Разнообразие пневматизации ушной капсулы у большой песчанки ( Rhombomys opimus , Rodentia, Gerbillinae)

2021 ◽  
Vol 100 (10) ◽  
pp. 1159-1164
Author(s):  
Е. Г. Потапова
Keyword(s):  
2012 ◽  
Vol 27 (4) ◽  
pp. 775-781 ◽  
Author(s):  
Wenxuan Xu ◽  
Wei Liu ◽  
Weikang Yang ◽  
Chaowen Tang ◽  
David Blank

Author(s):  
V. M. Dubyanskii

Using model of plague epizootic process in great gerbils (Rhombomys opimus) settlements, authors showed that plague epizooty could develop at low level of epizootic contact. In this case the size of epizootic site and the number of infected colonies were expected to be insufficient to detect epizooty by standard epizootiologic examination.


2003 ◽  
Vol 9 (4) ◽  
pp. 816-826
Author(s):  
M. R. Yaghoobi Ershadi ◽  
A. A. Akhavan ◽  
A. V. Zahraei Ramazani ◽  
M. R. Abai ◽  
B. Ebrahimi ◽  
...  

An outbreak of cutaneous leishmaniasis [CL] in Sabzevar county prompted this study of the epidemiology and the ecology of vectors and reservoirs. Examination of 541 schoolchildren showed rates of 9.4% for scars and 5.9% for ulcers. Among 807 inhabitants of 4 villages, 10.4% had scars and 3.0% had active lesions. The most highly infected age group was 0-4 years with a rate of 5.9%. A total of 12 849 sandflies representing 7 species were collected in the study area. Leptomonad infection was found in Phlebotomus papatasi, P. caucasicus and Sergentomyia sintoni. Parasites from man, P. papatasi and Rhombomys opimus, were isolated and characterized as Leishmania major. Based on this survey, this is an epidemic of zoonotic CL, with R. opimus the main reservoir host, and P. papatasi the main vector


Author(s):  
Pernille Nilsson ◽  
Mark Ravinet ◽  
Yujun Cui ◽  
Paul Berg ◽  
Yujiang Zhang ◽  
...  

Pathogens may elicit a high selective pressure on hosts and can alter genetic diversity over short evolutionary timescales. Intraspecific variation in immune response can be observed as variable survivability from specific infections. The great gerbil (Rhombomys opimus) is a rodent plague host with a heterogenic but highly resistant phenotype. Here, we investigate if the most plague-resistant phenotypes are linked to genomic differences between survivors and susceptible individuals by exposure of wild-caught great gerbils from Northwest China to plague (Yersinia pestis). Whole genome sequencing of ten survivors and ten moribund individuals revealed a low genome-wide mean divergence, except for a subset of genomic regions that showed elevated differentiation. Gene ontology (GO) analysis of candidate genes within regions of increased differentiation, demonstrated enrichment of pathways involved in transcription and translation and their regulation), as well as genes directly involved in immune functions, cellular metabolism and the regulation of apoptosis. Differential RNA expression analysis revealed that the early activated great gerbil immune response to plague consisted of classical components of the innate immune system. Our approach combining challenge experiments with transcriptomics and population level sequencing, provides new insight into the genetic background of plague-resistance and confirms its complex nature, most likely involving multiple genes and pathways of both the immune system and regulation of basic cellular functions.


2018 ◽  
pp. 127-134 ◽  
Author(s):  
Kourosh Arzamani ◽  
Zeinolabedin Mohammadi ◽  
Mohammad Reza Shirzadi ◽  
Seyed Mohammad Alavinia ◽  
Behruz Jafari ◽  
...  

Background: Rodents are one of the most important hosts for some zoonotic diseases and also act as a reservoir of some ectoparasites and endoparasites. They cause damage to the farms and inflict public health. The aim of this study was to investigate the faunal composition of rodent in North Khorasan Province, Northeast of Iran. Methods: The sampling was carried out between 2011 to 2013. The specimens were collected using different methods including rodent death and live traps, digging of their burrow, and hand net from 75 different sample sites. Results: The total number of 396 specimens belonging to 22 species and six families were identified. The results illustrated the high numbers and densities of Meriones persicus (17.68%), Meriones libycus (15.15%), Nesokia indica (7.32%) and Rhombomys opimus (6.82%), as the most important reservoirs for different zoonotic diseases. Moreover, significant number of other rodent species including Mus musculus (15.66%), Apodemus witherbyi (13.89%), A. hyrcanicus (0.25%), Rattus norvegicus (1.01%), Meriones crassus (0.25%), Gerbillus nanus (0.51%), Microtus paradoxus (2.27%), M. transcaspicus (0.76%), Ellobius fuscocapillus (0.25%), Cricetulus migratorius (4.29%), Calomyscus elburzensis (4.29%), C. mystax (1.26%), Spermophilus fulvus (0.25%), Dryomys nitedula (3.54%), Allactaga elater (3.54%), Jaculus blanfordi (0.25%), Meriones zarudnyi (0.25%), M. meridianus (0.51%), and Hystrix indica as hosts for parasites and zoonotic diseases were identified. Conclusion: The high biodiversity including at least 22 species and six families of rodents were found in North Khorasan Province, some of them were medically important species.


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