Circadian locomotor activity and response to different light conditions in the Volcano mouse, Neotomodon alstoni (Merriam, 1898)


Por: Fuentes-Granados, C, Miranda-Anaya, M, Samario-Roman, J, Moreno-Saenz, E, Carmona-Castro, A, Cardenas-Vazquez, RJ

Publicada: 1 ene 2010
Resumen:
The volcano mouse, Neotomodon alstoni, was studied in order to describe basic circadian behavior during free running and entrainment to parametric and non-parametric photoperiods. Responses to short and long days were also tested to ascertain any potential photoperiodic response. This species is endemic to the high grasslands of central Mexico. Its breeding peaks during summer, indicating a possible circannual regulation of reproduction. Our results indicate that locomotor activity in Neotomodon alstoni is typical of a nocturnal rodent when studied using running wheels, however, when activity was observed in freely moving recordings with no running wheel, locomotor activity shifts to a semidiurnal architecture when exposed to long day photoperiods. When gonadal activity was studied in males exposed to short and long days, significant differences were observed in testis size, nevertheless levels of testosterone and seminiferous tubuli indicated that day length does not inhibit sexual ma

Filiaciones:
Fuentes-Granados, C:
 Univ Nacl Autonoma Mexico, Fac Ciencias, Dept Biol Celular, Mexico City 04510, DF, Mexico

Miranda-Anaya, M:
 Univ Nacl Autonoma Mexico, Fac Ciencias, Dept Biol Celular, Mexico City 04510, DF, Mexico

Samario-Roman, J:
 Univ Nacl Autonoma Mexico, Fac Ciencias, Dept Biol Celular, Mexico City 04510, DF, Mexico

Moreno-Saenz, E:
 Univ Nacl Autonoma Mexico, Fac Ciencias, Dept Biol Celular, Mexico City 04510, DF, Mexico

Carmona-Castro, A:
 Univ Nacl Autonoma Mexico, Fac Ciencias, Dept Biol Celular, Mexico City 04510, DF, Mexico

Cardenas-Vazquez, RJ:
 Univ Nacl Autonoma Mexico, Fac Ciencias, Dept Biol Celular, Mexico City 04510, DF, Mexico
ISSN: 09291016





BIOLOGICAL RHYTHM RESEARCH
Editorial
Taylor and Francis Ltd., 4 PARK SQUARE, MILTON PARK, ABINGDON OX14 4RN, OXON, ENGLAND, Reino Unido
Tipo de documento: Article
Volumen: 41 Número: 4
Páginas: 269-278
WOS Id: 000280384700003