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157 results for “Microtus”
Figure 5 in Inferring phylogenetic relationships in the common vole (Microtus arvalis) based on mitochondrial and nuclear sequence diversities
Figure 5. Bayesian tree obtained from COXI sequences based on HKY + I parameter (Hasegawa et al., 1985). Numbers on branches show posterior probability (pb) values above 50%.
Figure 4 in Inferring phylogenetic relationships in the common vole (Microtus arvalis) based on mitochondrial and nuclear sequence diversities
Figure 4. Median-joining network obtained from COXI haplotypes of Anatolian, Asian and European populations of M. arvalis. Number of mutations are shown by black lines on the branches.
Figure S3 in Inferring phylogenetic relationships in the common vole (Microtus arvalis) based on mitochondrial and nuclear sequence diversities
Figure S3. ABGD results of IRBP gene region. The histogram shows distribution of genetic distances among M. arvalis samples; yellow columns show mean intralineage distances and red columns show interlineage distances. The diagram implies the lineages according to initial partitions = Group 1 (n: 28): Anatolia, Serbia, Hungary, Iberian Peninsula; Group 2 (n: 1): one sample from Anatolia.
Figure 3 in Inferring phylogenetic relationships in the common vole (Microtus arvalis) based on mitochondrial and nuclear sequence diversities
Figure 3. Bayesian tree obtained from CYTB sequences based on HKY+I+G parameter (Hasegawa et al., 1985). Numbers on branches show posterior probability (pb) values above 50%.
Figure 1. Figure 1 in Inferring phylogenetic relationships in the common vole (Microtus arvalis) based on mitochondrial and nuclear sequence diversities
Figure 1. Figure 1. Location map of AUMAC samples and GenBank Sequences (modified from Yiğit et al. 20161). Black line is the border of arvalis and obscurus forms; dotted lines show possible hybridization zone of the two forms. Western Europe (1: Orkney Island, 2: Spain, 3: France, 4: Belgium), Central Europe (5: Germany, 6: Switzerland, 7: Czech Republic), Eastern Europe (8: Austria, 9: Slovenia, 10: Bosnia, 11: Montenegro, 12: Serbia, 13: Hungary, 14: Poland, 15: Ukraine, 16: European Russia/Vladimir, 17: European Russia/ Arkhangelsk Oblast) groups are 'arvalis' form. Anatolia and its surroundings (18: Anatolia/Ardahan, Kars and Erzurum provinces, 19: Iran, 20: Armenia) and Asia (21: Russia/Orenburg Oblast, 22: Russia/ Chelyabinsk Oblast, 23: China/Xinjiang, 24: Siberia) belong to 'obscurus' form.
Figure 2 in Inbreeding tolerance in two isolated populations of Harting's vole Microtus hartingi (Rodentia, Arvicolinae)
Figure 2. Odour choice between kin vs. nonkin individuals of the opposite sex in Microtus hartingi populations (%), regarding duration of approaches to odour samples in seconds. Females A) and males B) at the age of 35–40 days; females C) and males D) — at the age of 53–58 days.
Figure 1 in Inbreeding tolerance in two isolated populations of Harting's vole Microtus hartingi (Rodentia, Arvicolinae)
Figure 1. Differences in female aggressive behaviour with deadly outcome in polygynous groups in two populations of M. hartingi voles: O-groups (60–70 days of age), Y-groups (49–52 days of age) and control pairs. CAP analogous groups compared to RP; O-groups and Y-groups compared to each other and to control within populations; sisters compared to nonkin in all groups, by Fisher's exact test
Fig. 3 in Microtus cabrerae (Rodentia: Cricetidae)
Fig. 3.—Current known distribution of Microtus cabrerae in Portugal and Spain (each green dot represents occurrence records of the species mapped at a 10- by 10-km resolution), following Fernández-Salvador (2007b) and Mira et al. (2008), updated with records from local studies (e.g., Rosário and Mathias 2007; Garrido-Garcıá et al. 2008, 2013; Ortuño 2009; Pita et al. 2010; and the database from the Conservation Biology Unit, University of Évora). Major rivers (blue lines) and mountain ranges (gray scale) across the Iberian Peninsula also are represented.
