Circadian activity rhythm in pre-pubertal and pubertal marmosets (callithrix jacchus) living in family groups
In marmosets, a phase advancewas observed in activity onset in pubertal animals living in captivity under seminatural conditions which had stronger correlation with the times of sunrise over the course of the year than the age of the animal. In order to evaluate the effect of puberty on the circad...
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ri-123456789-247042021-11-09T17:58:33Z Circadian activity rhythm in pre-pubertal and pubertal marmosets (callithrix jacchus) living in family groups Melo, Paula R. Gonçalves, Bruno S. B. Menezes, Alexandre A. L. Azevedo, Carolina V. M. Puberty Ontogenesis Phase delay Sex differences Non-human primates In marmosets, a phase advancewas observed in activity onset in pubertal animals living in captivity under seminatural conditions which had stronger correlation with the times of sunrise over the course of the year than the age of the animal. In order to evaluate the effect of puberty on the circadian activity rhythm in male and female marmosets living in family groups in controlled lighting conditions, the activity of 5 dyads of twins (4 ♀/♂and 1 ♂/♂) and their respective parents was continuously monitored by actiwatches between the 4th and 12th months of age. The families were kept under LD 12:12 h with constant humidity and temperature. The onset of puberty was identified by monitoring fecal steroids. Juveniles showed higher totals of daily activity and differences in the daily distribution of activity in relation to parents, in which the bimodal profile was characterized by higher levels in evening activity in relation to morning activity. Regarding the phase, the activity onset and offset, occurred later in relation to parents. After entering puberty, the activity onset and offset occurred later and there was an increase in total daily activity. On the other hand, when assessing the effect of sex, only females showed a delay in the activity offset and an increase in total daily activity. Therefore, the circadian activity rhythmin marmosets has peculiar characteristics in the juvenile stage in relation to the total of daily activity, the onset and offset of the active phase, and the distribution of activity during this phase. Besides, the entering puberty was associated with a phase delay and increase on total daily activity, with differences between sexes, possibly due to hormonal influences and/or social modulation on rhythm 2018-02-05T19:24:41Z 2018-02-05T19:24:41Z 2016 article MELO, Paula R. et al. Circadian activity rhythm in pre-pubertal and pubertal marmosets (callithrix jacchus) living in family groups. Physiology and Behavior, v. 155, p. 242-249, 2016. Disponível em:<http://www.sciencedirect.com/science/article/pii/S0031938415302201?via%3Dihub>. Acesso em: 20 nov. 2017. 0031-9384 https://repositorio.ufrn.br/jspui/handle/123456789/24704 eng Acesso Aberto application/pdf Elsevier |
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| language |
eng |
| topic |
Puberty Ontogenesis Phase delay Sex differences Non-human primates |
| spellingShingle |
Puberty Ontogenesis Phase delay Sex differences Non-human primates Melo, Paula R. Gonçalves, Bruno S. B. Menezes, Alexandre A. L. Azevedo, Carolina V. M. Circadian activity rhythm in pre-pubertal and pubertal marmosets (callithrix jacchus) living in family groups |
| description |
In marmosets, a phase advancewas observed in activity onset in pubertal animals living in captivity under seminatural
conditions which had stronger correlation with the times of sunrise over the course of the year than the
age of the animal. In order to evaluate the effect of puberty on the circadian activity rhythm in male and female
marmosets living in family groups in controlled lighting conditions, the activity of 5 dyads of twins (4 ♀/♂and 1
♂/♂) and their respective parents was continuously monitored by actiwatches between the 4th and
12th months of age. The families were kept under LD 12:12 h with constant humidity and temperature. The
onset of puberty was identified by monitoring fecal steroids. Juveniles showed higher totals of daily activity
and differences in the daily distribution of activity in relation to parents, in which the bimodal profile was characterized
by higher levels in evening activity in relation to morning activity. Regarding the phase, the activity
onset and offset, occurred later in relation to parents. After entering puberty, the activity onset and offset occurred
later and there was an increase in total daily activity. On the other hand, when assessing the effect of
sex, only females showed a delay in the activity offset and an increase in total daily activity. Therefore, the circadian
activity rhythmin marmosets has peculiar characteristics in the juvenile stage in relation to the total of daily
activity, the onset and offset of the active phase, and the distribution of activity during this phase. Besides, the entering
puberty was associated with a phase delay and increase on total daily activity, with differences between
sexes, possibly due to hormonal influences and/or social modulation on rhythm |
| format |
article |
| author |
Melo, Paula R. Gonçalves, Bruno S. B. Menezes, Alexandre A. L. Azevedo, Carolina V. M. |
| author_facet |
Melo, Paula R. Gonçalves, Bruno S. B. Menezes, Alexandre A. L. Azevedo, Carolina V. M. |
| author_sort |
Melo, Paula R. |
| title |
Circadian activity rhythm in pre-pubertal and pubertal marmosets (callithrix jacchus) living in family groups |
| title_short |
Circadian activity rhythm in pre-pubertal and pubertal marmosets (callithrix jacchus) living in family groups |
| title_full |
Circadian activity rhythm in pre-pubertal and pubertal marmosets (callithrix jacchus) living in family groups |
| title_fullStr |
Circadian activity rhythm in pre-pubertal and pubertal marmosets (callithrix jacchus) living in family groups |
| title_full_unstemmed |
Circadian activity rhythm in pre-pubertal and pubertal marmosets (callithrix jacchus) living in family groups |
| title_sort |
circadian activity rhythm in pre-pubertal and pubertal marmosets (callithrix jacchus) living in family groups |
| publisher |
Elsevier |
| publishDate |
2018 |
| url |
https://repositorio.ufrn.br/jspui/handle/123456789/24704 |
| work_keys_str_mv |
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| _version_ |
1773959962853113856 |