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Mastozoología neotropical
versión impresa ISSN 0327-9383versión On-line ISSN 1666-0536
Resumen
GOMEZ VILLAFANE, Isabel E. et al. CONNECTIVITY AMONG NORWAY RAT SUBPOPULATIONS (Rattus norvegicus) AT POULTRY FARMS IN EXALTACIÓN DE LA CRUZ, BUENOS AIRES, ARGENTINAConectividad entre las subpoblaciones de rata noruega (Rattus norvegicus) que habitan granjas avícolas de Exaltación de la Cruz, Buenos Aires, Argentina. Mastozool. neotrop. [online]. 2019, vol.26, n.2, pp.359-367. Epub 17-Jul-2019. ISSN 0327-9383.
Despite of the substantial economic and human health problems produced by rodents of the genus Rattus almost nothing is known about its actual dispersal. In the present study we analyze the genetic subdivision of R. norvegicus inhabiting poultry farms of Buenos Aires, Argentina, and the relation between geographic and genetic distances by means of variation in microsatellite loci. We genotyped 40m rats captured between April-06 and June-07 from nine poultry farms distributed in an area of 110 km2. No genetic subdivision was found among different poultry farms. This result supports the hypothesis of high connectivity between R. norvegicus inhabiting poultry farms in Buenos Aires. Because this species is a known host of diverse zoonosis as leptospirosis and trichinosis, our results point out that there is a great risk of transmission for distances lower than 12 km. Health control and preventive measures should therefore be applied simultaneously in all nearby poultry farms.
Palabras clave : dispersión; metapoblación; microsatélites; movimientos; roedores.