Fig. 2 in Microtus cabrerae (Rodentia: Cricetidae)
Fig. 2.—Dorsal, ventral, and lateral views of skull and lateral view of the right mandible of an adult female Microtus cabrerae (Museu Bocage—National Museum of Natural History, Lisbon, Portugal, specimen MB01-001208) collected in Grandola, Portugal (38880N, 88330W) by Inês Rosário on 17 June 2004, donated by Maria da Luz Mathias. Greatest length of skull is 29.8 mm.
Fig. 1 in Microtus cabrerae (Rodentia: Cricetidae)
Fig. 1.—Wild-ranging adult Microtus cabrerae (sex not determined) near Bicos, Odemira, southwestern Portugal (378480N, 88300W), May 2004. Photograph by Joaquim Pedro Ferreira used with permission.
Figure 3 in Intraspecific morphological tooth variability and geographical distribution: Application to the Savi's vole, Microtus (Terricola) savii (Rodentia, Arvicolinae)
Figure 3. Canonical discriminant analysis with the distribution of the centroids on the two first axes of 55 populations from the different regions of Italy.
Figure 4 in Intraspecific morphological tooth variability and geographical distribution: Application to the Savi's vole, Microtus (Terricola) savii (Rodentia, Arvicolinae)
Figure 4. Canonical discriminant analysis with the distribution of the centroids on the two first axes of 11 geographical groups.
Text-fig. 4. Small mammals from Middle Pleistocene site of Yenişarbademli (Central Turkey). a–e – Microtus ex gr. arvalis-socialis: a – m1 and fragmentary m2 sin., EUNHM PV-13210; b – fragmentary m3 sin., EUNHM PV-13211; c – M3 dex., EUNHM PV- 13212a; d, e – fragmentary M3 dex., EUNHM PV-13212b, EUNHM PV-13212c; f – cf. Chionomys nivalis, M3 dex., EUNHM PV-13213; g–j – Lagurus transiens: g, h – fragmentary m1 sin., EUNHM PV-13214-13215; i – m2 sin., EUNHM PV-13216; j – fragmentary M2 dex., EUNHM PV-13217; k – Clethrionomys cf. acrorhiza, fragmentary m3 sin., EUNHM PV-13218 in labial (k2) and lingual (k3) views; l – Ochotona sp., non-pussiloid form, p3 dex., EUNHM PV-13219; m–o – Microtus cf. guentheri: m – fragmentary m1 sin., EUNHM PV-13220; n – m3 sin., EUNHM PV-13221; o – M3 dex., EUNHM PV-13222. Scales for occlusal (larger), and lateral (smaller) views equal 1 mm. in Plio-Pleistocene Amphibians And Reptiles From Central Turkey: New Faunas And Faunal Records With Comments On Their Biochronological Position Based On Small Mammals
Text-fig. 4. Small mammals from Middle Pleistocene site of Yenişarbademli (Central Turkey). a–e – Microtus ex gr. arvalis-socialis: a – m1 and fragmentary m2 sin., EUNHM PV-13210; b – fragmentary m3 sin., EUNHM PV-13211; c – M3 dex., EUNHM PV- 13212a; d, e – fragmentary M3 dex., EUNHM PV-13212b, EUNHM PV-13212c; f – cf. Chionomys nivalis, M3 dex., EUNHM PV-13213; g–j – Lagurus transiens: g, h – fragmentary m1 sin., EUNHM PV-13214-13215; i – m2 sin., EUNHM PV-13216; j – fragmentary M2 dex., EUNHM PV-13217; k – Clethrionomys cf. acrorhiza, fragmentary m3 sin., EUNHM PV-13218 in labial (k2) and lingual (k3) views; l – Ochotona sp., non-pussiloid form, p3 dex., EUNHM PV-13219; m–o – Microtus cf. guentheri: m – fragmentary m1 sin., EUNHM PV-13220; n – m3 sin., EUNHM PV-13221; o – M3 dex., EUNHM PV-13222. Scales for occlusal (larger), and lateral (smaller) views equal 1 mm.
