 Although reproduction occurs around the year , there is a peak during the summer ( November to April ) . Molting mostly occurs during autumn and winter ( April to August ) . At one locality in Mendoza , Akodon spegazzinii occurs at an estimated density of 21 individuals per hectare ( 8 @.@ 5 per acre ) and has a home range size of about 300 m2 ( 3200 sq ft ) . A number of sigmodontines have been recorded as occurring with A. spegazzinii , including A. caenosus , A. simulator , Neotomys ebriosus , Abrothrix illuteus , Reithrodon auritus , Andinomys edax , and various species of Eligmodontia , Necromys , Calomys , Oligoryzomys , Oxymycterus , and Phyllotis . The tick Ixodes sigelos has been recorded on A. spegazzinii in Tucumán . In addition , the mites Androlaelaps fahrenholzi , Androlaelaps rotundus , and Eulaelaps stabularis and the flea Cleopsylla townsendii are known from the species . 
