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Memórias do Instituto Oswaldo Cruz
Fundação Oswaldo Cruz, Fiocruz
ISSN: 1678-8060
EISSN: 1678-8060
Vol. 100, No. 6, 2005, pp. 627-630
Bioline Code: oc05136
Full paper language: English
Document type: Research Article
Document available free of charge

Memórias do Instituto Oswaldo Cruz, Vol. 100, No. 6, 2005, pp. 627-630

 en Maintenance and breeding of Thrichomys (Trouessart, 1880) (Rodentia: Echimyidae) in captivity
Bernardo Rodrigues Teixeira; André Luiz R Roque; Simone Cristina Barreiros-Gómez; Pavel Mikhailovitch Borodin; Ana Maria Jansen & Paulo Sérgio D'Andrea

Abstract

South American histricognath rodents Thrichomys apereoides check for this species in other resources laurentius and Thrichomys pachyurus check for this species in other resources are natural hosts of Trypanosoma cruzi check for this species in other resources , agent of Chagas disease. We established breeding colonies of these species to serve as experimental models in various parasitological studies. Both species of Thrichomys have all the requirements necessary to become excellent laboratory models: they can be easily maintained in the standard laboratory conditions and breed throughout the year and they do not have any special dietary demands and can be fed by standard food pellets designed for laboratory mice. Both species produce precocious offspring that have their eyes and ears open, teeth erupted, fur well developed, and can eat solid food in the first week of life. T. a. laurentius has larger litter sizes and lower body masses at birth and weaning than T. pachyurus. Moreover, females of T. a. laurentius reach puberty earlier and with lower body mass than T. pachyurus.

Keywords
breeding - reproduction - development - Thrichomys

 
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