scholarly journals New colour mutation (ruby) in the Microtus arvalis (Pallas, 1779) and its inheritance

1963 ◽  
Vol 7 ◽  
pp. 321-332 ◽  
Author(s):  
Stanisław Humiński
Keyword(s):  
Microtus Arvalis ◽  
Colour Mutation

IN VITRO DEGRADATION OF MIMOSINE BY MICROORGANISMS FROM THE ESOPHAGEAL SAC OF VOLES (Microtus arvalis)

1986 ◽  
Vol 66 (2) ◽  
pp. 547-551 ◽  
Author(s):  
H. KUDO ◽  
K.-J. CHENG ◽  
W. MAJAK ◽  
J. W. HALL ◽  
T. ARAI ◽  
...  
Keyword(s):  
Pyridine Ring ◽  
Microbial Growth ◽  
Early Stage ◽  
Microtus Arvalis ◽  
In Vitro Degradation ◽  
Ruminal Microorganisms ◽  
Highly Active ◽  
Alfalfa Hay ◽  
Degradation Rates

The microbiota in the esophageal sac of voles fed either cubed alfalfa hay or concentrate pellets were assayed to determine their capacity to anaerobically degrade mimosine in vitro. Differences (P < 0.01) were found between the two diets during the growth phase. The sac contents of voles fed concentrate pellets degraded mimosine and 3-hydroxy-4-(1H)-pyridone (DHP) rapidly, but inocula from voles fed cubed alfalfa hay only hydrolyzed mimosine to DHP. Degradation of the pyridine ring occurred at the early stage of incubation, concurrently with microbial growth. Thereafter, degradation rates appear to have been almost negligible and very similar for both diets. These results agree with previous data obtained with ruminal microorganisms, where highly active inocula were also associated with animals on concentrate diets. Key words: Detoxification, hydrolysis, esophageal sac, mimosine, 3-hydroxy-4- (1H)-pyridone, voles

scholarly journals Lack of detectable genetic isolation in the cyclic rodent Microtus arvalis despite large landscape fragmentation owing to transportation infrastructures

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Julio C. Dominguez ◽  
María Calero-Riestra ◽  
Pedro P. Olea ◽  
Juan E. Malo ◽  
Christopher P. Burridge ◽  
...  
Keyword(s):  
Population Density ◽  
Mixed Models ◽  
Landscape Fragmentation ◽  
Microtus Arvalis ◽  
Density Peaks ◽  
Genetic Patterns ◽  
Large Fluctuations ◽  
Genetic Impact ◽  
Western Spain ◽  
North Western

AbstractAlthough roads are widely seen as dispersal barriers, their genetic consequences for animals that experience large fluctuations in population density are poorly documented. We developed a spatially paired experimental design to assess the genetic impacts of roads on cyclic voles (Microtus arvalis) during a high-density phase in North-Western Spain. We compared genetic patterns from 15 paired plots bisected by three different barrier types, using linear mixed models and computing effect sizes to assess the importance of each type, and the influence of road features like width or the age of the infrastructure. Evidence of effects by roads on genetic diversity and differentiation were lacking. We speculate that the recurrent (each 3–5 generations) episodes of massive dispersal associated with population density peaks can homogenize populations and mitigate the possible genetic impact of landscape fragmentation by roads. This study highlights the importance of developing spatially replicated experimental designs that allow us to consider the large natural spatial variation in genetic parameters. More generally, these results contribute to our understanding of the not well explored effects of habitat fragmentation on dispersal in species showing “boom-bust” dynamics.

Seasonal activity of common vole (Microtus arvalis) in alfalfa fields in southern Hungary

Biologia ◽  
2018 ◽  
Vol 74 (1) ◽  
pp. 91-96 ◽  
Author(s):  
Balázs A. Somogyi ◽  
Győző F. Horváth
Keyword(s):  
Common Vole ◽  
Seasonal Activity ◽  
Microtus Arvalis
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