INVESTIGADORES
SUAREZ Olga Virginia
artículos
Título:
Differences in population parameters of Rattus norvegicus in urban and rural habitats of central Argentina
Autor/es:
GOMEZ VILLAFAÑE M.I.,; CAVIA R; VADELL M.V.,; SUAREZ O.V; BUSCH M., .
Revista:
MAMMALIA
Editorial:
WALTER DE GRUYTER & CO
Referencias:
Lugar: Berlin; Año: 2013
ISSN:
0025-1461
Resumen:
Life history characteristics are influenced by
both biotic and abiotic factors of the environment. The
aim of this study was to compare the life history strategies
of Rattus norvegicus populations in urban and rural habitats
in central-east Argentina. Live trapping of rodents
was conducted over 1 year in a shanty town and for 2 years
on poultry farms. Abundance did not differ between habitats.
Age structure was similar in both habitats but varied
among seasons. Rats on poultry farms had better body
condition, produced larger litters and had a higher reproductive
potential than rats from the shanty town. These
differences may be due to differences in habitat favourability
or in selection pressures between the two habitats.
Our results show that rats may adopt different life history
strategies according to habitat conditions