scholarly journals Control of Common Vole (Microtus arvalis) in Alfalfa Crops Using Reduced Content of Anticoagulants

Agronomy ◽  
2021 ◽  
Vol 12 (1) ◽  
pp. 53
Author(s):  
Goran Jokić ◽  
Tanja Blažić

The common vole, Microtus arvalis, which is prone to cyclic overpopulation, poses a significant threat to sustainable alfalfa production by either chewing shoots periodically or gnawing and damaging roots permanently. In areas with established vole colonies, the density of alfalfa plants was shown to decrease 55.3–63.4%. Simultaneously, the number of alfalfa shoots decreased by 60.9–71.7%. These experiments were conducted in compliance with an EPPO standard method in alfalfa fields at three geographically remote sites. The experiment tested the efficacy of the most widely used acute rodenticide zinc phosphide (2%), and anticoagulants applied at significantly reduced doses of active ingredients, i.e., bromadiolone (25 ppm) and brodifacoum (25 ppm), as well as a combination of these active ingredients at a low concentration (10 + 10 ppm). Three weeks after treatment, zinc phosphide and brodifacoum achieved the highest average efficacy, at 98.5% and 92.05%, respectively, while the average efficacy of the anticoagulant combination and bromadiolone was 87.2% and 75.5%, respectively. The achieved efficacy of baits based on brodifacoum and the combination of brodifacoum and bromadiolone in controlling common voles indicates their possible utilization in the field. Baits with 25 ppm of brodifacoum and the combination of bromadiolone and brodifacoum (10 + 10 ppm) showed satisfactory results and their introduction could significantly improve pest management programs for rodent control. At the same time, the use of anticoagulant rodenticides with reduced contents of active ingredients would significantly reduce their exposure to non-target animals, especially predators and vultures. By further improving the palatability of tested baits for target rodent species, their efficacy and safety of application would be significantly improved.

2017 ◽  
Vol 5 (34) ◽  
Author(s):  
Angelina A. Kislichkina ◽  
Aleksandr G. Bogun ◽  
Lidiya A. Kadnikova ◽  
Nadezhda V. Maiskaya ◽  
Viktor I. Solomentsev ◽  
...  

ABSTRACT We here report the draft genome sequences of 8 Yersinia pestis subsp. microtus bv. caucasica strains isolated from the East Caucasian (previous name, Dagestan) mountain focus (no. 39), representing the most ancient branch of the 0.PE2 phylogroup circulating in populations of common voles (Microtus arvalis).


2010 ◽  
Vol 60 (3) ◽  
pp. 566-573 ◽  
Author(s):  
Dana Nováková ◽  
Roman Pantůček ◽  
Zdeněk Hubálek ◽  
Enevold Falsen ◽  
Hans-Jürgen Busse ◽  
...  

Two strains of Gram-positive cocci were isolated from viscera of common voles (Microtus arvalis Pallas) with generalized Brucella microti infection in the Czech Republic. Biochemical features and phylogenetic analysis based on 16S rRNA gene sequences showed that the strains are representatives of the genus Staphylococcus and assigned Staphylococcus muscae as the nearest relative. A detailed characterization done by ribotyping, rpoB and hsp60 gene sequencing, whole-cell protein analysis and rep-PCR using the (GTG)5 primer differentiated the two strains from all described staphylococci. DNA–DNA hybridization with the type strain of S. muscae demonstrated that the two strains should be considered as members of a novel species (26.8 % reassociation). The two analysed strains were found to be coagulase-negative, novobiocin-susceptible, oxidase-negative cultures, phenotypically close to one another, but showing differences in ribotype profiles. The major fatty acids were iso-C15 : 0, iso-C17 : 0, anteiso-C15 : 0, C18 : 2 ω6,9c/anteiso-C18 : 0, C18 : 0 and C18 : 1 ω9c. MK-7 was the predominant isoprenoid quinone, with minor amounts of MK-6 and MK-8. The polar lipid profile was composed of the major lipids diphosphatidylglycerol and phosphatidylglycerol and several unknown lipids. These results proved that the two isolates represent a novel staphylococcal species. The name proposed for this novel taxon is Staphylococcus microti sp. nov.; the type strain is 4005-LJ(m)T (=CCM 4903T =CCUG 55861T =DSM 22147T).


2009 ◽  
Vol 54 (No. 2) ◽  
pp. 64-74 ◽  
Author(s):  
H. Bandouchova ◽  
J. Sedlackova ◽  
M. Hubalek ◽  
M. Pohanka ◽  
L. Peckova ◽  
...  

