Responses of small mammals to habitat fragmentation: epidemiological considerations for rodent-borne hantaviruses in the Americas.
Ecohealth
; 11(4): 526-33, 2014 Dec.
Article
em En
| MEDLINE
| ID: mdl-24845575
Rodent-borne hantaviruses are a group of zoonotic agents that cause hemorrhagic fever in humans. The transmission of hantaviruses among rodent hosts may be higher with the increase of reservoir host abundance in a given area (density-dependent transmission) and with the decrease of small mammal diversity (dilution effect phenomenon). These population and community parameters may be modified by habitat fragmentation; however, studies that focus on fragmentation and its effect on hantavirus infection risk are scarce. To further understanding of this issue, we assessed some population and community responses of rodents that may increase the risk for hantavirus transmission among wildlife hosts in the Americas. We conducted a meta-analysis of published studies to assess the responses of small mammals to fragmentation of native habitats, relative to patch size. Our analyses included five countries and 14 case studies for abundance of reservoir hosts (8 species) and 15 case studies for species richness. We found that a reduction of patch area due to habitat fragmentation is associated with increased reservoir host abundances and decreased small mammal richness, which is mainly due to the loss of non-host small mammals. According to these results, habitat fragmentation in the Americas should be considered as an epidemiological risk factor for hantavirus transmission to humans. These findings are important to assess potential risk of infection when fragmentation of native habitats occurs.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Roedores
/
Reservatórios de Doenças
/
Orthohantavírus
/
Ecossistema
/
Animais Selvagens
Tipo de estudo:
Risk_factors_studies
/
Systematic_reviews
Limite:
Animals
/
Humans
País/Região como assunto:
America do norte
/
America do sul
Idioma:
En
Revista:
Ecohealth
Ano de publicação:
2014
Tipo de documento:
Article
País de publicação:
Estados Unidos