updated through both manual and automatic processing as part of the LTER Provenance Aware Synthesis Tracking Architecture (PASTA). The web portal is a collaboration between the Jornada LTER and the LTER Network Office. The following dataset from Konza Prairie (KNZ) contains animal abundance of Microtus ochrogaster measurements in numberPerTransectLinePer4DayTrapSeason units and were aggregated to a yearly timescale.
Konza Prairie site, station Konza Prairie LTER watershed 004b, study of animal abundance of Microtus pinetorum in units of numberPerTransectLinePer4DayTrapSeason on a yearly timescale
The EcoTrends project was established in 2004 by Dr. Debra Peters (Jornada Basin LTER, USDA-ARS Jornada Experimental Range) and Dr. Ariel Lugo (Luquillo LTER, USDA-FS Luquillo Experimental Forest) to support the collection and analysis of long-term ecological datasets. The project is a large synthesis effort focused on improving the accessibility and use of long-term data. At present, there are ~50 state and federally funded research sites that are participating and contributing to the EcoTrends project, including all 26 Long-Term Ecological Research (LTER) sites and sites funded by the USDA Agriculture Research Service (ARS), USDA Forest Service, US Department of Energy, US Geological Survey (USGS) and numerous universities. Data from the EcoTrends project are available through an exploratory web portal (http://www.ecotrends.info). This web portal enables the continuation of data compilation and accessibility by users through an interactive web application. Ongoing data compilation is updated through both manual and automatic processing as part of the LTER Provenance Aware Synthesis Tracking Architecture (PASTA). The web portal is a collaboration between the Jornada LTER and the LTER Network Office. The following dataset from Konza Prairie (KNZ) contains animal abundance of Microtus pinetorum measurements in numberPerTransectLinePer4DayTrapSeason units and were aggregated to a yearly timescale.
Data from: Structure and dynamics of hybrid zones at multiple stages of speciation in the common vole (Microtus arvalis)
The genetic structure and dynamics of hybrid zones provides crucial information for the understanding of the processes and mechanisms of evolutionary divergence and speciation. In general, higher levels of evolutionary divergence between taxa are more likely to be associated with reproductive isolation and may result in suppressed or strongly restricted hybridization. In this study, we examined the structure and processes in two secondary contact zones between three deep evolutionary lineages in the common vole (Microtus arvalis). Differences in divergence times between the lineages have the potential to shed light on different stages of reproductive isolation and thus provide information on the ongoing speciation process in M. arvalis. We examined more than 800 individuals for mitochondrial (mtDNA), Y-chromosome and autosomal markers, and used assignment and cline analysis methods to characterize the extent and direction of gene flow in the contact zones. Introgression of both autosomal and mtDNA markers in a relatively broad area of admixture indicates selectively neutral hybridization between the least-divergent lineages (Central and Eastern) without evidence for partial reproductive isolation. In contrast, a very narrow area of hybridization, shifts in marker clines and the quasi-absence of Y-chromosome introgression support a moving hybrid zone and unidirectional selection against male hybrids between the lineages with older divergence (Central and Western). Data from a replicate sampling transect provided further support for non-neutral processes in this hybrid zone and suggests additionally a role for the landscape history in the extent of the movement and shaping of gene flow profiles.
FIGURE 15. Eurotaenia gracilis. A. Scolex and neck from Microtus agrestis from Finland. B in Phylogenetic relationships and taxonomic revision of Paranoplocephala Lühe, 1910 sensu lato (Cestoda, Cyclophyllidea, Anoplocephalidae)
FIGURE 15. Eurotaenia gracilis. A. Scolex and neck from Microtus agrestis from Finland. B. Mature proglottid from Dinaromys bogdanovi from Bosnia.
FIGURE 19. Tenoraia janickii from Microtus arvalis from Hungary. A. Scolex and neck. B in Phylogenetic relationships and taxonomic revision of Paranoplocephala Lühe, 1910 sensu lato (Cestoda, Cyclophyllidea, Anoplocephalidae)
FIGURE 19. Tenoraia janickii from Microtus arvalis from Hungary. A. Scolex and neck. B. Mature proglottid (redrawn from Tenora et al. 1985b).
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