The purpose of this study was to compare susceptibility of BALB/c mice, common voles (<i>Microtus arvalis</i>) and yellow-necked mice (<i>Apodemus flavicollis</i>) to infection by a virulent <i>Francisella tularensis</i> subsp. <i>holarctica</i> strain. Median survival in these three species following experimental infection with 320 colony forming units of <i>F. tularensis</i> (both intraperitoneally and subcutaneously) amounted to 4.5, 7 and 4 days, respectively. Survival curves of BALB/c and yellow-necked mice were very similar and were significantly different from that of common voles. LD50 was 0.5 and 37.9 colony forming units in BALB/c mice and common voles, respectively. The bacterial burden in the spleen, liver, lung, kidney and blood of common voles started to develop later post exposure and amounted to lower levels (except in kidneys) than in BALB/c mice. The results demonstrate that yellow-necked mice are even more susceptible to infection by <i>F. tularensis</i> than BALB/c mice and that the common vole is a small mammalian host with a susceptibility which is two-orders-of-magnitude lower.


2018 ◽  
Vol 6 (20) ◽  
Author(s):  
XinJun Hu ◽  
Yibing Shang ◽  
Jing Guo ◽  
Huping Zhang ◽  
Yalin Liang ◽  
...  

ABSTRACT Staphylococcus microti DSM 22147 was isolated from viscera of common voles (Microtus arvalis Pallas) with generalized Brucella microti infection in the Czech Republic. To the best of our knowledge, the genome sequence of the species S. microti has not been previously studied. The complete genome sequence of strain DSM 22147 includes a genome of 2,381,859 bp (38.0% GC content) without any plasmids.


1994 ◽  
Vol 72 (2) ◽  
pp. 239-246 ◽  
Author(s):  
B. Koudela ◽  
J. Vítovec

The oocysts of Eimeria strakonicensis n.sp. are described from the feces of the common vole, Microtus arvalis. Sporulated oocysts were broadly ellipsoidal and measured 28.3 × 25.2 μm. The oocyst wall was composed of a yellowish rough outer layer and colourless smooth inner layer. The sporulated oocysts contained a compact blackberry-like residuum. The sporocysts, with a small Stieda body, measured 11.5 × 9.5 μm. Sporulation was completed within 7 days at 20–23 °C. Endogenous development of E. strakonicensis was found to take place in the middle and posterior jejunum. Asexual development comprised two generations of meronts, which were seen at 3 and 4 days postinfection. The first fully developed macrogametes, microgametes, and oocysts were seen at 5 days postinfection. The prepatent period was 5 days and the patent period was 3–4 days. The pathological changes caused by E. strakonicensis consisted of villous atrophy, crypt hyperplasia, and inflammatory infiltration of the lamina propria of the middle and posterior jejunum. During the acute phase, the villous tips were eroded and numerous trophozoites of Spironucleus sp. and Giardia sp. and necrotic debris filled the cryptal and intestinal lumina.


Author(s):  
Victoria Nistreanu

The trophic spectrum of the long-eared owl was studied in two localities of Someshul Mic basin: Cluj-Napoca city and Cojocna village. 2131 pellets were collected: 1403 pellets from Cluj-Napoca Botanical Garden and 728 from Cojocna. 6161 micromammal and bird skulls and bones were separated: 4238 from the pellets collected in Cluj-Napoca and 1923 from those collected in Cojocna. The rodents percent was 84,52% in Cluj-Napoca and 99,12% Cojocna pellets. 4 insectivore species, 12 rodent species and 10 bird species were found in pellets. The most abundant and the dominant species is the common vole (Microtus arvalis) with 64,08% in Cluj-Napoca and with 79,43% in Cojocna. Among birds the most abundant are the house sparrow and the tree sparrow, which constitute almost 70% from all the birds.


2020 ◽  
Vol 21 (5) ◽  
Author(s):  
NADEZHDA Yu. KIRILLOVA ◽  
Alexander Kirillov ◽  
ALEXANDER B. RUCHIN ◽  
MAXIM V. TRUKHACHEV

Abstract. Kirillova NYu, Kirillov AA, Ruchin AB, Trukhachev MV. 2020. Helminth fauna of Microtus cf. arvalis (Rodentia, Cricetidae) in Russia and adjacent countries. Biodiversitas 21: 1961-1979. The helminth fauna of voles of the Microtus cf. arvalis group is reviewed focusing on the Russian fauna and that of adjacent territories. In total, 61 helminth species have been recorded in these rodents: Trematoda-14, Cestoda-21, Nematoda-25, Acanthocephala-1. The diversity of the helminth community of the common vole is due to the wide species range and abundance of this rodent. M. arvalis is the final host for most of the parasites recorded from this host species. Only 10 cestodes and trematodes species use common voles as intermediate and paratenic hosts. The core of this voles’ helminth fauna is formed by common species that parasitize many different rodent species. The helminth fauna of the common vole has been most intensively studied in Russia, where 45 species of parasitic worms have been recorded in rodents. The similarity of the helminth fauna of the common vole from different study regions is determined by both the geographical proximity of the research areas and the broad distribution of most of the M. cf. arvalis helminth species.


2007 ◽  
Vol 101 (4) ◽  
pp. 1161-1164 ◽  
Author(s):  
J. Deter ◽  
J.-F. Cosson ◽  
Y. Chaval ◽  
N. Charbonnel ◽  
S. Morand

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