Home range variability,spatial aggregation,and excursions of Akodon azarae and Oligoryzomys flavescens in Pampean agroecosystems  

作　　者：Irene GOROSITO Ailén BENÍTEZ Maria BUSCH 

机构地区：[1]Laboratorio de,Ecología de Poblaciones,Facultad de Ciencias Exactas y Naturales,Universidad de Buenos Aires,and Instituto de Ecología,Genética y Evolución de Buenos Aires,Consejo Nacional de Investigaciones Científicas y Técnicas,Buenos Aires,Argentina [2]Laboratorio de Ecología de Poblaciones,Facultad de Ciencias Exactas y Naturales,Universidad de Buenos Aires,Buenos Aires,Argentina [3]Laboratorio de Ecología de Poblaciones,Facultad de Ciencias Exactas y Naturales,Universidad de Buenos Aires,and Instituto de Ecología,Genética y Evolución de Buenos Aires,Consejo Nacional de Investigaciones Científicas y Técnicas,Buenos Aires,Argentina

出　　处：《Integrative Zoology》2020年第5期401-415,共15页整合动物学（英文版）

基　　金：the University of Buenos Aires for financial support UBACYT 20020170100235BA.

摘　　要：Rodents are reservoirs of various types of hantavirus,some of which are agents of hantavirus pulmonary syndrome in humans.Each hantavirus is associated with a single rodent host species but successive spill-over events may eventually lead to host-switching and new species’becoming host of a given pathogen.This study aims to gain an understanding of the spatial ecology of two hantavirus-host species,Akodon azarae,and Oligoryzomys flavescens,by identifying factors modulating their home range sizes and stability,and by evaluating intra-and interspecific spatial aggregation for these species and a third one—Oxymycterus rufus—living in sympatry.For this,eleven capture-mark-recapture surveys were carried out,spanning 22 months.We found that A.azarae males have larger and more mobile home ranges than females,independently of the season.Consequently,males could likely have a more relevant role in the transmission of hantavirus because of their greater exposure both to a higher number of contacts between individuals and viral contamination of the environment.Contrasting,O.flavescens individuals showed negligible displacements of their home range through time,which could limit the range of hantavirus spread in host populations.Since O.flavescens is host to Lechiguanas hantavirus(pathogenic to humans)this result encompasses epidemiological relevance,for it may imply the existence of local foci of infection.Additionally,individuals of both species performed excursions outside their home ranges.These events could enable hantavirus spread over distances beyond the normal range of movements and lead to new hantavirus outbreaks in formerly non-infected rodent populations,favoring the persistence of the virus in nature.

关 键 词：HANTAVIRUS home range intra-and interspecific contact RODENT spatial ecology 

分 类 号：Q95[生物学—动物学]