Text-fig. 6. Molars of Microtus from Mikhailovka-5. Microtus ex gr. agrestis LINNAEUS, 1761: a–l: M2, m–s: M3; Microtus (Terricola) ex gr. subterraneus (SELYS-LONGCHAMPS, 1836): t–z: m1, aa–ab: m2, ac–ag: M3. in Late Pleistocene (Eemian) Mollusk And Small Mammal Fauna From Mikhailovka-5 (Kursk Oblast, Central Russia)
Text-fig. 6. Molars of Microtus from Mikhailovka-5. Microtus ex gr. agrestis LINNAEUS, 1761: a–l: M2, m–s: M3; Microtus (Terricola) ex gr. subterraneus (SELYS-LONGCHAMPS, 1836): t–z: m1, aa–ab: m2, ac–ag: M3.
Text-fig. 5. Molars of Microtus ex gr. agrestis LINNAEUS, 1761 from Mikhailovka-5. a–l: m1, m–r: M1. in Late Pleistocene (Eemian) Mollusk And Small Mammal Fauna From Mikhailovka-5 (Kursk Oblast, Central Russia)
Text-fig. 5. Molars of Microtus ex gr. agrestis LINNAEUS, 1761 from Mikhailovka-5. a–l: m1, m–r: M1.
Island biogeography predicts skull gigantism and shape variation in meadow voles (Microtus pennsylvanicus) through ecological release and allometry
Island Rule describes the graded trend of gigantism in small-bodied species to dwarfism in large-bodied species inhabiting islands, but causal explanations remain unresolved. We used geometric morphometrics to quantify cranial morphology of 544 meadow vole (<i>Microtus pennsylvanicus</i>) samples across 11 island and 3 mainland populations from the Outer Lands of New England (Atlantic) and the Alexander Archipelago of Alaska (Pacific). We compared the thermoregulation and endurance (TRE) and ecological release (ER) hypotheses using all-subsets linear models employing residual randomization permutation procedures (rrpp), and Akaike Information Criterion (AIC) for model selection. We decoupled direct and indirect effects of island variables on size using path analysis. We evaluated shape with Principal Components Analysis (PCA) and Procrustes ANOVA on Procrustes shape coordinates, then assessed the impact of static allometry and TRE and ER variables on shape. Six Atlantic island populations exhibit significant signals of gigantism with the largest voles occurring on the smallest islands lacking predators. ER explains 63% of cranial size differences. Island area has a significant total effect on size by influencing the number of mammalian predators, resulting in a 0.011 increase in unit centroid size for a 100 km<sup>2</sup> decrease in island area. This corresponds to a predicted 0.9% change in size for every 100 km<sup>2</sup>. Given static allometry, cranial shape does not respond to insularity independent of size. These results suggest that Island Rule is a latent evolutionary process whose manifestation depends on nuanced biogeographic and ecological contexts that have important conservation and taxonomic implications.
Fig. 2 in Interspecific Interactions as a Factor of Limitation of Geographical Distribution: Evidence Obtained by Modeling Home Ranges of Vole Twin Species Microtus Arvalis – M. Levis (Rodentia, Microtidae)
Fig. 2. Potential distribution of the East European vole (Microtus levis). Captions as in fig.1.
Fig. 9 in Diagnostic Criteria For Identification Of Microtus S. L. Species (Rodentia, Arvicolidae) Of The Ukrainian Carpathians
Fig. 9. Algorithm of diagnostics of Microtus s. l. voles according to dental characters.
Fig. 2 in Diagnostic Criteria For Identification Of Microtus S. L. Species (Rodentia, Arvicolidae) Of The Ukrainian Carpathians
Fig. 2. General view of the skull of Terricola spp. (a–b) and Microtus spp. (c–d).
Fig. 1 in Diagnostic Criteria For Identification Of Microtus S. L. Species (Rodentia, Arvicolidae) Of The Ukrainian Carpathians
Fig. 1. The relation between body length and hindfoot length in M. arvalis and M. agrestis.
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